Engine Controls - Self-Diagnostics - 3.5L: Other Oldsmobile Aurora II

Code Types

Diagnostic Trouble Codes (DTC) are categorized by type. The DTC type relates to how the Malfunction Indicator Light (MIL) operates and how the fault data is stored when a particular DTC fails. In some cases there may be exceptions to this structure. The following list describes the general characteristics of the 3 different types of DTC categories

1. Type "A" This type DTC is an emission related DTC. The PCM will illuminate the MIL the first time a failure occurs and will store a DTC in memory. The PCM will capture freeze frame/failure records data.
2. Type "B" This type DTC is an emissions related DTC. The first time a failure occurs, the PCM will not illuminate the MIL. The PCM will store a DTC in memory (as last test failed). The PCM will capture freeze frame/failure records data. If the failure occurs a second time within 2 consecutive drive cycles, the PCM will illuminate the MIL. The PCM will store the DTC in memory (DTC will now appear in history) and capture freeze frame/failure records data. If the failure occurs a second time but not within 2 consecutive drive cycles, the PCM will not illuminate the MIL. PCM will store the DTC in memory (as failed last test) and update failure records data only.
3. Type "C" This type DTC is a non-emissions related DTC. The PCM will not illuminate the MIL. The PCM will store the DTC in memory and capture failure records data. Some DTCs may also illuminate an auxiliary service light, and/or cause a message to be displayed on the driver information center depending on how the vehicle is equipped. The light/message request occurs at the time of the first failure.

Freeze Frame

Government regulations require that engine operating conditions be captured whenever the Malfunction Indicator Light (MIL) is illuminated. The data captured is called freeze frame data. The freeze frame data is very similar to a single record of operating conditions. Whenever the MIL is illuminated, the corresponding record of operating conditions is recorded as freeze frame data. A subsequent failure will not update the recorded information. Freeze frame data can only be overwritten with data associated with a misfire or fuel trim malfunction. Data from these faults take precedence over data associated with any other fault. The freeze frame data will not be erased unless the associated history DTC is cleared. The freeze frame data parameters stored with a DTC failure include the following.

1. Air/Fuel Ratio
2. Mass Airflow Sensor
3. Fuel Trim (Both Short Term And Long Term For Both Cylinder Banks)
4. Engine Speed
5. Intake Air Temperature
6. Engine Coolant Temperature
7. Vehicle Speed
8. Throttle Position Angle
9. Manifold Absolute Pressure/Barometric Pressure
10. Fuel System Status

Failure Records

When a diagnostic test fails, the Powertrain Control Module (PCM) stores the information as failure records data. Unlike freeze frame data, failure records are stored for multiple Diagnostic Trouble Codes (DTC) or non-emission related DTCs (DTCs that do not illuminate the MIL). The failure records information is updated the first time the test fails during each ignition cycle. Freeze frame/failure records data may be retrieved by using a scan tool. If more than one DTC is set, review the odometer or engine run time data located in the freeze frame/failure records info to determine the most current failure. The stored information will look like normal PCM data. Always capture freeze frame/failure records data information with the scan tool before proceeding with any diagnosis. Loss of this data may prevent accurate diagnosis of an intermittent condition.

POWERTRAIN CONTROL MODULE

After replacing Powertrain Control Module (PCM) or if program needs to be updated, refer to latest Techline information on PCM reprogramming. PCM can only be programmed using Tech 2 and Techline terminal, or by using a personal computer equipped with the current service programming system software installed. After reprogramming, perform INSPECTION/MAINTENANCE PROCEDURES , CRANKSHAFT POSITION SENSOR SYSTEM VARIATION LEARN PROCEDURE , OIL LIFE INDEX RESET , IDLE LEARN PROCEDURE and PROGRAMMING THEFT DETERRENT SYSTEM COMPONENTS

CRANKSHAFT POSITION SENSOR SYSTEM VARIATION LEARN PROCEDURE

Battery must be fully charged and in good condition. Scan tool connection at Data Link Connector (DLC) should be clean and tight before starting crankshaft position system variation learn procedure.

1. Close hood. Block drive wheels and set vehicle parking brake. Turn all accessories off. Start engine. Ensure engine is at least 158°F (70°C). Turn ignition off. Using scan tool, select and enable CRANKSHAFT POSITION SYSTEM VARIATION LEARNING PROCEDURE. Start engine.
2. Ensure transaxle is Park. Press and hold brake pedal firmly. Increase engine speed until fuel cutoff is reached at 5150 RPM. Immediately release accelerator pedal after fuel cutoff is reached. The crankshaft position system variation compensating values are learned when the RPM decreases back to idle. Monitor status for DTC P1336.
3. If scan tool indicates DTC P1336 ran and passed, crankshaft position system variation learn procedure is complete. If scan tool indicates DTC P1336 failed or did not run, check for additional DTCs and repair as necessary. See «DIAGNOSTIC TROUBLE CODE DEFINITIONS»(ref-126121-S19628632112001102400000) . If only DTC P1336 is set, repeat crankshaft position system variation learn procedure as necessary.

IDLE LEARN PROCEDURE

Note. When Powertrain Control Module (PCM) or battery are disconnected, PCM loses power, or PCM is reprogrammed, PCM learned idle position is lost. When learned idle position is lost, engine idle will be unstable.

Start and allow it to idle for 15 seconds. Turn ignition off. Wait 15 seconds. Restart engine and check for proper idle operation.

PROGRAMMING THEFT DETERRENT SYSTEM COMPONENTS

If replacing a Powertrain Control Module (PCM) with a replacement part, after programming, these modules will learn incoming fuel continue password immediately upon receipt of a password message. Once a password message is received and a password is learned, a learn procedure must be performed to change this password again. A PCM which has been previously installed in another vehicle will have learned the other vehicle's fuel continue password and will require a learn procedure after programming to learn current vehicle's password.

1. Turn ignition on. Attempt to start engine, then release key to ON position (vehicle will not start). Observe SECURITY indicator. After about 10 minutes, SECURITY indicator will turn off. Turn ignition off and wait 5 seconds.
2. Repeat step 1 2 more times for a total of 3 cycles in 30 minutes. Vehicle is now ready to relearn key transponder information and/or passwords on next ignition switch transition from OFF to CRANK position.
3. Start engine. Vehicle has now learned the key transponder information and the PCM has now learned the fuel continue password. Using scan tool, clear any DTCs if needed.

DRIVE CYCLES

For drive cycle procedure, see INSPECTION/MAINTENANCE SYSTEM CHECK .

Conditions For Updating I/M System Status

Each system requires at least one, and sometimes several, diagnostic tests. The results of these tests are reported by a Diagnostic Trouble Code (DTC). A system monitor is complete when either all of the DTCs comprising the monitor have run and passed, or when any one of the DTCs comprising the monitor have illuminated the Malfunction Indicator Light (MIL). Once all of the tests have been completed, the I/M system status display will indicate YES in the completed column. For example, when the HO2S heater test indicates YES, all oxygen sensor heaters and circuits have been diagnosed. The I/M system status will indicate NO under the completed column when any of the required tests for that system have not run. The following is a list of conditions that will set the I/M system status indicator to NO

1. Vehicle is new from the factory and has not yet been driven through the necessary drive conditions in order to complete the tests.
2. Battery has been disconnected or discharged to less than operating voltage.
3. The PCM power or ground has been interrupted.
4. The PCM has been reprogrammed.
5. PCM DTCs have been cleared as part of a service procedure.

Enable Criteria

Ensure vehicle meets the following conditions before performing procedure

1. Barometric pressure is more than 10.4 psi (72 kPa).
2. Engine Coolant Temperature (ECT) is less than 104°F (40°C).
3. Intake Air Temperature (IAT) is less than 113°F (45°C).
4. Difference between ECT and IAT is 18°F (10°C) or less.
5. Battery voltage is 10-18 volts.
6. Fuel level is 15-18 percent full.

The following conditions are for running a passive test (engine in open loop).

1. Engine coolant temperature is less than 230°F (110°C).
2. Intake air temperature is more than 50°F (10°C).
3. Battery voltage is more than 9 volts.

The following conditions are for running an active test (engine in closed loop).

1. Engine coolant temperature is more than 167°F (75°C).
2. Intake air temperature is more than 50°F (10°C).
3. Battery voltage is more than 9 volts.
4. Engine is operating is closed loop fuel control.

1. Barometric pressure is more than 10.5 psi (72 kPa).
2. Engine coolant temperature is 167-248°F (75-120°C), normal operating temperature.
3. Intake air temperature is 66-176°F (19-80°C).
4. Engine is in closed loop.
5. Engine has run for 10 minutes off idle in order to initiate a test.
6. Battery voltage is 10-18 volts.

1. Barometric pressure is more than 10 psi (70 kPa).
2. Engine coolant temperature is more than 176°F (80°C).
3. Intake air temperature is less than 176°F (80°C).
4. Battery voltage is 11-18 volts.
5. Transmission state is steady.
6. Vehicle speed is greater than 25 MPH.

The following conditions are for non-scan tool service bay test equipped vehicles.

1. Barometric pressure is more than 10.5 psi (72 kPa).
2. Engine Coolant Temperature (ECT) is 39-86°F (4-30°C).
3. Intake Air Temperature (IAT) is 39-86°F (4-30°C).
4. Difference between ECT and IAT is less than 14°F (8°C).
5. Fuel level is 15-18 percent full.
6. Battery voltage is 10-18 volts.

The following conditions are for scan tool service bay test equipped vehicles.

1. Barometric pressure is more than 10.5 psi (72 kPa).
2. Engine coolant temperature is less than 158°F (70°C).
3. Fuel level is 15-18 percent full.
4. Battery voltage is 9-18 volts.

