3Controller Area Network Primary purpose is to network vehicle control module using a Standard protocolReduces redundant sensors and or wiring (multiplexing)reducing weight and increasing reliabilityUsing serial data bus to transfer dataAllowing for reliable multiple processor instead of one unreliable large oneCAN is a network protocol used to interconnect a group of electronic control modules also called nodes. A network protocol is the language used to communicate between modules. A two wire twisted pair cable is typically used.SAN is a small area network and is normally called a CAN system.Early less than 10kbps also called CLASS A-Generic UART Universal Asynchronous Receiver/TransmitterOBD II 10k to 125kbps CLASS B Medium speed for J1850 (FORD DCL or SCP and GM class 2)Cans 125kbps 1,000kbps High speed CAN Euro EOBD allow 250 and 500 kbps OBDII allows 500 kbps only.OBD Communications ProtocolsISO (K-Line)ISO (KEY WORD 2000)J Kbps Pulse Width ModulatedJ kbps Variable Pulse WidthJ2284/ISO (CAN)OBD II connector Pin 6 high Pin 14 LowOEM plans to start in 2003, the mandate is to be fully implemented by 2008.
5OBD II Modes MODE 1 MODE 2 MODE 3 Request For Current Power train Diagnostic DataMODE 2Request for Freeze Frame DataMODE 3Request for the Emission Related Trouble CodesMODE 1This request gives us the DataStream PIDS.GM request data in a packet or multiple PID form.All other vehicles the request is for each PID to be displayed.Large PIDS requests will slow down the update rate of the PIDS on the scan tool.Use the minimum amount of PIDS for the diagnostics you are performing.MODE 2Mode 2 requests the Freeze Frame data that was stored when the Code was set. MODE 3This mode requests the Stored Emission Related Trouble Codes.
6OBD II ModesMODE 4Request to Clear/Reset Diagnostic Trouble CodesMODE 5Request Oxygen Sensor Monitoring Test ResultsMODE 4Requests for Clearing codes and all emission related Diagnostic Information.MODE 5Mode 5 requests the test results for Oxygen Sensor Monitors.Switch points and switch time are displayed.Not all scan tools support this MODE, Chrysler does not give test results as they do not support this Mode.This Mode may not be support in CAN vehicles.This information will be moved to MODE 6.
7OBD II Mode 6 and 7 MODE 6 MODE 7 Request for the latest on-board monitoring test results for non-continuous test resultsMODE 7Request for the latest on-board monitoring test results for continuous monitoring systemsMODE 6This mode requests for the latest on-board monitoring test results for non-continuous test results.These monitors are run one time during a drive cycle.Examples are the catalyst, EGR, and EVAP system monitors. The test values and malfunction limits used for the test are displayed and can be used to determine the cause of a pending or failure condition.MODE 7Mode 7 requests for the latest on-board monitoring test results for continuous monitoring systems. Pending Codes give the reports on monitor related problems.These monitors are run on a continuous basis.They are Fuel Trim, Misfires and Comprehensive Component monitors.Pending codes give us an indication of the test results.These codes are independent of MODE 3.
8Mode 8 and 9Mode 8Request control of a On-Board System, Test, or ComponentMode 9Request for Vehicle Identification Number and Calibration IDsMode 8Bi-directional Controls of components in Generic OBD2 mode.This test may allow turning on and Off the EVAP on some vehicles.Mode 9VINComputer Calibrations
10Mode 6 Example EGR Monitor The PCM will compare test from a Hexadecimal chartThe test display will show The Test ID along with the Test Values and Limits.Component ID or CID will show the component being tested or that has failed a test.This vehicle monitors EGR flow by watching the HO2 response to the EGR flow input to the intake manifold.
11EGR MonitorBefore the monitor test begins the following must be completedEngine at operating temperature3 minutes since start upRPM at specified specMAP voltage at specified specTPS at specified specVehicle speed at specified specSTFT at a given minimum levelExample Enabling Conditions before a Monitor runs for a 1996 Dodge 2.4L:Engine temperature above at least 170FEngine time since startup must allow vehicle to be in closed loop over 3 minutesEngine speed must be between RPMMap Voltage should be between Volts indicating a slight load on the engineTPS voltage must be above 0.60v or below 1.80vThe vehicle needs to be above 3 miles per hourSTFT needs to be below 4.5% with vehicle in closed loopThe STFT should shift by more than 7.4% and less than 20% to the rich side.