1. Engine coolant temperature is more than 167°F (75°C).
2. Engine is in closed loop.
3. Engine has been running more than 3 minutes.
4. Battery voltage is 9-18 volts.

1. Engine Coolant Temperature (ECT) is less than 104°F (40°C).
2. Intake Air Temperature (IAT) is less than 113°F (45°C).
3. Difference between ECT and IAT is less than 14°F (8°C).
4. Battery voltage is 10-18 volts.

SUMMARY

If no Diagnostic Trouble Codes (DTC) are present and a no-start condition exists, diagnose no-start condition. See appropriate BASIC DIAGNOSTIC PROCEDURES article. If no DTCs are present and a driveability condition exists, proceed to appropriate TROUBLE SHOOTING - NO CODES article for diagnosis by symptom (i.e., ROUGH IDLE, ENGINE STALLS, etc.).

MALFUNCTION INDICATOR LIGHT INOPERATIVE

1. If powertrain diagnostic system check was performed, go to next step. If powertrain diagnostic system check was not performed, go to «POWERTRAIN DIAGNOSTIC SYSTEM CHECK»(ref-126121-S16975031962001102400000) under DIAGNOSTIC SYSTEM CHECKS.
2. Turn ignition off. Remove and inspect fuse No. 12 (IGN 1 fuse) from rear fuse block. Rear fuse block is located underneath driver's side rear seat. If fuse is okay, reinstall fuse and go to next step. If fuse is blown, go to step 10.
3. Ensure ignition is off. Disconnect Powertrain Control Module (PCM) connectors. PCM is located in engine compartment, inside air filter housing. Turn ignition on. Connect a 3-amp fused jumper wire between ground and terminal No. 5 (Brown/White wire) at PCM C2 harness connector. (Scheme 29) Observe Malfunction Indicator Light (MIL). If MIL does not illuminate, go to next step. If MIL illuminates, go to step 9.
4. Check condition of fused jumper wire. If fused jumper wire is blown, go to step 11. If fused jumper wire is not blown, go to next step.
5. Turn ignition off. Remove Instrument Panel Cluster (IPC). See REMOVAL & INSTALLATION in appropriate ANALOG INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT. Check continuity of Brown/White wire between terminal B1 at IPC C2 harness connector and terminal No. 5 at PCM C2 harness connector. (Scheme 29)and (Scheme 30). If continuity exists, go to next step. If continuity does not exist, repair open in Brown/White wire. After repairs, go to step 14.
6. Using a test light connected to ground, probe terminal B4 (Pink wire) at IPC C2 harness connector. Turn ignition on. If test light does not illuminate, go to next step. If test light illuminates, go to step 8.
7. Repair open in Pink wire between IPC and rear fuse block. After repairs, go to step 14.
8. Check for faulty connections at IPC connector. Repair connector as necessary. After repairs, go to step 14. If connector is okay, go to step 12.
9. Check for faulty connections at PCM connectors. Repair connectors as necessary. After repairs, go to step 14. If connectors are okay, go to step 13.
10. Repair short to ground in Pink wire between IPC and rear fuse block. Replace fuse. After repairs, go to step 14.
11. Repair short to voltage in Brown/White wire between terminal B1 at IPC C2 harness connector and terminal No. 5 at PCM C2 harness connector. After repairs, go to step 14.
12. Replace IPC. After repairs, go to step 14.
13. Replace PCM. Program replacement PCM. See «PROGRAMMING»(ref-126121-S25122286972001102400000). After repairs, go to next step.
14. Recheck operation of MIL. If MIL operates properly, repair is complete. If MIL does not operate properly, go to step 2.

Scheme 29

Scheme 30

MALFUNCTION INDICATOR LIGHT ALWAYS ON

1. If powertrain diagnostic system check was performed, go to next step. If powertrain diagnostic system check was not performed, go to «POWERTRAIN DIAGNOSTIC SYSTEM CHECK»(ref-126121-S16975031962001102400000) under DIAGNOSTIC SYSTEM CHECKS.
2. Turn ignition off. Disconnect Powertrain Control Module connectors. PCM is located in engine compartment, inside air filter housing. Turn ignition on. If MIL illuminates, go to next step. If MIL does not illuminate, go to step 5.
3. Turn ignition off. Remove Instrument Panel Cluster (IPC). See REMOVAL & INSTALLATION in appropriate ANALOG INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT. Using a test light connect to positive battery voltage, probe terminal B1 (Brown/White wire) at IPC C2 harness connector. (Scheme 30) If test light does not illuminate, go to step 6. If test light illuminates, repair short to ground in Brown/White wire. After repairs, go to step 6.
4. Replace IPC. After repairs, go to step 6.
5. Replace PCM. Program replacement PCM. See «PROGRAMMING»(ref-126121-S25122286972001102400000). After repairs, go to next step.
6. Recheck operation on MIL. If MIL operates properly, repair is complete. If MIL does not operate properly, go to step 2.

Code Enable Criteria

Only condition for running this DTC is ignition must be on.

Only condition for running this DTC is ignition must be on.

1. Engine speed is more than 250 RPM.
2. Ignition 1 signal is 9-18 volts.
3. Throttle Position (TP) sensor angle is less than 50 percent.
4. TP sensor angle is steady within a range of less than 1.5 percent.
5. Manifold Absolute Pressure (MAP) sensor signal is steady and less than .4 psi (3 kPa).
6. Exhaust Gas Recirculation (EGR) position sensor signal is less than 100 percent.
7. Evaporative Emission (EVAP) purge solenoid command is less than 100 percent.
8. All listed conditions are stable for at least 5 seconds.

Scheme 31

1. If powertrain diagnostic system check has already been performed, go to next step. If powertrain diagnostic system check has not been performed, go to «POWERTRAIN DIAGNOSTIC SYSTEM CHECK»(ref-126121-S16975031962001102400000) under DIAGNOSTIC SYSTEM CHECKS.
2. Start engine. Using scan tool, check for any other DTCs that are set. If no other DTCs are set, go to next step. If any other DTCs are set, repair DTCs as necessary. See «DIAGNOSTIC TROUBLE CODE DEFINITIONS»(ref-126121-S19628632112001102400000).
3. Using scan tool, observe and record FREEZE FRAME/FAILURE RECORDS data for this DTC. Turn ignition off for 30 seconds. Start engine. Operate vehicle within conditions for running the DTC as specified in code enable criteria, or as close to recorded FREEZE FRAME/FAILURE RECORDS data as possible. If DTC resets, go to next step. If DTC does not reset, see «DIAGNOSTIC AIDS»(ref-126121-S27789786932001102400000).
4. Ensure engine is idling. Using scan tool, observe MAP sensor voltage parameter. If voltage is.8-4.0 volts, go to next step. If voltage is not.8-4.0 volts, diagnose MAP sensor low or high voltage. See «DTC P0107: MANIFOLD ABSOLUTE PRESSURE SENSOR CIRCUIT LOW VOLTAGE»(ref-126121-S32229672432001102400000) or «DTC P0108: MANIFOLD ABSOLUTE PRESSURE SENSOR CIRCUIT HIGH VOLTAGE»(ref-126121-S04021339072001102400000).
5. Turn ignition off. Check for objects blocking MAF sensor air inlet screen. MAF sensor is located in top of air filter housing. Check for plugged or collapsed intake air duct or dirty air filter element. Check for vacuum leaks in the following components. Air Induction System And Resonator Throttle Body And Gasket Intake Manifold EGR Valve Flange And Pipe MAF Sensor MAP Sensor EVAP Canister Purge Valve Seal Crankcase Ventilation System Brake Booster If any problems are found, repair as necessary. After repairs, go to step 24. If no problems are found, go to next step.
6. Turn ignition off. Remove MAP sensor vacuum source. (Scheme 31) Leave MAP sensor electrical connector connected. Connect a hand operated vacuum pump to MAP sensor vacuum port. Turn ignition on. Using scan tool, observe MAP sensor parameter while slowly applying vacuum one in. Hg at a time. Apply up to 20 in. Hg. Each one in. Hg of vacuum applied should result in a.4-.6 psi (3-4 kPa) drop in MAP sensor value indicated on scan tool. MAP sensor value should change smoothly with each one in. Hg increase. If MAP sensor value changed smoothly through entire range of test, go to next step. If MAP sensor value did not change smoothly through entire range of test, go to step 21.
7. Observe scan tool and apply 20 in. Hg vacuum to MAP sensor. If scan tool indicates MAP sensor reading is 4.9 psi (34 kPa) or less, go to next step. If scan tool indicates MAP sensor reading is more than 4.9 psi (34 kPa), go to step 21.
8. Observe scan tool and disconnect vacuum pump from MAP sensor. If MAP sensor reading returns to original value that was observed in step 6, go to next step. If MAP sensor reading does not return to original value, go to step 21.
9. Using scan tool, observe TP sensor angle parameter from closed throttle to wide open throttle. If TP sensor value changed from zero to 100 percent smoothly, go to next step. If TP sensor value did not change from zero to 100 percent or did not change smoothly, go to «DTC P0121: THROTTLE POSITION SENSOR CIRCUIT INSUFFICIENT ACTIVITY»(ref-126121-S11694717222001102400000).
10. Turn ignition off. Disconnect MAF sensor connector. Turn ignition on. Measure voltage between ground and terminal "A" (Yellow wire) at MAF sensor harness connector. see scheme 7 If voltage is about 5 volts, go to next step. If voltage is not about 5 volts, go to step 12.
11. Using a test light connected to ground, probe terminal "C" (Pink wire) at MAF sensor harness connector. If test light illuminates, go to step 19. If test light does not illuminate, go to step 14.
12. If voltage measured in step 10 is less than 4.5 volts, go to step 15. If voltage measured in step 10 is not less than 4.5 volts, go to next step.
13. Turn ignition off. Disconnect PCM connectors. PCM is located in engine compartment, inside air filter housing. Turn ignition on. Measure voltage between ground and terminal "A" (Yellow wire) at MAF sensor harness connector. If voltage is zero volts, go to step 23. If voltage is not zero volts, go to step 18.
14. Using a test light connected to ground, probe terminal "C" (Pink wire) at MAF sensor harness connector. If test light illuminates, go to step 16. If test light does not illuminate, go to step 17.
15. Turn ignition off. Disconnect PCM connectors. PCM is located in engine compartment, inside air filter housing. Check for an open or short to ground in Yellow wire between terminal "A" at MAF sensor harness connector and terminal No. 69 at PCM C1 harness connector. (Scheme 29)and see scheme 7. Also check if Yellow wire at terminal "A" is shorted to Black/White wire at terminal "B" at MAF sensor harness connector. If Yellow wire is open, shorted to ground, or shorted to Black/White wire, repair wiring as necessary. After repairs, go to step 24. If wiring is okay, go to step 20.
16. Repair open or high resistance in Black/White wire between ground and terminal "B" at MAF sensor. See WIRING DIAGRAMS article. After repairs, go to step 24.
17. Check for an open or short to ground in Pink wire between underhood fuse block and terminal "C" at MAF sensor. Also check fuse No. 11 (IGN 1 fuse) in underhood fuse block. Replace fuse as necessary. After repairs, go to step 24. If wiring is okay, go to 22.
18. Repair short to voltage in Yellow wire between PCM and MAF sensor. After repairs, go to step 24.
19. Check for poor connections at MAF sensor connector. Repair connector as necessary. After repairs, go to step 24. If connector is okay, go to step 22.
20. Check for poor connections at PCM connectors. Repair connectors as necessary. After repairs, go to step 24. If connectors are okay, go to step 23.
21. Replace MAP sensor. After repairs, go to step 24.
22. Replace MAF sensor. After repairs, go to step 24.
23. Replace PCM. Program replacement PCM. See «PROGRAMMING»(ref-126121-S25122286972001102400000). After repairs, go to next step.
24. Turn ignition off. Reconnect all disconnected connectors. Turn ignition on. Using scan tool, clear DTCs. Turn ignition off for 30 seconds. Start engine. Operate vehicle within conditions for running the DTC as specified in code enable criteria. If DTC runs and passes, go to next step. If DTC resets, go to step 2.
25. Using scan tool, check for any other DTCs that are set. If no other DTCs are set, test is complete. If any other DTCs are set, repair DTCs as necessary. See «DIAGNOSTIC TROUBLE CODE DEFINITIONS»(ref-126121-S19628632112001102400000).

1. Engine run time is more than one second.
2. Engine speed is more than 250 RPM.
3. Ignition 1 signal is more than 8 volts.

1. Engine run time is more than one second.
2. Engine speed is more than 250 RPM.
3. Ignition 1 signal is 8 volts or more.

1. DTC P0121, P0122 or P0123 is not set.
2. Throttle Position (TP) sensor is more than 10 percent when engine speed is more than 1000 RPM.
3. TP sensor is more than zero percent when engine speed is less than 1000 RPM.

1. DTC P0121, P0122 or P0123 is not set.
2. Throttle angle is less than 2 percent.
3. Engine speed is less than 3000 RPM.

1. DTC P0117, P0118, P0125, P0502, P0503, P1114 or P1115 is not set.
2. Engine run time is more than 10 seconds.
3. Vehicle speed is more than 25 MPH.

1. DTC P0101, P0102, P0103, P0117, P0118, P0125, P0502, P0503, P1114 or P1115 is not set.
2. Engine run time is more than 3 minutes.
3. Engine coolant temperature is more than 140°F (60°C).
4. Vehicle speed is less than 35 MPH.

Only condition for running this DTC is engine run time must be more than 15 seconds.

Only condition for running this DTC is engine run time must be more than 15 seconds.

1. No other MAP sensor or TP sensors are set.
2. Engine run time is more than 2 minutes.
3. Engine coolant temperature is more than 167°F (75C).
4. MAP reading is less than 7.3 psi (50 kPa) for a TP sensor skewed high test.
5. MAP reading is more than 10.2 psi (70 kPa) for a TP sensor skewed low test.
6. MAP is steady for 5 seconds or more.

Scheme 32

1. If powertrain diagnostic system check has already been performed, go to next step. If powertrain diagnostic system check has not been performed, go to «POWERTRAIN DIAGNOSTIC SYSTEM CHECK»(ref-126121-S16975031962001102400000) under DIAGNOSTIC SYSTEM CHECKS.
2. Turn ignition on. Using scan tool, observe TP sensor angle parameter while slowly opening throttle to WOT. If TP sensor angle increased steadily from zero percent to 98 percent, go to next step. If TP sensor angle did not increase steadily from zero percent to 98 percent, go to step 4.
3. Using scan tool, observe and record FREEZE FRAME/FAILURE RECORDS data for this DTC. Turn ignition off for 30 seconds. Start engine. Operate vehicle within conditions for running the DTC as specified in code enable criteria, or as close to recorded FREEZE FRAME/FAILURE RECORDS data as possible. If DTC resets, go to next step. If DTC does not reset, see «DIAGNOSTIC AIDS»(ref-126121-S36198297392001102400000).
4. Turn ignition off. Disconnect TP sensor connector. Turn ignition on. Using scan tool, observe TP sensor voltage. If voltage is zero volts, go to next step. If voltage is not zero volts, to step 6.
5. Turn ignition off. Connect a 3-amp fused jumper wire between terminal "A" (Gray wire) and terminal "C" (Dark Blue wire) at TP sensor harness connector. (Scheme 32) Using scan tool, observe TP sensor voltage. If voltage is 5 volts, go to step 9. If voltage is not 5 volts, go to step 7.
6. Turn ignition off. Disconnect PCM connectors. PCM is located in engine compartment, inside air filter housing. Turn ignition on. Measure voltage between ground and terminal No. 66 (Dark Blue wire) at PCM C2 harness connector. (Scheme 29) If any voltage is indicated, repair short to voltage in Dark Blue wire. After repairs, go to 14. If no voltage is indicated, go to step 12.
7. Turn ignition off. Check continuity of Gray wire between terminal "A" at TP sensor harness connector and terminal No. 33 at PCM C2 harness connector. (Scheme 29)and (Scheme 32). If continuity exists, go to next step. If continuity does not exist, repair open in Gray wire. After repairs, go to step 14.
8. Check continuity of Dark Blue wire between terminal "C" at TP sensor harness connector and terminal No. 66 at PCM C2 harness connector. If continuity exists, go to step 11. If continuity does not exist, repair open in Dark Blue wire. After repairs, go to step 14.
9. Check continuity of Black wire between terminal "B" at TP sensor harness connector and terminal No. 61 at PCM C1 harness connector. If continuity exists, go to next step. If continuity does not exist, repair open in Black wire. After repairs, go to step 14.
10. Check for poor connections at TP sensor connector. Repair connector as necessary. After repairs, go to step 14. If connector is okay, go to step 12.
11. Check for poor connections at PCM connectors. Repair connectors as necessary. After repairs, go to step 14. If connectors are okay, go to step 13.
12. Replace TP sensor. After repairs, go to step 14.
13. Replace PCM. Program replacement PCM. See «PROGRAMMING»(ref-126121-S25122286972001102400000). After repairs, go to next step.
14. Turn ignition off. Reconnect all disconnected connectors. Turn ignition on. Using scan tool, clear DTCs. Turn ignition off for 30 seconds. Start engine. Operate vehicle within conditions for running the DTC as specified in code enable criteria. If DTC runs and passes, go to next step. If DTC resets, go to step 2.
15. Using scan tool, check for any other DTCs that are set. If no other DTCs are set, test is complete. If any other DTCs are set, repair DTCs as necessary. See «DIAGNOSTIC TROUBLE CODE DEFINITIONS»(ref-126121-S19628632112001102400000).

Only condition for running this DTC is ignition must be on.

Only condition for running this DTC is ignition must be on.

1. DTC P0112, P0113, P0117, P0118, P1114 or P1115 is not set.
2. Engine is running.
3. Engine coolant temperature at start-up is 122°F (50°C).
4. Engine coolant temperature is more than -40°F (-40°C).
5. Intake air temperature is -40 to 104°F (-40 to 40°C).
6. Vehicle speed is more than one MPH.

Note. HO2S bank 1 sensor 1 is located in right (rear) exhaust manifold.

1. DTC P0101, P0102, P0103, P0107, P0108, P0117, P0118, P0121, P0122, P0123, P0125, P0131, P0132, P1106, P1107, P1114, P1115, P1121 or P1122 is not set.
2. Engine running time is more than 1 minutes.
3. Engine coolant temperature is more than 167°F (75°C).

Note. HO2S bank 1 sensor 1 is located in right (rear) exhaust manifold.

1. DTC P0101, P0102, P0103, P0107, P0108, P0112, P0113, P0117, P0118, P0121, P0122, P0123, P0201-P0206, P0410, P0412, P0418, P0440, P0442, P0443, P0446, P0449, P1106, P1107, P1111, P1112, P1114, P1115, P1121, P1122 or P1441 is not set.
2. Throttle position angle is 3-40 percent.
3. System voltage is 9-18 volts.
4. Closed loop fuel control enabled.
5. Air/fuel ratio is 14.4-14.9:1.