12EGR Monitor PCM monitors by change in Short Term Fuel Trim During operation of the EGR system the PCM will momentarily shut down the EGR solenoidAs a result EGR flow stops and a lean condition occursHO2S voltage will dropSTFT sees HO2S voltage drop and increases IPWThe PCM monitors STFT and EGR monitor is complete & ReadyThe PCM runs the EGR monitor by doing these functions:EGR Solenoid is turned offO2 Compensation is monitoredWhen the EGR is turned off the air/fuel mixture shifts lean if due to more air flowing in the system.The O2 sensor will indicate a leaner mixture by decreasing the voltage output of the sensor.Short Term fuel trim will shift rich to increase pulse-width of the injector.By monitoring the changes the PCM indirectly monitors the EGR system.Chrysler systems will set a maturing code (Pending Code) along with a Freeze Frame.On the second consecutive trip with a failure the MIL is turned on and a DTC is set along with a Freeze Frame.
13Diagnostics With Mode 6 & 7 Emission Test Failure or Readiness MonitorReadiness StatusFirst checking for pending codesNext review Datastream for errorsPerform Bi-directional test where applicableMake repairsPerform drive cycle to verifySteps for Emission Test Failure or Failed readiness monitor:Check to see if all monitors have runChecking for Pending codes can give an indication of a two trip problem before it runs the second time.DataStream needs to be checked for incorrect sensor inputs or default sensor readingsUse of a Bi-directional test for some items will give an indication of a possible failure.Injector disable tests can help in pin pointing the causes of a Misfire by checking for an RPM loss when the injector is disabled..Correct the problem and rerun the drive cycle or monitor to verify the repair.Checking for pending codes and Mode 6 test results can be a strong indication of a completed repair.
14Diagnostics With Mode 6 & 7 MIL onCheck Diagnostic Trouble CodeNext review Datastream for errorsPerform Bi-directional test where applicableMake repairsPerform drive cycle to verifyVerify Readiness StatusFirst Check for DTC’s and then look up code setting conditions to see how the code was set.Use the Pathfinder for this information.Checking Failure records and DTC status can give the technician an indication if the code is a hard failure or intermittent fault.The DataStream needs to be checked for incorrect sensor inputs or default sensor readings.The use of a Bi-directional test for some items will give an indication of a possible failure.EGR testing can show if the PCM will respond to the EGR flow and if the EGR is functioning correctly.Correct the problem and rerun the drive cycle or monitor to verify the repair.Check to see if the monitor has been completed.
16Data Stream Diagnostics Fuel Trim Data Fuel trim measurements are displayed in many forms as above.Fuel trim is great method of using Datastream to determine if a vehicle passes emissions. It also should be used to determine if fuel control is correct and not out of balance.The PCM use Load, RPM, Temperature and O2 determine what the Injector PW should be.If the Fuel trim is in a Ten percent window plus or minus then it is considered correct on an OBDII vehicle.GM’s older vehicles with Block Learn use 118 to 138 as a good reading.
17Fuel TrimThese are just some of the things that are cause of being out of fuel trim.OBD II O2 monitor may pass yet the vehicle exhibits driveability complaints or fails emissions.Even though the O2 sensor is switching slowly the OBD II monitor only looks at 1.1 times per second as good.The minimum for true catalyst function is 1 time in less than 100ms.So therefore no O2 code does not indicate everything is Ok.
18Fuel TrimThis vehicle has a problem with fuel trim due to a bad O2 sensor on Bank #1.It has learned the correction to the problem and will add so much fuel to one bank to foul the spark plugs.