Note. HO2S bank 1 sensor 1 is located in right (rear) exhaust manifold.

1. Diagnostic Trouble Code (DTC) P0101, P0102, P0103, P0107, P0108, P0112, P0113, P0117, P0118, P0121, P0122, P0123, P0201-P0206, P0410, P0412, P0418, P0440, P0442, P0443, P0446, P0449, P1106, P1107, P1111, P1112, P1114, P1115, P1121, P1122 or P1441 is not set.
2. Throttle position angle is 3-40 percent.
3. System voltage is 9-18 volts.
4. Closed loop fuel control enabled.
5. Air/fuel ratio is 14.4-14.9:1.

Note. HO2S bank 1 sensor 1 is located in right (rear) exhaust manifold.

1. DTC P0101, P0102, P0103, P0107, P0108, P0112, P0113, P0117, P0118, P0121, P0122, P0123, P0131, P0132, P0135, P0201-P0206, P0300, P0440, P0442, P0443, P0446, P0449, P1106, P1107, P1111, P1112, P1114, P1115, P1121, P1122, P1133 or P1441 is not set.
2. Engine speed is 1200-2300 RPM.
3. Throttle position angle is more than 3 percent.
4. Mass airflow is 15-35 grams/sec.
5. System voltage is more than 9 volts.
6. Closed loop fuel control enabled.
7. Engine coolant temperature is more than 167°F (75°C).
8. Engine run time is more than 3 minutes.
9. Listed conditions are met for 3 seconds.

Note. HO2S bank 1 sensor 1 is located in right (rear) exhaust manifold.

1. DTC P0101, P0102, P0103, P0107, P0108, P0112, P0113, P0117, P0118, P0121, P0122, P0123, P0201-P0206, P0440, P0442, P0443, P0446, P0449, P1106, P1107, P1111, P1112, P1114, P1115, P1121, P1122 or P1441 is not set.
2. System voltage is 9-18 volts.
3. Engine run time is more than 4 minutes.

Note. HO2S bank 1 sensor 1 is located in right (rear) exhaust manifold.

1. DTC P0101, P0102, P0103, P0107, P0108, P0112, P0113, P0117, P0118, P0121, P0122, P0123, P0201-P206, P0410, P0412, P0418, P0440, P0442, P0443, P0446, P0449, P1106, P1107, P1111, P1112, P1114, P1115, P1121, P1122 or P1441 is not set.
2. System voltage is 9-18 volts.
3. Engine speed is 100-2500 RPM.
4. Engine run time is more than 3 minutes.
5. Engine coolant temperature is more than 167°F (75°C).
6. Mass airflow is 12-35 grams/sec.

Note. HO2S bank 1 sensor 2 is located behind catalytic converter.

1. DTC P0101, P0102, P0103, P0107, P0108, P0112, P0113, P0117, P0118, P0121, P0122, P0123, P0201-P206, P0410, P0412, P0418, P0440, P0442, P0443, P0446, P0449, P1106, P1107, P1111, P1112, P1114, P1115, P1121, P1122, or P1441 is not set.
2. System voltage is more than 9 volts and less than 18 volts.
3. Closed loop commanded air/fuel ratio is 14.4-14.9:1.
4. Throttle angle is 3-40 percent.

Note. HO2S bank 1 sensor 2 is behind catalytic converter.

1. DTC P0101, P0102, P0103, P0107, P0108, P0112, P0113, P0117, P0118, P0121, P0122, P0123, P0201-P0206, P0410, P0412, P0418, P0440, P0442, P0443, P0446, P0449, P1106, P1107, P1111, P1112, P1114, P1115, P1121, P1122 or P1441 is not set.
2. Throttle position angle is 3-40 percent.
3. System voltage is more than 9 volts.
4. Closed loop fuel control enabled.
5. Air/fuel ratio is 14.4-14.9:1.

Note. Post catalytic HO2S is also referred to as HO2S bank 1 sensor 2. HO2S bank 1 sensor 2 is behind catalytic converter.

1. DTC P0101, P0102, P0103, P0107, P0108, P0112, P0113, P0117, P0118, P0121, P0122, P0123, P0141, P0201-P0206, P0410, P0412, P0418, P0440, P0442, P0443, P0446, P0449, P1106, P1107, P1111, P1112. P1114, P1115, P1121, P1122 or P1441 is not set.
2. System voltage is 9-18 volts.
3. Engine run time is more than 4 minutes.

Note. HO2S bank 1 sensor 2 is located behind catalytic converter.

1. DTC P0137 or P0138 is not set.
2. Intake Air Temperature (IAT) at start-up is less than 113°F (45°C).
3. Engine Coolant Temperature (ECT) is less than 104°F (40°C).
4. IAT and ECT are within 50°F (10°C) of each other at start-up.
5. System voltage is 10-18 volts.
6. Average mass airflow is less than 25 grams/sec.

1. DTC P0101, P0102, P0103, P0107, P0108, P0121, P0122, P0123, P0130, P0131, P0132, P0133, P0134, P0135, P0137, P0138, P0140, P0141, P0201, P0202, P0203, P0204, P0205, P0206, P0300, P0401, P0403, P0404, P0405, P0410, P0440, P0442, P0446, P0506, P0507, P1404 or P1441 is not set.
2. Coolant temperature is 68-239°F (20-115°C).
3. Intake air temperature is -4 to 168°F (-18 to 76°C).
4. Manifold absolute pressure is 2.1-12.3 psi (15-85 kPa).
5. Vehicle speed is less than 82 MPH.
6. Engine speed is 575-4000 RPM.
7. Barometric pressure is more than 10.1 psi (75 kPa).
8. Mass airflow is 3-85 grams/sec.
9. Fuel level is more than 10 percent.

1. DTC P0101, P0102, P0103, P0107, P0108, P0121, P0122, P0123, P0130, P0131, P0132, P0133, P0134, P0135, P0137, P0138, P0140, P0141, P0201, P0202, P0203, P0204, P0205, P0206, P0300, P0401, P0403, P0404, P0405, P0410, P0440, P0442, P0446, P0506, P0507, P1404 or P1441 is not set.
2. Coolant temperature is 68-239°F (20-115°C).
3. Intake air temperature is -4 to 168°F (-18 to 76°C).
4. Manifold absolute pressure is 2.1-12.3 psi (15-85 kPa).
5. Vehicle speed is less than 82 MPH.
6. Engine speed is 575-4000 RPM.
7. Barometric pressure is more than 10.1 psi (75 kPa).
8. Mass airflow is 3-85 grams/sec.
9. Fuel level is more than 10 percent.

1. Engine is running.
2. Ignition voltage is 11-16 volts.

1. Engine is running.
2. Ignition voltage is 8-16 volts.

1. DTC P0101, P0102, P0103, P0107, P0108, P0117, P0118, P0123, P0335, P0340, P0385, P0501, P0503, P1106, P1107, P1114, P1115, P1121, P1122 or P1336 is not set.
2. Engine speed is 500-5850 RPM.
3. System voltage is 9-16 volts.
4. Engine coolant temperature is 19-248°F (-7 to 120°C).
5. Throttle angle is steady.
6. Fuel level is more than 10 percent.
7. Decel fuel cutoff mode and torque management are not active.

1. DTC P0101, P0102, P0103, P0121, P0122, P0123, P0335, P0340, P0385, P0502, P0503, P1114, P1115, P1121, P1122 or P1336 is not set.
2. Engine speed is 1000-3000 RPM.
3. Throttle angle is more than 15 percent.
4. Engine load is more than 45 percent.
5. Engine coolant temperature is more than 149°F (65°C).
6. Maximum spark retard is less than 15 degrees.
7. System voltage is more than 9 volts.
8. Engine run time is more than 30 seconds.

1. DTC P0101, P0102, P0103, P0121, P0122, P0123, P0335, P0340, P0385, P0502, P0503, P1114, P1115, P1121, P1122 or P1336 is not set.
2. Engine speed is 1000-3000 RPM.
3. Throttle angle is more than 15 percent.
4. Engine load is more than 45 percent.
5. Engine coolant temperature is more than 149°F (65°C).
6. Maximum spark retard is less than 15 degrees.
7. System voltage is more than 9 volts.
8. Engine run time is more than 30 seconds.

Only condition for running this Diagnostic Trouble Code (DTC) is engine must be cranking or running.

Scheme 33

1. If powertrain diagnostic system check has already been performed, go to next step. If powertrain diagnostic system check has not been performed, go to «POWERTRAIN DIAGNOSTIC SYSTEM CHECK»(ref-126121-S16975031962001102400000) under DIAGNOSTIC SYSTEM CHECKS.
2. Attempt to start engine. If engine starts and runs, go to next step. If engine does not start, go to step 5.
3. Ensure engine is idling. Using scan tool, monitor CKP sensor status parameter. If scan tool indicates CKP sensor status as ANGLE, go to next step. If scan tool does not indicate CKP sensor status as ANGLE, turn ignition off and go to step 5.
4. Ensure engine is running. Observe scan tool and wiggle CKP sensor wiring harness. CKP sensor is located above starter motor and has a 6-pin connector. If CKP sensor status changes or engine stalls, a fault exists in CKP sensor wiring harness or connector. Go to step 12. If CKP sensor status doe not change and engine does not stall, see «DIAGNOSTIC AIDS»(ref-126121-S17096078082001102400000). NOTE: The following steps apply to the sensor and related circuitry that is malfunctioning. For example, it scan tool indicates TIME A, system is using signal from CKP sensor "A". CKP sensor "B" and related circuits should be diagnosed.
5. Turn ignition off. Disconnect CKP sensor connector. CKP sensor is located above starter motor and has a 6-pin connector. Turn ignition on. If testing CKP sensor "A", measure voltage between ground and terminal "A" (Red wire) at CKP sensor harness connector. (Scheme 33) If testing CKP sensor "B", measure voltage between ground and terminal "D" (Red/Black wire) at CKP sensor harness connector. (Scheme 33) On all applications, if battery voltage is present, go to next step. If battery voltage is not present, go to step 13.
6. If testing CKP sensor "A", connect DVOM between terminal "A" (Red wire) and terminal "E" (Pink wire) at CKP sensor harness connector. If testing CKP sensor "B", connect DVOM between terminal "B" (Pink/Black wire) and terminal "D" (Red/Black wire) at CKP sensor harness connector. On all applications, if battery voltage is present, go to next step. If battery voltage is not present, go to step 14. NOTE: In the following step, PCM must be commanded to look at the CKP sensor being tested. Using scan tool, set CRANK POSITION SENSING DECODE MODE to TIME A if testing CKP sensor "A", or set mode to TIME "B" if testing CKP sensor "B".
7. Turn ignition off and wait 15 seconds. Turn ignition on. Using scan tool, clear DTCs. Using scan tool, command PCM to operate in appropriate TIME mode for CKP sensor being tested. Observe 24X crank sensor data on scan tool. If testing CKP sensor "A", using a test light connected to positive battery voltage, repeatedly touch terminal "F" (Light Blue/White wire) at CKP sensor harness connector. If testing CKP sensor "B", using a test light connected to positive battery voltage, repeatedly touch terminal "C" (Yellow wire) at CKP sensor "B" harness connector. On all applications, if scan tool indicates an RPM when touching terminal, go to step 19. If scan tool does not indicate an RPM when touching terminal, go to next step.
8. Turn ignition off. Disconnect PCM connectors. PCM is located in engine compartment, inside air filter housing. Turn ignition on. If testing CKP sensor "A", measure voltage between ground and terminal "F" (Light Blue/White wire) at CKP sensor harness connector. If testing CKP sensor "B", measure voltage between ground and terminal "C" (Yellow wire) at CKP sensor harness connector. On all applications, if any voltage is indicated, go to step 17. If no voltage is indicated, go to next step.
9. Turn ignition off. If testing CKP sensor "A", check continuity of Light Blue/White wire between terminal "F" at CKP sensor harness connector and terminal No. 8 at PCM C1 harness connector. (Scheme 29)and (Scheme 33). If testing CKP sensor "B", check continuity of Yellow wire between terminal "C" at CKP sensor harness connector and terminal No. 9 at PCM C1 harness connector. On all applications, if continuity exists, go to next step. If continuity does not exist, go to step 15.
10. Turn ignition off. If testing CKP sensor "A", check continuity between ground and terminal "F" (Light Blue/White wire) at CKP sensor harness connector. If testing CKP sensor "B", check continuity between ground and terminal "C" (Yellow wire) at CKP sensor harness connector. On all applications, if continuity exists, go to step 16. If continuity does not exist, go to next step.
11. Check for continuity between terminal "F" (Light Blue/White wire) and terminal "C" (Yellow wire) at CKP sensor harness connector. If continuity exists, go to step 18. If continuity does not exist, go to step 21.
12. Check for damaged wiring harness and for poor connections at CKP sensor connector. Repair wiring harness or connector as necessary. After repairs, go to step 23. If wiring harness and connector are okay, go to step 20.
13. Turn ignition off. Disconnect PCM connectors. PCM is located in engine compartment, inside air filter housing. If testing CKP sensor "A", check continuity of Red wire between terminal "A" at CKP sensor harness connector and terminal No. 70 at PCM C2 harness connector. (Scheme 29)and (Scheme 33). If testing CKP sensor "B", check continuity of Red/Black wire between terminal "D" at CKP sensor harness connector and terminal No. 71 at PCM C2 harness connector. On all applications, if continuity does not exist, repair open in Red or Red/Black wire. After repairs, go to step 23. If continuity exists, go to step 21.
14. Turn ignition off. Disconnect PCM connectors. PCM is located in engine compartment, inside air filter housing. If testing CKP sensor "A", check continuity of Pink wire between terminal "E" at CKP sensor harness connector and terminal No. 80 at PCM C2 harness connector. (Scheme 29)and (Scheme 33). If testing CKP sensor "B", check continuity of Pink/Black wire between terminal "B" at CKP sensor harness connector and terminal No. 74 at PCM C2 harness connector. On all applications, if continuity does not exist, repair open in Pink or Pink/Black wire. After repairs, go to step 23. If continuity exists, go to step 21.
15. Repair open in Light Blue/White wire or Yellow wire between CKP sensor and PCM. After repairs, go to step 23.
16. Repair short to ground in Light Blue/White wire or Yellow wire between CKP sensor and PCM. After repairs, go to step 23.
17. Repair short to voltage in Light Blue/White wire or Yellow wire between CKP sensor and PCM. After repairs, go to step 23.
18. Repair wiring harness as necessary. After repairs, go to step 23.
19. Check for poor connections at CKP sensor connector. Repair connector as necessary. After repairs, go to step 23. If connector is okay, go to next step.
20. Replace CKP sensor. After repairs, go to step 23.
21. Check for poor connections at PCM connectors. Repair connectors as necessary. After repairs, go to step 23. If connectors are okay, go to next step.
22. Replace PCM. Program replacement PCM. See «PROGRAMMING»(ref-126121-S25122286972001102400000). After repairs, go to next step.
23. Turn ignition off. Reconnect all disconnected connectors. Turn ignition on. Using scan tool, clear DTCs. Turn ignition off for 30 seconds. Start engine. Operate vehicle within conditions for running the DTC as specified in code enable criteria. If DTC runs and passes, go to next step. If DTC resets, go to step 2.
24. Using scan tool, check for any other DTCs that are set. If no other DTCs are set, test is complete. If any other DTCs are set, repair DTCs as necessary. See «DIAGNOSTIC TROUBLE CODE DEFINITIONS»(ref-126121-S19628632112001102400000).

Only condition for running this DTC is engine must be cranking or running.

1. DTC P0101, P0102, P0103, P0107, P0108, P0112, P0113, P0117, P0118, P0121, P0122, P0123, P0201-P0206, P0300, P0335, P0385, P0403, P0404, P0405, P0502, P0503, P0506, P0507, P1106, P1107, P1112, P1114, P1115, P1121, P1122, P1372 or P1404 is not set.
2. System voltage is 11-18 volts.
3. A/C status does not change.
4. Transaxle range does not change.
5. Throttle position angle is less than 1.3 percent, deceleration.
6. Deceleration fuel cut-off is steady for .3 second.
7. Intake air temperature is more than 176°F (80°C).
8. Engine coolant temperature is more than 176°F (80°C).
9. Engine speed is 900-1200 RPM.
10. Idle air control valve position is steady.
11. Vehicle speed is more than 23 MPH.
12. Barometric Pressure is more than 10 psi (70 kPa).
13. Vehicle needs to be driven at more than 50 MPH, then allowed to decelerate. When vehicle is decelerating while meeting all of the criteria listed, PCM will enable test to run. During the test, desired EGR parameter and EGR position sensor on scan tool will change from zero to a calibrated valve more than zero.

1. Engine is cranking or running.
2. System voltage is 9-18 volts.

Scheme 34

1. If powertrain diagnostic system check has already been performed, go to next step. If powertrain diagnostic system check has not been performed, go to «POWERTRAIN DIAGNOSTIC SYSTEM CHECK»(ref-126121-S16975031962001102400000) under DIAGNOSTIC SYSTEM CHECKS.
2. Ensure ignition is on. Using scan tool, command EGR from zero to 100 percent. If EGR position sensor remains close to desired EGR position at all commanded positions, go to next step. If EGR position sensor does not remain close to desired EGR position at all commanded positions, go to step 4.
3. Using scan tool, observe and record FREEZE FRAME/FAILURE RECORDS data for this DTC. Turn ignition off for 30 seconds. Start engine. Operate vehicle within conditions for running the DTC as specified in code enable criteria, or as close to recorded FREEZE FRAME/FAILURE RECORDS data as possible. If DTC resets, go to next step. If DTC does not reset, fault may be intermittent. See INTERMITTENTS in appropriate TROUBLE SHOOTING - NO CODES article.
4. Turn ignition off. Disconnect EGR valve connector. (Scheme 31) Turn ignition on. Using a test light connected to ground, probe terminal "E" (White wire) at EGR valve harness connector. (Scheme 34) Using scan tool, command EGR 0-10 percent. If test light turns on and off with each command, go to next step. If test light does not turn on and off with each, go to step 6.
5. Connect test light between terminal "A" (Gray wire) and terminal "E" (White wire) at EGR valve harness connector. Using scan tool, command EGR 0-10 percent. If test light turns on and off with each command, go to step 10. If test light does not turn on and off with each command, go to step 9.
6. If test light remains on with each command, go to step 8. If test light does not remain on with each command, go to next step.
7. Turn ignition off. Disconnect PCM connectors. PCM is located in engine compartment, inside air filter housing. Check for an open or short to ground in White wire between terminal "E" at EGR valve harness connector and terminal No. 4 at PCM C2 harness connector. (Scheme 29)and (Scheme 34). If any problems are found, repair as necessary. After repairs, go to step 14. If no problems are found, go to step 11.
8. Turn ignition off. Disconnect PCM connectors. PCM is located in engine compartment, inside air filter housing. Turn ignition on. Measure voltage between ground and terminal "E" (White wire) at EGR valve harness connector. If any voltage is indicated, repair short to voltage in White wire between EGR valve and PCM. After repairs, go to step 14. If no voltage is indicated, go to step 11.
9. Turn ignition off. Disconnect PCM connectors. PCM is located in engine compartment, inside air filter housing. Check continuity of Gray wire between terminal "A" at EGR valve harness connector and terminal No. 32 at PCM C1 harness connector. (Scheme 29)and (Scheme 34). If continuity does not exist, repair open in Gray wire. After repairs, go to step 14. If continuity exists, go to step 11.
10. Check for poor connections at EGR valve connector. Repair connector as necessary. After repairs, go to step 14. If connector is okay, go to step 12.
11. Check for poor connections at PCM connectors. Repair connectors as necessary. After repairs, go to step 14. If connectors are okay, go to step 13.
12. Replace EGR valve. After repairs, go to step 14.
13. Replace PCM. Program replacement PCM. See «PROGRAMMING»(ref-126121-S25122286972001102400000). After repairs, go to next step.
14. Turn ignition off. Reconnect all disconnected connectors. Turn ignition on. Using scan tool, clear DTCs. Turn ignition off for 30 seconds. Start engine. Operate vehicle within conditions for running the DTC as specified in code enable criteria. If DTC runs and passes, go to next step. If DTC resets, go to step 2.
15. Using scan tool, check for any other DTCs that are set. If no other DTCs are set, test is complete. If any other DTCs are set, repair DTCs as necessary. See «DIAGNOSTIC TROUBLE CODE DEFINITIONS»(ref-126121-S19628632112001102400000).