19IAC Counts High Spec 10 to 30 High IAC counts LTFT over +10 MAP normal .8 to 1.5 IdleCheck ignitionDirty intake valves, Injectors, or Throttle platesLeaking EGRCheck fuel pressure and volumeSpec 10 to 30IAC Counts High over 40LTFT over +10MAP sensor high or MAF sensor low <5Sticking IACDirty intake valves, Injector, or Throttle platesCheck fuel pressure and volumeLow Manifold pressure or compression problemsIAC motor stuck openIAC Counts can indicate a problem with the Idle Air Control too high the throttle may need cleaning.PCV problems can cause a low or high IAC reading depending on the flow through the PCV.Low IAC counts less than 6 may indicate a vacuum leak.Ford uses percentage instead but the readings indicate the same.Normal readings are 10 to 40%, 20 to 35% preferred.
20Temperature SensorsThe temperature sensor is one of the primary sensors on the vehicle. This sets the timing control and fuel controls on the vehicle when combined with other sensor input.Coolant temperatureThe coolant temperature should read within 10 degrees F of the outside air on a cold start.Typical readings of a hot running engine are from 185 to 195 degrees F.Air TemperatureThe Air Temperature sensor is used on some vehicles as a fine tune device for timing and Air Fuel Ratio. This sensor is used on some vehicles as a check for EGR flow.EGR Temperature SensorThe temp sensor for EGR will determine EGR flow by monitoring the temperature of the exhaust gases being introduced into the intake manifold.
21TPS Low Voltage Code 1) KOEO 2) Closed Throttle Wiggle throttle shaft If voltage varies a few tenths of a voltThrottle body is wornIf not verify 5 volt reference and groundIf you get a low voltage code for a TPS, check the throttle shaft by wiggling it.Check with a scan tool or DVM hooked to the signal wire.If the shaft is not worn check the VREF at the sensor, it should be between 4.9 to 5.1 volts with a DVOM.The DVOM readings may not match exactly the scan tool readings due to data allocation tables.Check the ground wire it should read under .050mV with the Red Lead to the ground terminal of the TPS and Black lead to a good ground.
22TPS Quick Specs GM Port Fuel Injection Ford .8 to 1 volt Chrysler GM Throttle Body Injection.55 to .75 volts=0% closedCold / WarmGM Port Fuel Injection.29 to .58 volts=0% closed cold.4 to .58 volts closed=0% warm idle runningFord.8 to 1 voltWide Open Throttle 4.3 minimumChrysler.6 to 1.1 voltsWide Open Throttle 2.6 volts above stored minimum TPSTypical Readings that are used to check for a base TPS setting.It also checks for Wide open throttle corrections and clear flood mode.
23GM MAP Sensors Vacuum Voltage Scan Data 0” 4.5-4.7 V 29-30” 3” 26-27”6”V23-24”9”V20-21”12”V17-18”15”V14-15”18”V11-12”21”V8-9”Verify correct MAP readings by using a vacuum gauge on a good manifold vacuum port/Source.The vacuum on the gauge should read within one inch of the Scan Tool readings.Idle readings are typically.9 to 1.5 Volts8-12”
24GM/Chrysler BARO Readings AltitudeBaro PressureVoltage0-1000’29-30”V1000 to 2000’28-29V2000 to 3000’27-28”V3000 to 4000’26-27”V4000 to 5000’25-26”VCheck for correct Barometer readings to see the PCM control of timing and fuel based on altitude.
25Chrysler MAP Vacuum Voltage Scan Data 0” 4.5-4.8 V 29-30” 3” 4.0-4.2 V 26-27”6”V23-24”9”V20-21”12”V17-18”15”V14-15”18”V11-12”21”V8-9”Later Chryslers will display a Vacuum reading, match it to a vacuum gauge.Early models subtract idle map readings in inches from the Barometer reading and compare to the Vacuum gauge.
26Ford MAP Sensors Vacuum Frequency in HZ 0” 159 Hz 3” 150 Hz 6” 141 Hz 9”132 Hz12”123 Hz15”114 Hz18”105 Hz21”96 HzFord MAP sensors output a HZ reading compare to a vacuum gauge.Apply three inches of vacuum at a time to check for a 9 Hz change.Make sure the sensor holds vacuum.