1. System voltage is more than 10 volts.
2. EGR is enabled.

Only condition for running this DTC is system voltage must be more than 10 volts.

1. DTC P0030, P0036, P0101, P0102, P0103, P0112, P0117, P0118, P0121, P0122, P0123, P0125, P0131, P0132, P0133, P0134, P0135, P0137, P0138, P0140, P0141, P0171, P0172, P0300, P0440, P0442, P0446, P0449, P0502, P0503, P1111, P1112, P1114, P1115, P1121, P1122, P1133, P1134, P1380, P1381, or P1441 is not set.
2. At start-up, engine coolant temperature is less than 132°F (56°C).
3. Engine is running.
4. Short term fuel trim is .96-1.04.
5. Engine speed is more than 1200 RPM.
6. Engine load is greater than zero percent.
7. Ignition voltage is more than 9 volts.
8. Mass airflow is 0-25 grams/sec.
9. Air/fuel ratio is more than 13.0:1.
10. Engine coolant temperature is 41-230°F (5-110°C).
11. Intake air temperature is 41-158°F (5-70°C).
12. Vehicle speed is more than 25 MPH.

Scheme 35

1. If powertrain diagnostic system check has already been performed, go to next step. If powertrain diagnostic system check has not been performed, go to «POWERTRAIN DIAGNOSTIC SYSTEM CHECK»(ref-126121-S16975031962001102400000) under DIAGNOSTIC SYSTEM CHECKS. NOTE: If DTC P0412 or P0418 is also set, repair DTC before continuing with this test. See «DIAGNOSTIC TROUBLE CODE DEFINITIONS»(ref-126121-S19628632112001102400000).
2. Start engine. Ensure engine is at normal operating temperature. Using scan tool, command AIR pump and AIR solenoid ON. Using scan tool, observe HO2S bank 1 sensor 1 voltage. If voltage is less than 50 millivolts, see «DIAGNOSTIC AIDS.»(ref-126121-S13824243052001110300000) If voltage is 50 millivolts or more, turn ignition off and go to next step.
3. Check AIR system for pinched, kinked, restricted, or leaking pipes, hoses or fittings. Check for restricted AIR pump inlet duct/hose/filter. AIR pump is located if left front of engine compartment, mounted to subframe. Check for pinched, kinked, restricted, or leaking vacuum lines. Check components for heat damage. If heat damage is indicated, replace AIR shutoff valve on the bank that damage is present. Right (rear) AIR shutoff valve is mounted to front of right (rear) cylinder head. Left (front) AIR shutoff valve is mounted to rear of left (front) cylinder head. If any problems are found, repair as necessary. After repairs, go to step 42. If no problems are found, go to next step.
4. Turn ignition on. Using scan tool, command AIR pump and AIR solenoid on and off. If AIR pump turns on and off with each command, go to next step. If AIR pump does not turn on and off with each command, go to step 11.
5. Turn ignition on. Using scan tool, command AIR solenoid on and off. If AIR solenoid turns on and off with each command, go to next step. AIR solenoid is located next to intake manifold, near right (rear) cylinder head. If AIR solenoid does not turn on and off with each command, go to step 14.
6. Disconnect inlet pipe and/or hose from AIR shutoff valves. Using scan tool, command AIR pump and AIR solenoid on and off. If airflow is present at both hoses, go to next step. If airflow is not present at both hoses, go to step 16.
7. Disconnect vacuum supply hose from AIR solenoid. Connect a vacuum gauge to disconnect vacuum hose. Start engine and allow it to idle. If vacuum reading is more than 10 in. Hg, go to next step. If vacuum reading is 10 in. Hg or less, go to step 33. NOTE: Perform the following step for each AIR shutoff valve.
8. Reconnect vacuum hose to AIR solenoid. Disconnect vacuum hose from AIR shutoff valve. Connect a vacuum gauge to disconnect vacuum hose. Start engine and allow it to idle. Using scan tool, command AIR solenoid on. If scan tool indicates vacuum readings for both AIR solenoids is more than 10 in. Hg, go to next step. If scan tool indicates one or both vacuum readings is 10 in. Hg or less, go to step 26. NOTE: Perform the following step for each AIR shutoff valve.
9. Remove AIR shutoff valve. Connect a vacuum pump to AIR shutoff valve. Apply 10 in. Hg to valve. If vacuum holds for one minute, go to next step. If vacuum does not hold for one minute, go to step 37. NOTE: Perform the following step for each AIR shutoff valve.
10. Ensure vacuum is still applied to AIR shutoff valve. Attempt to blow air through inlet side of AIR shutoff valve. If air blows freely through AIR shutoff valve, go to step 27. If air does not blow freely through AIR shutoff valve, go to step 37.
11. Disconnect AIR pump relay. (Scheme 35) Turn ignition on. Using a test light connected to ground, probe Red and Pink/Black wires at AIR pump relay harness connector. If test light illuminates at both terminals, go to next step. If test light does not illuminate at both terminals, go to step 22.
12. Using a test light connected to positive battery voltage, probe Brown wire at AIR pump relay harness connector. Using scan tool, command AIR pump and AIR solenoid on and off. If test light turns on and off with each command, go to next step. If test light does not turn on and off with each command, go to step 17.
13. Connect a fused 3-amp jumper wire between Red wires at AIR pump relay harness connector. If AIR pump turns on, go to step 28. If AIR pump does not turn on, leave jumper wire connected and go to step 20.
14. Disconnect AIR solenoid. Ensure ignition is on. Using a test light connected to ground, probe terminal No. 1 (Pink/Black wire) at AIR solenoid harness connector. If test light illuminates, go to next step. If test light does not illuminate, go to step 23.
15. Using a test light connected to positive battery voltage, probe terminal No. 2 (Pink/Black wire) at AIR solenoid harness connector. Using scan tool, command AIR solenoid on and off. If test light turns on and off with each command, go to step 29. If test light does not turn on and off with each command, go to step 17.
16. Disconnect outlet pipe and/or hose from AIR pump. Using scan tool, command AIR pump and AIR solenoid on and off. If airflow is present at AIR pump outlet, go to step 36. If airflow is not present at AIR pump outlet, go to step 40.
17. If test light stays illuminated with each command, go to step 24. If test light does not stay illuminated with each command, go to step 25.
18. Ensure ignition is on. Disconnect AIR pump relay. (Scheme 35) If AIR pump stops operating, go to next step. If AIR pump does not stop operating, go to step 32.
19. Using a test light connected to positive battery voltage, probe Brown wire at AIR pump relay harness connector. Using scan tool, command AIR pump and AIR solenoid on and off. If test light turns on and off with each command, go to step 38. If test light does not turn on and off with each command, go to step 24.
20. Disconnect AIR pump connector. Connect a test light between Red and Black wires at AIR pump harness connector. If test light illuminates, go to step 30. If test light does not illuminate, leave jumper wire connected and go to next step.
21. Using a test light connected to ground, probe Red wire at AIR pump harness connector. If test light illuminates, go to step 35. If test light does not illuminate, go to step 34.
22. Check for an open in Red wire between AIR pump relay harness connector and AIR PUMP fuse in underhood fuse block. Also check for a short to ground in Red wire between AIR pump relay harness connector and AIR pump harness connector. If any problems are found, repair wiring as necessary. After repairs, go to step 42. If wiring is okay, go to step 40.
23. Check for an open or short to ground in Pink/Black wire between terminal No. 1 at AIR solenoid and fuse No. 11 (IGN 1 fuse) in underhood fuse block. If any problems are found, repair wiring as necessary. After repairs, go to step 42. If wiring is okay, go to step 39.
24. Turn ignition off. Disconnect PCM connectors. PCM is located in engine compartment, inside air filter housing. Using a test light connected to positive battery voltage, probe Brown wire at AIR pump relay harness connector. If test light illuminates, repair short to ground in Brown wire between AIR pump relay and PCM. After repairs, go to step 42. If test light does not illuminate, go to step 41.
25. Turn ignition off. Disconnect PCM connectors. PCM is located in engine compartment, inside air filter housing. Check for an open or short to voltage in Brown wire between AIR pump relay harness connector and terminal No. 75 at PCM C2 harness connector. (Scheme 29) If any problems are found, repair wiring as necessary. After repairs, go to step 42. If wiring is okay, go to step 31.
26. Check vacuum hose for leak or restriction. Repair vacuum hose as necessary. After repairs, go to step 42. If vacuum hose is okay, go to step 39.
27. Check for leaking or restricted AIR pipe/hose between shutoff valve and exhaust. If any problems are found, repair as necessary. After repairs, go to step 42. If no problems are found, check for restricted exhaust system. Repair exhaust as necessary. After repairs, go to step 42.
28. Check for poor connections at AIR relay connector. Repair connector as necessary. After repairs, go to step 42. If connector is okay, go to step 38.
29. Check for poor connections at AIR solenoid connector. Repair connector as necessary. After repairs, go to step 42. If connector is okay, go to step 39.
30. Check for poor connections at AIR pump connector. Repair connector as necessary. After repairs, go to step 42. If connector is okay, go to step 40.
31. Check for poor connections at PCM connectors. Repair connectors as necessary. After repairs, go to step 42. If connectors are okay, go to step 41.
32. Repair short to voltage in Red wire between AIR pump relay and AIR pump. After repairs, go to step 42.
33. Repair vacuum source. After repairs, go to step 42.
34. Repair open in Red wire between AIR pump relay and AIR pump. After repairs, go to step 42.
35. Repair open in Black wire between ground and AIR pump. After repairs, go to step 42.
36. Repair leak or restriction in AIR pipe and/or hose between AIR pump and shutoff valve. After repairs, go to step 42.
37. Replace shutoff valve. After repairs, go to step 42.
38. Replace AIR pump relay. After repairs, go to step 42.
39. Replace AIR solenoid. After repairs, go to step 42.
40. Replace AIR pump. After repairs, go to next step.
41. Replace PCM. Program replacement PCM. See «PROGRAMMING»(ref-126121-S25122286972001102400000). After repairs, go to next step.
42. Turn ignition off. Reconnect all disconnected connectors. Turn ignition on. Using scan tool, clear DTCs. Turn ignition off for 30 seconds. Start engine. Operate vehicle within conditions for running the DTC as specified in code enable criteria. If DTC runs and passes, go to next step. If DTC resets, go to step 2.
43. Using scan tool, check for any other DTCs that are set. If no other DTCs are set, test is complete. If any other DTCs are set, repair DTCs as necessary. See «DIAGNOSTIC TROUBLE CODE DEFINITIONS»(ref-126121-S19628632112001102400000).

1. Engine is cranking or running.
2. System voltage is 9-18 volts.
3. Driver changes commanded state.

1. Engine is cranking or running.
2. System voltage is 9-18 volts.
3. Driver changes commanded state.

1. DTC P0030, P0036, P0101, P0102, P0103, P0107, P0108, P0112, P0113, P0117, P0118, P0121, P0122, P0123, P0130, P0131, P0132, P0133, P0134, P0135, P0137, P0138, P0140, P0141, P0171, P0172, P0201-P0206, P0300, P0325, P0327, P0335, P0340, P0401, P0404, P0410, P0440, P0443, P0502, P0503, P0506, P0507, P1133, P1134, P1336, P1153, P1351-P1366 or P1441 is not set.
2. Engine speed is more than 1000 RPM for more than 44 seconds.
3. Ignition voltage is more than 9 volts.
4. Engine run time is more than 9 minutes.
5. Barometric pressure is more than 10.1 psi (75 kPa).
6. Engine coolant temperature is 160-248°F (71-120°C).
7. Intake air temperature is less than 176°F (80°C).
8. Engine is in closed loop fuel control.

1. DTC P0107, P0108, P0112, P0113, P0117, P0118, P0121, P0122, P0123, P0125, P0443, P0449, P0452, P0453, P1106, P1107, P1111, P1112, P1114, P1115, P1121 or P1122 is not set.
2. System voltage is 10-18 volts.
3. Barometric pressure is more than 10.1 psi (75 kPa).
4. Fuel level is 15-85 percent.
5. Engine coolant temperature is 39-86°F (4-30°C).
6. Intake air temperature is 39-86°F (4-30°C).
7. Start-up engine coolant temperature and intake air temperatures within 7°F (3°C) of each other.
8. Vehicle speed sensor is less than 80 MPH.

1. DTC P0107, P0108, P0112, P0113, P0117, P0118, P0121, P0122, P0123, P0125, P0443, P0449, P0452, P0453, P1106, P1107, P1112, P1114, P1115, P1121 or P1122 is not set.
2. System voltage is 10-18 volts.
3. Barometric pressure is more than 10.1 psi (75 kPa).
4. Fuel level is 15-85 percent.
5. Engine coolant temperature is 39-86°F (4-30°C).
6. Intake air temperature is 39-86°F (4-30°C).
7. Start-up engine coolant temperature and intake air temperature is within 7°F (3°C) of each other.
8. Vehicle speed sensor is less than 75 MPH.

1. Engine is running.
2. System voltage is 8-18 volts.

1. DTC P0107, P0108, P0112, P0113, P0117, P0118, P0121, P0122, P0123, P0125, P0440, P0442, P0443, P0449, P0452, P0453, P1106, P1107, P1111, P1112, P1114, P1115, P1121 or P1122 is not set.
2. System voltage is 10-18 volts.
3. Barometric pressure is more than 10.1 psi (75 kPa).
4. Fuel level is 30-85 percent.
5. Engine coolant temperature is 39-86°F (4-30°C).
6. Intake air temperature is 39-86°F (4-30°C).
7. Vehicle speed sensor is less than 75 MPH.

1. Engine speed is more than 400 RPM.
2. System voltage is 6-18 volts.

Only condition for running this DTC is ignition must be on.

Only condition for running this DTC is ignition must be on.

1. Engine speed is more than 425 RPM.
2. System voltage is 8-18 volts.

1. Engine speed is more than 425 RPM.
2. System voltage is 8-18 volts.

1. DTC P0101, P0102, P0103, P0107, P0108, P0112, P0113, P0117, P0118, P0121, P0122, P0123, P0125, P0171, P0172, P0201-P0206, P0300, P0335, P0385, P0401, P0403, P0404, P0405, P0440, P0442, P0443, P0446, P0449, P1106, P1107, P1111, P1112, P1114, P1115, P1121, P1122, P1336, P1372, P1380, P1381, P1404 or P1441 is not set.
2. Engine coolant temperature is more than 158°F (70°C).
3. Intake air temperature is more than -1°F (-18°C).
4. Ignition voltage is 9-18 volts.
5. Barometric pressure is more than 9.43 psi (65 kPa).
6. Engine run time is more than 2 minutes.
7. Throttle position sensor is less than 1.5 percent.
8. Vehicle speed sensor is less than 3 MPH.
9. Listed conditions are present for 10 seconds.

1. System voltage is less than 11 volts.
2. Engine speed is more than 1500 RPM.
3. Vehicle speed is less than 25 MPH.

DTC will set when PCM detects a system voltage out of range for 2 seconds.

1. Engine speed is more than 1500 RPM.
2. Vehicle speed is less than 25 MPH.

1. Engine speed is more than 1500 RPM.
2. Vehicle speed is less than 25 MPH.

Only condition for running this DTC is engine cranking or running.

Only condition for running this DTC is engine cranking.

1. Engine speed is more than 80 RPM.
2. System voltage is 9-18 volts.
3. PCM driver transitions from on to off or from off to on.

1. DTC P0121, P0122 or P0123 is not set.
2. Throttle angle is less than 2 percent when engine speed is less than 900 RPM.
3. Throttle angle is less than 90 percent when engine speed is less than 1000 RPM.

1. DTC P0121, P0122 or P0123 is not set.
2. Throttle angle is more than 6 percent when engine speed is more than 1000 RPM.

1. DTC P0101, P0102, P0103, P0117, P0118, P0125, P0502, P0503, P1114 or P1115 is not set.
2. Engine run time is more than 3 minutes.
3. Engine coolant temperature is more than 140°F (60°C).
4. Vehicle speed is less than 35 MPH.

1. DTC P0117, P0118, P0125, P0502, P0503, P1114 or P1115 is not set.
2. Vehicle speed is more than 25 MPH.
3. Engine run time is more than 10 seconds.

Only condition for running this DTC is engine run time is more than 3 seconds.

Only condition for running this DTC is engine run time is more than 3 seconds.

Only condition for running this DTC is ignition must be on.

Only condition for running this DTC is ignition must be on.

Note. HO2S bank 1 sensor 1 is located in right (rear) exhaust manifold.

1. DTC P0101, P0102, P0103, P0107, P0108, P0112, P0113, P0117, P0118, P0121, P0122, P0123, P0131, P0132, P0135, P0201-P0206, P0300, P0410, P0412, P0418, P0440, P0442, P0443, P0446, P0449, P1106, P1107, P1111, P1112, P1114, P1115, P1121, P1122, or P1441 is not set.
2. System voltage is more than 9 volts.
3. Engine run time is more than 4 minutes.
4. Engine speed is 1200-2300 RPM
5. Mass airflow is 5-35 gram/sec.
6. Engine coolant temperature is more than 167°F (75°C).
7. Closed loop fuel control is enabled.
8. Transmission not in Park, Reverse or Neutral.
9. Listed conditions are met for 3 seconds.

Note. HO2S bank 1 sensor 1 is located in right (rear) exhaust manifold.