27FORD BARO Readings Altitude Vs. Frequency 0-1000’ 29-30” 159-163 Hz ’28-29”Hz’27-28”Hz’26-27”Hz’25-26”HzBarometer readings set the timing and fuel control tables to be used.
28MAP High Voltage Code 1) KOER 2) Measure Engine Vacuum at idle Vacuum should be at spec approximate 18 in hgIf low verifyCam to crank timingVacuum leakEnriched fuel condition causeKOER at idle the Vacuum should run 15 to 21 inches early vehicles with later models 18 to 21”.Voltage should be checked at the MAP sensor under idle no load conditions. The readings should run from about 1.0 volts to 1.5 volts on a good engine.This code will set if it sees a voltage above 3.5 volts on some GM vehicles during low load conditions.If readings are correct at the proper Vacuum sweep the Map sensor for Glitch or spike in the voltage output.If the readings are high indicates to check for Mechanical problems.
29Cylinder Misfire Testing GM displays the Misfire in a history and current output display.This vehicle shows a misfire on bank #1, due to an O2 problems.
30Catalyst Efficiency Monitor Pre-HO2S Post-HO2S Upstream HO2S Downstream HO2S S1 S2 800 mv450 mv200 mvThese are examples of good pre and post cat o2 sensor outputs from the HO2s.470 mv450 mv430 mv
31GM CODES Malfunction Indicator Light Codes Hard codes History Codes Failure Since ClearFailure recordsPending codesFreeze frameMIL codes what code has turned on the light.Hard Codes Stored failure codes that are happening now.History codes are those that are intermittent in nature or occurred in the past.Failure Since Clear codes that have come back since being cleared.Failure records are mini freeze frames of the data used when a code was setPending codes are two trip codes that have a one trip failureFreeze frame OBD2 code data set at or near time of a code setting condition.
32Chrysler Switch Tests OBD2 Enable/Disable Tests Idle Air Control Tests Actuator Test ModeDrive CycleSwitch checks to see if the PCM can sense the opening and closing of the main switch inputs.Enable tests allow turning off and on components to check for proper response.Idle air checks for the AIS control of the Idle.ATM tests for proper coarse control of a device by the PCM.
33FORD Tests Output State Tests Cylinder Balance Test Ford OBD2 Output ControlsHi speed Fan OnLow Speed Fan OnAll Outputs OnDrive CycleOutput state test turns components on and off by depressing the throttle.You can check to see if they hold and release vacuum, or the amperage draw of each component.Cylinder Balance test checks for Injector flow by turning off injectors and watching for a proper RPM drop.
34GM OBD2 Bi-Directional Controls Crankshaft RelearnEVAP/EGR ControlsCanister Purge SolenoidCanister Vent SolenoidEGR ControlEVAP ServiceFuel System ControlsFuel Pump RelayInjector DisableFuel Closed LoopFuel Trim ResetIndividual control of each item to check for correct response or to relearn the computer functions.
36SCAN Is the scan tool giving good information? Does the sensor data match what the voltmeter or lab scope displays?Will the bi-directional confirm a problem?Does the command that the computer uses make sense?Always check grounds with a DVOM because of sensor data allocation data.Always check Voltage reference supply to sensors.Do sensors move in reaction to others?
38GENERAL MOTORS A/C REFRIGERENT STEP 1 COLD START ECT LESS THAN 5O DEGREES C, WITH A/C AND REAR DEFROST ON, IDLE 2.5 MINUTES IN DRIVE. BEFORE PROCEEDING TURN ACCESSORIES OFFSTEP 2ACCELERATE TO 55 MPH, 1/2 THROTTLE, A/C OFFSTEP 33 MININUTE STEADY STATE CRUISE 55 AND 60 MPHSTEP 4DECELERATE TO 20 MPH (CLUTCH OUT) NO BRAKESTEP 5ACCELERATE AT 3/4 THROTTLE 55 TO 60 MPH, THEN STEADY STATE CRUISE FOR 5 MINUTESSTEP 6DECELERATE NO BRAKE, END OF CYCLE
39GENERAL MOTORS AIR SYSTEM STEP 1 STEP 2 COLD START LESS THAN 50 DEGREES C, WITH A/C AND REAR DEFROST ON, IDLE 2.5 MINUTES IN DRIVE. BEFORE PROCEEDING TURN ACCESSORIES OFFSTEP 23 MINUTE STEADY STATE CRUISE 55 AND 60 MPH
40GENERAL MOTORS CATALYST MONITOR STEP 1 VERIFY ALL OTHER IM FLAGS SET FIRSTSTEP 2ACCELERATE AT 3/4 THROTTLE TO 55 TO 60 MPH, THEN STEADY CRUISE FOR 5 MINUTES
41GENERAL MOTORS COMPREHENSIVE COMPONENTS STEP 1 COLD START ECT LESS THAN 50 DEGREES C, WITH A/C AND REAR DEFROST ON, IDLE FOR 2.5 MINUTES IN DRIVE. BEFORE PROCEEDING TURN ACCESSORIES OFFSTEP 2ACCELERATE TO 55 MPH, 1/2 THROTTLE, A/C OFFSTEP 33 MINUTES, STEADY STATE CRUISE 55 AND 60 MPHSTEP 4DECELERATE TO 20 MPH (CLUTCH OUT) NO BRAKESTEP 5ACCELERATE AT 3/4 THROTTLE TO 55 TO 60 MPH, THEN STEADY STATE CRUISE FOR 5 MINUTESSTEP 6DECELERATE NO BRAKE, END OF CYCLE
42GENERAL MOTORS EGR SYSTEM STEP 1 3 MINUTE, STEADY STATE CRUISE 55 AND 60 MPHDECELERATE (CLUTCH OUT) NO BRAKE TO LESS THAN 20 MPH
43GENERAL MOTORS EVAP SYSTEM STEP 1 VERIFY BOTH O2 AND CATALYST MONITORS HAVE COMPLETEDSTEP 2IAT WITHIN 7 DEGREES OF ECTSTEP 3COLD START ECT LESS THAN 50 DEGREES C, WITH A/C AND REAR DEFROST ON. IDLE 2.5 MINUTES IN DRIVE. BEFORE PROCEEDING TURN ACCESSORIES OFFSTEP 4ACCELERATE TO 55 MPH, 1/2 THROTTLE, A/C OFFSTEP 53 MINUTE, STEADY STATE CRUISE 55 AND 60 MPHSTEP 6DECELERATE TO 20 MPH (CLUTCH OUT) NO BRAKESTEP 7ACCELERATE AT 3/4 THROTTLE TO 55 TO 60 MPH, THEN STEADY STATE CRUISE FOR 5 MINUTESSTEP 8DECELERATE NO BRAKE, END OF CYCLE
44GENERAL MOTORS FUEL SYSTEM STEP 1 ACCELERATE TO 55 TO 60 MPH, 1/2 TO 3/4 THROTTLE, A/C OFFSTEP 2ACCELERATE AT 3/4 THROTTLE TO 55 TO 60 MPH, THEN STEADY STATE CRUISE FOR 5 MINUTES
45GENERAL MOTORS FULL DRIVE CYCLE STEP 1 COLD START ECT LESS THAN 50 DEGREES C, WITH A/C AND REAR DEFROST ON, IDLE 2.5 MINUTES IN DRIVE. BEFORE PROCEEDING TURN ACCESSORIES OFFSTEP 2ACCELERATE TO 55 MPH, 1/2 THROTTLE, A/C OFFSTEP 33 MINUTE, STEADY STATE CRUISE 55 AND 60 MPHSTEP 4DECELERATE TO 20 MPH (CLUTCH OUT) NO BRAKESTEP 5ACCELERATE AT 3/4 THROTTLE TO 55 TO 60 MPH, THEN STEADY CRUISE FOR 5 MINUTESSTEP 6DECELERATE NO BRAKE, END OF CYCLE