1. DTC P0101, P0102, P0103, P0107, P0108, P0112, P0113, P0117, P0118, P0121, P0122, P0123, P0131, P0132, P0135, P0201-P0206, P0300, P0410, P0412, P0418, P0440, P0442, P0443, P0446, P0449, P1106, P1107, P1111, P1112, P1114, P1115, P1121, P1122, or P1441 is not set.
2. System voltage is more than 9 volts.
3. Engine run time is more than 4 minutes.
4. Engine speed is 1200-2300 RPM.
5. Mass airflow is 5-35 gram/sec.
6. Engine coolant temperature is more than 167°F (75°C).
7. Closed loop fuel control is enabled.
8. Transmission not in Park, Reverse or Neutral.
9. Listed conditions are met for 3 seconds.

1. DTC P0335, P0340, P0385 or P1372 is not set.
2. Engine coolant temperature is more than 158°F (70°C).

1. Ignition voltage is 9-17 volts.
2. Condition listed is met for less than one second.

Scheme 36

1. If powertrain diagnostic system check has already been performed, go to next step. If powertrain diagnostic system check has not been performed, go to «POWERTRAIN DIAGNOSTIC SYSTEM CHECK»(ref-126121-S16975031962001102400000) under DIAGNOSTIC SYSTEM CHECKS.
2. Start engine and allow it to idle. If engine will not start, diagnose no-start condition. See appropriate BASIC DIAGNOSTIC PROCEDURES article. If engine starts, use scan tool to monitor ignition control status for cylinder that is related to DTC that is set. See «DIAGNOSTIC TROUBLE CODE IDENTIFICATION»(ref-126121-S07698185362001110700000) table. If scan tool continuously indicates OK, no problems is indicated. Fault may be intermittent. If scan tool does not continuously indicate OK, go to next step. DIAGNOSTIC TROUBLE CODE IDENTIFICATION DTC Cylinder No. P1351 & P1361 1 P1352 & P1362 2 P1353 & P1363 3 P1354 & P1364 4 P1355 & P1365 5 P1356 & P1366 6
3. With engine idling, observe ignition misfire current counters on scan tool. If misfire current counters increment for all cylinders on one bank, go to next step. If misfire current counters do not increment for all cylinders on one bank, go to next step. If misfire current counters do not increment for all cylinders on one bank, go to step 8.
4. Remove and inspect fuse No. 15 (DIS fuse) from underhood fuse block. If fuse is blown, go to step 12. If fuse is okay, reinstall fuse and go to next step.
5. Turn ignition off. Disconnect Ignition Control Module (ICM) connector for affected cylinders. Left (front) ICM is for cylinders No. 2, 4 and 6. Right (rear) ICM is for cylinders No. 1, 3 and 5. Turn ignition on. Using a test light connected to ground, probe terminal "F" (Pink/White wire on ICM for bank 1 or Pink wire on ICM for bank 2) at disconnected ICM harness connector. see scheme 17 If test light illuminates, go to next step. If test light does not illuminate, go to step 13. NOTE: Left (front) ICM may also be referred to as ICM bank 1. Right (rear) ICM may also be referred to as ICM bank 2.
6. Connect a test light between terminal "A" (Black/White wire) and terminal "F" (Pink/White wire on ICM for bank 1 or Pink wire on ICM for bank 2) at disconnected ICM harness connector. If test light illuminates, go to next step. If test light does not illuminate, go to step 14.
7. Measure resistance between terminal "A" (Black/White wire) and terminal "B" (Red/Black wire) at disconnected ICM harness connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, go to step 15.
8. Turn ignition off. Remove fuse No. 1 (F/PMP) from rear fuse block. Rear fuse block is located underneath driver's side rear seat. Disconnect ICM connector for affected cylinder. Set DVOM to AC Hertz. Measure frequency of affected cylinder while cranking engine. If frequency is 2-20 Hz, go to step 19. If frequency is not 2-20 Hz, go to next step.
9. Ensure ignition is on. Measure voltage between ground and affected ignition control circuit terminal at ICM harness connector. See «IGNITION CONTROL CIRCUIT IDENTIFICATION»(ref-126121-S33750656592001092100000) table. If voltage is more than one volt, go to step 18. If voltage is one volt or less, go to next step. IGNITION CONTROL CIRCUIT IDENTIFICATION Cylinder No. ICM Terminal Wire Color 1 (1) C Purple 2 (2) E Red/White 3 (1) D Light Blue 4 (2) D Dark Green/White 5 (1) E Dark Green 6 (2) C Light Blue/White (1) Terminal is located at right (rear) ICM harness connector. (2) Terminal is located at left (front) ICM harness connector.
10. Turn ignition off. Disconnect PCM connectors. PCM is located in engine compartment, inside air filter housing. Check continuity of affected ignition control circuit terminal between ICM harness connector and PCM C1 harness connector. See «IGNITION CONTROL CIRCUIT IDENTIFICATION»(ref-126121-S33750656592001092100000) table. See WIRING DIAGRAMS article. If continuity exists, go to next step. If continuity does not exist, go to step 16.
11. Check continuity between ground and affected ignition control circuit terminal at ICM harness connector. If continuity exists, go to step 17. If continuity does not exist, go to step 24.
12. Check for short to ground in Pink/White wire (ICM for bank 1) or Pink wire (ICM for bank 2) between ICM and fuse No. 15 in underhood fuse block. Repair wiring as necessary. After repairs, go to step 26. If wiring is okay, go to step 21.
13. Repair open in Pink/White wire (ICM for bank 1) or Pink wire (ICM for bank 2) between ICM and fuse No. 15 in underhood fuse block. After repairs, go to step 26.
14. Repair open in Black/White wire between ICM and ground connection. Ground connection is located on transaxle housing. After repairs, go to step 26.
15. Repair open or high resistance in Red/Black wire between ICM and PCM. See WIRING DIAGRAMS article. After repairs, go to step 26.
16. Repair open or high resistance in appropriate ignition control circuit between ICM and PCM. After repairs, go to step 26.
17. Repair short to ground in appropriate ignition control circuit between ICM and PCM. After repairs, go to step 26.
18. Repair short to voltage in appropriate ignition control circuit between ICM and PCM. After repairs, go to step 26.
19. Turn ignition off. Check continuity between affected ignition control circuit and all other ignition control circuits at ICM harness connectors. If continuity exists, go to next step. If continuity does not exist, go to step 21.
20. Repair ignition control circuits that are shorted together. After repairs, go to step 26.
21. Check for poor connections at ICM connector. Repair connector as necessary. After repairs, go to step 26. If connector is okay, go to next step.
22. Remove ICM from coil assembly. If mating connector and seal come off with ICM, remove connector and seal from ICM and install onto coil assembly. With mating connector removed, ICM will have a female connector cavity with male pins. Reconnect harness to ICM. Connect ICM Tester (J 43298) to ICM. Crank engine and observe Light Emitting Diodes (LED) on ICM tester. If LEDs flash for all 3 cylinders, no problem is indicated. Fault may be intermittent. See INTERMITTENTS in appropriate TROUBLE SHOOTING - NO CODES article. If LEDs do not flash for all 3 cylinders, go to next step.
23. Replace ICM. After repairs, go to step 26.
24. Check for poor connections at PCM connectors. Repair connectors as necessary. After repairs, go to step 26. If connectors are okay, go to next step.
25. Replace PCM. Program replacement PCM. See «PROGRAMMING»(ref-126121-S25122286972001102400000). After repairs, go to next step.
26. Turn ignition off. Reconnect all disconnected connectors. Turn ignition on. Using scan tool, clear DTCs. Turn ignition off for 30 seconds. Start engine. Operate vehicle within conditions for running the DTC as specified in code enable criteria. If DTC runs and passes, go to next step. If DTC resets, go to step 2.
27. Using scan tool, check for any other DTCs that are set. If no other DTCs are set, test is complete. If any other DTCs are set, repair DTCs as necessary. See «DIAGNOSTIC TROUBLE CODE DEFINITIONS»(ref-126121-S19628632112001102400000).

1. Engine cranking or running.
2. PCM is operating in angle based mode of decoding engine position.

1. Engine load is less than 87 percent.
2. Engine speed is less than 5000 RPM.
3. Vehicle speed is more than 10 MPH.
4. A misfire DTC is occurring and requesting malfunction indicator light on.

1. Engine load is less than 87 percent.
2. Engine speed is less than 5000 RPM.
3. Vehicle speed is more than 10 MPH.
4. A misfire DTC is occurring and requesting MIL on.

1. DTC P0107, P0108, P0112, P0113, P0117, P0118, P0121, P0122, P0123, P0125, P0440, P0442, P0443, P0446, P0449, P0452, P0453, P1106, P1107, P1111, P1112, P1114, P1115, P1121 or P1122 is not set.
2. System voltage is 10-18 volts.
3. Barometric pressure is more than 10.1 psi (75 kPa).
4. Fuel level is 15-85 percent.
5. Engine coolant temperature at start-up is 39-86°F (4-30°C).
6. Intake air temperature at start-up is 39-86°F (4-30°C).
7. Vehicle speed sensor is less than 75 MPH.

Note. A/C refrigerant low temperature sensor may also be referred to as A/C low temperature sensor.

Only condition for running this DTC is ignition must be on.

Only condition for running this DTC is DIM must be powered. DTC will set if engine coolant temperature is 250°F (121°C) or more for 2 seconds.

Only condition for running this DTC is DIM must be powered.

1. DTC P1574 is not set.
2. Traction control and anti-lock brake systems have not failed.
3. Traction control and anti-lock brake systems are not active.
4. Non-drive wheel speed goes to more than 20 MPH and then does not go to less than 4 MPH.

Only condition for running this DTC is engine must be running.

Only condition for running this DTC is engine must be running.

Only condition for running this DTC is ignition must be on.

Only condition for running this DTC is ignition must be on.

Only condition for running this DTC is ignition must be on.

Only condition for running this DTC is ignition must be on.