46GENERAL MOTORS MISFIRE MONITOR STEP 1 ACCELERATE AT 3/4 THROTTLE TO 55 TO 60 MPH, THEN STEADY STATE CRUISE FOR 5 MINUTES
47GENERAL MOTORS O2 SENSOR STEP 1 STEP 2 COLD START ECT LESS THAN 50 DEGREES C, WITH A/C AND REAR DEFROST ON, IDLE 2.5 MINUTES IN DRIVE. BEFORE PROCEEDING TURN ACCESSORIES OFFSTEP 23 MINUTE, STEADY STATE CRUISE 55 AND 60 MPH
48GENERAL MOTORS O2 SENSOR HEATER STEP 1 STEP 2 COLD START ECT LESS THAN 50 DEGREES C, WITH A/C AND REAR DEFROST ON, IDLE 2.5 MINUTES IN DRIVE. BEFORE PROCEEDING TURN ACCESSORIES OFFSTEP 23 MINUTES, STEADY STATE CRUISE 55 AND 60 MPH
50CHRYSLER CARS AIR SYSTEM STEP 1 ENGINE WARM-UP REQUIRED, LEAVE ENGINE RUNNING 15 MINUTESSTEP 2ENGINE AT IDLE SPEED
51CHRYSLER CARS CATALYST MONITOR STEP 1 STEP 2 STEP 3 VERIFY ALL OTHER IM FLAGS SET FIRSTSTEP 2COMPLETE ENGINE WARM-UP CYCLE 6 MINUTESSTEP 3ENGINE AT STEADY THROTTLE OVER 20 MPH FOR 2 MINUTES AND 20 SECONDS
52CHRYSLER CARS EGR SYSTEM STEP 1 COMPLETE AN ENGINE WARM UP CYCLE 6 MINUTESSTEP 2STEADY THROTTLE OVER 40 TO 60 MPH FOR 6 TO 8 MINUTES
53CHRYSLER CARS EVAP SYSTEM STEP 1 VEHICLE WITH LEAK DETECTION PUMP SYSTEMSTEP 2TEST RUNS IMMEDIATELY AFTER COLD ENGINE STARTUP, WHILE ENGINE SPEED CONTROLLED BY COLD ENGINE SPEED STRATEGY. TOTAL TEST TIME 3 TO 4 MINUTES (LEAK TEST)STEP 3RUN ENGINE AT IDLE SPEED FOR 3 MINUTES AFTER WARM-UP (FLOW TEST)VEHICLE WITHOUT LEAK DETECTION PUMPCOMPLETE AN ENGINE WARM-UP CYCLE 6 MINUTESRUN ENGINE AT STEADY THROTTLE WITH VEHICLE SPEED OVER 28 TO 48 MPH FOR 1 MINUTE
54CHRYSLER CARS FUEL SYSTEM STEP 1 COMPLETE AN ENGINE WARM-UP CYCLE 6 MINUTESSTEP 2RUN ENGINE AT IDLE OR AT CRUISING SPEED
55CHRYSLER CARS FULL DRIVE CYCLE STEP 1 WARM ENGINE UP IN CLOSED LOOP FOR 5 MINUTESSTEP 2ENGINE AT STEADY THROTTLE FOR 40 TO 60 MPH FOR 6 TO 8 MINUTESSTEP 3RETURN VEHICLE TO IDLE FOR 3 MINUTESSTEP 4TURN KEY OFF, PCM RUNS TEST WITHIN 3 MINUTES AFTER KEY IS OFFSTEP 5START VEHICLE AND ACCELERATE TO A SPEED GREATER THAN 20 MPH AND DRIVE AT STEADY THROTTLE FOR 2 MINUTES AND 20 SECONDS
56CHRYSLER CARS MISFIRE MONITOR STEP 1 COMPLETE AN ENGINE WARM-UP CYCLE 6 MINUTESSTEP 2RUN ENGINE AT IDLE OR AT CRUISING SPEED
57CHRYSLER CARS O2 SENSOR STEP 1 COMPLETE AN ENGINE WARM-UP CYCLE 6 MINUTESSTEP 2RUN ENGINE AT OVER 24 MPH, THEN RETURN TO IDLE TO START THE TEST
58CHRYSLER CARS O2 SENSOR HEATER STEP 1 RUN ENGINE FOR GREATER THAN 5.5 MINUTE PRIOR TO STARTING THE TESTSTEP 2TURN KEY OFF, PCM RUNS TEST 3 MINUTES AFTER KEY OFF
60CHRYSLER TRUCK FULL DRIVE CYCLE STEP 1 START ENGINE UP COLD AND WARM ENGINE UP IN CLOSED LOOP FOR 5 MINUTESSTEP 2ENGINE AT STEADY THROTTLE FOR 40 TO 60 MPH FOR 6 TO 8 MINUTESSTEP 3RETURN VEHICLE TO IDLE FOR 3 MINUTESSTEP 4ACCELERATE TO A SPEED GREATER THAN 20 MPH AND DRIVE AT STEADY THROTTLE FOR 2 MINUTES AND 20 SECONDS
61CHRYSLER TRUCK O2 SENSOR HEATER STEP 1 BEGINS RIGHT AFTER COLD START UPSTEP 2TEST BEGINS AT START UP AND CAN LAST 1 MINUTE
63FORDAIR SYSTEMSTEP 1IAT BETWEEN 40 AND 100 DEGREES F AND ECT GREATER THAN 130 DEGREES FSTEP 2VERIFY O2S MONITOR IS COMPLETESTEP 3DRIVE IN STOP AND GO TRAFFIC FOR 20 MINUTES WITH 4 IDLE PERIODSSTEP 4THEN DRIVE AT 45 MPH (+ OR - 5 MPH) FOR 10 MINUTES ( WATCH FOR EVAP COMPLETION), IF NOT DONE DRIVE FOR 2 TO 5 MINUTES MORE
64FORD CATALYST MONITOR STEP 1 IAT BETWEEN 40 AND 100 DEGREES F AND ECT GREATER THAN 130 DEGREES FSTEP 2MONITOR TO VERIFY CATALYST MONITOR COMPLETESSTEP 3START ENGINE AND DRIVE VEHICLE FOR 20 TO 25 MINUTES IN STOP AND GO TRAFFIC IN CLOSED LOOP WITH 6 DIFFERENT STEADY SPEEDS 25 TO 40 MPHSTEP 4THEN DRIVE ON HIGHWAY FOR 10 TO 15 MINUTES WITH NO QUICK ACCELERATION, DECELERATION OR WIDE OPEN THROTTLE EVENTS
65FORD COMPREHENSIVE COMPONENT STEP 1 IAT BETWEEN 40 AND 100 DEGREES F AND ECT GREATER THAN 130 DEGREES FSTEP 2PERFORM COMPLETE DRIVE CYCLE UNTIL DTC P1000 IS CLEAREDSTEP 3DRIVE IN STOP AND GO TRAFFIC FOR 20 MINUTES WITH 4 IDLE PERIODSSTEP 4DRIVE ON HIGHWAY FOR 10 TO 15 MINUTES WITH NO QUICK ACCELERATION, DECELERATION OR WIDE OPEN THROTTLE EVENTS
66FORD EGR SYSTEM STEP 1 STEP 2 STEP 3 STEP 4 IAT BETWEEN 40 AND 100 DEGREES F AND ECT GREATER THAN 130 DEGREES FSTEP 2MONITOR TO VERIFY EGR MONITOR COMPLETESSTEP 3START ENGINE AND DRIVE VEHICLE FOR 5 TO 6 MINUTES IN STOP AND GO TRAFFIC IN CLOSED LOOP WITH GREATER THAN 2 IDLE PERIODSSTEP 4THEN ACCELERATE TO OVER 35 MPH AT OVER 1/2 THROTTLE AND HOLD THAT SPEED FOR GREATER THAN 1 MINUTE
67FORD EVAP SYSTEM STEP 1 STEP 2 STEP 3 STEP 4 IAT BETWEEN 40 TO 100 DEGREES F AND ECT GREATER THAN 130 DEGREES FSTEP 2MONITOR TO VERIFY EVAP MONITOR COMPLETESSTEP 3VERIFY FUEL LEVEL IS FROM 1/4 TO 3/4 FULL, THEN START ENGINE AND DRIVE ON HIGHWAY FOR 2 MINUTES WITHOUT ANY RAPID ACCELERATION OR DECELERATIONSTEP 4THEN DECELERATE, STOP VEHICLE AND TURN OFF ENGINE FOR 5 SECONDS
68FORDFUEL SYSTEMSTEP 1IAT BETWEEN 40 AND 100 DEGREES F AND ECT GREATER THAN 130 DEGREES FSTEP 2MONITOR TO VERIFY FUEL MONITOR COMPLETESSTEP 3START ENGINE AND DRIVE VEHICLE FOR 6 TO 7 MINUTES IN STOP AND GO TRAFFIC IN CLOSED LOOP WITH GREATER THAN 1 IDLE PERIODSTEP 4THEN ACCEL TO OVER 35 MPH AT OVER 1/2 THROTTLE AND HOLD THAT SPEED GREATER THAN 1 MINUTE
69FORD FULL DRIVE CYCLE STEP 1 DRIVE IN STOP AND GO TRAFFIC FOR 20 MINUTES WITH 4 IDLE PERIODSSTEP 2DRIVE ON HIGHWAY FOR 10 TO 15 MINUTES WITH NO QUICK ACCELERATION, DECELERATION OR WIDE OPEN THROTTLE EVENTSSTEP 3DECEL AND RETURN TO IDLE, TURN THE KEY OFF
70FORD MISFIRE MONITOR STEP 1 STEP 2 STEP 3 MONITOR TO VERIFY MISFIRE MONITOR COMPLETESSTEP 2START AND DRIVE THE VEHICLE TO A LOCATION WHERE SPEEDS CAN REACH 65 TO 66 MPH AND COAST DOWN TO 35 MPH WITHOUT BRAKING OR CLOSED LOOP OPERATIONSTEP 3ACCELERATE ON A HIGHWAY TO 80 MPH AND HOLD THAT SPEED FOR 30 SECONDS, THEN COAST DOWN WITH FOOT OFF THE ACCELERATOR TO 35 MPH. DO ACCELERATION AND DECELERATION CYCLE 3 CONSECUTIVE TINES
71FORDO2 SENSORSTEP 1IAT BETWEEN 40 AND 100 DEGREES F AND ECT GREATER THAN 130 DEGREES FSTEP 2VERIFY O2S MONITOR COMPLETESSTEP 3START ENGINE AND DRIVE VEHICLE FOR 6 TO 7 MINUTES IN STOP AND GO TRAFFIC IN CLOSED LOOP WITH GREATER THAN 1 IDLE PERIODSTEP 4THEN ACCELERATE OVER 35 MPH AT OVER 1/2 THROTTLE AND HOLD THAT SPEED FOR GREATER THAN 1 MINUTE
72FORD O2 SENSOR HEATER STEP 1 IAT BETWEEN 40 AND 100 DEGREES F AND ECT GREATER THAN 130 DEGREES FSTEP 2VERIFY O2S MONITOR COMPLETESSTEP 3START ENGINE AND DRIVE VEHICLE 6 TO 7 MINUTES IN STOP AND GO TRAFFIC IN CLOSED LOOP WITH GREATER THAN 1 IDLE PERIODSTEP 4THEN ACCELERATE TO OVER 35 MPH AT OVER 1/2 THROTTLE AND HOLD THAT SPEED FOR GREATER THAN 1 MINUTE
74GENERIC ENGINE AT OPERATING TEMPERATURE START ENGINE IDLE IN NEUTRAL 4 MIDLE IN DRIVE 40 SACCELERATE TO 40 MPH AT 1/4 TO 1/2 THROTTLE 10SDRIVE STEADY THROTTLE 45 MPH 30SIDLE IN DRIVE 40SDRIVE IN CITY TRAFFIC 25 TO 40 MPH 15M INCLUDE5 STOPS TO AN IDLE 10S EACHACCELERATE FROM IDLE TO 1/4 TO 1/2 THROTTLE3 SEPARATE SPEED STEADY THROTTLE AT 90SACCELERATE TO 45 TO 60 MPH FOR 5MDRIVE AT STEADY THROTTLE AT 45 TO 60 MPH FOR 5MDRIVE AT VARYING SPEEDS FOR 5M BETWEEN 45 TO 60