Ngc Engine - Dtcs P0571 to P063A: Other Dodge Dakota III рестайлинг

Monitor Conditions

1. When Monitored: Ignition on.

Set Conditions

1. Set Condition: If the output of Brake Switch No. 1 to the PCM looks like it is not applied, while Brake Lamp Switch Output circuit is applied the fault will mature in 60ms. One Trip Fault.

Possible Causes

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .

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1. ACTIVE DTC NOTE: Make sure the Stop Lamp Switch is properly adjusted before continuing. NOTE: Make sure the Stop Lamp Switch is properly wired, such as (B29) Brake Switch No. 1 and (L50) Brake Lamp Switch Output circuit are not switched at the harness connector. Ignition on, engine not running. With a scan tool, select View DTCs. Is the DTC Active at this time? Yes Go to step 2 No Perform the INTERMITTENT CONDITION diagnostic procedure. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000)
2. (B29) BRAKE SWITCH NO. 1 SIGNAL SHORTED TO GROUND Turn the ignition off. Disconnect the Stop Lamp Switch harness connector. Disconnect the C3 PCM harness connector. Measure the resistance between ground and the (B29) Brake Switch No. 1 Signal circuit in the Stop Lamp Switch harness connector. Is the resistance below 100 Ohms? Yes Repair the short to ground in the (B29) Brake Switch No. 1 Signal circuit. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) No Go to step 3
3. (V32) BRAKE SWITCH NO. 2 SIGNAL CIRCUIT OPEN CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install PCM Pinout Box 8815 to perform diagnosis. Measure the resistance of the (V32) Brake Switch No. 2 Signal circuit from the Stop Lamp Switch harness connector to the appropriate terminal of PCM Pinout Box 8815. Is the resistance below 5.0 Ohms? Yes Go to step 4 No Repair the open in the (V32) Brake Switch No. 2 Signal circuit. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .
4. (V32) BRAKE SWITCH NO. 2 SIGNAL CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (V32) Brake Switch No. 2 Signal circuit in the Stop Lamp Switch harness connector. Is the resistance below 100 Ohms? Yes Repair the short to ground in the (V32) Brake Switch No. 2 Signal circuit. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) . No Go to step 5
5. (Z429) GROUND CIRCUIT OPEN Measure the resistance between ground and the (Z429) Ground circuit in the Stop Lamp Switch harness connector. Is the resistance below 5.0 Ohms? Yes Go to step 6 No Repair the open in the (Z429) Ground circuit. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .
6. STOP LAMP SWITCH Measure the resistance between the (Z429) Ground circuit terminal and the (B29) Brake Switch No. 1 Signal terminal in the Stop Lamp Switch. Next, measure the resistance between the (F202) Fused Ignition Switch circuit terminal and the (V32) Brake Switch No. 2 Signal circuit terminal in the Stop Lamp Switch. Apply and release the brake pedal while monitoring the Ohmmeter. Does the resistance change from below 5.0 Ohms to an open circuit for one or both of the measurements taken? Yes Go to step 7 No Verify that there is good pin to terminal contact in the Switch and Powertrain Control Module connectors. If OK, replace the Stop Lamp Switch. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .
7. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Stop Lamp Switch and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Switch and Powertrain Control Module connectors. Perform any Technical Service Bulletins that may apply. Were there any problems found? Yes Repair as necessary. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) . No Replace and program the Powertrain Control Module in accordance with the Service Information. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .

1. When Monitored: Ignition on.

1. Set Condition: When the PCM recognizes Brake Switch No. 1 is mechanically stuck in the low/on position. Two Trip Fault. Three Global Good Trips to Clear.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .

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1. ACTIVE DTC NOTE: Verify battery voltage is greater than 10 volts. Start the engine. Allow the engine to reach normal operating temperature. With a scan tool, select View DTCs. NOTE: It may be necessary to drive the vehicle to meet the conditions to set this DTC, try to repeat the conditions in which the fault originally set by reviewing the Freeze Frame data. Is the DTC Active or Pending at this time? Yes Go to step 2 No Perform the INTERMITTENT CONDITION diagnostic procedure. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .
2. STOP LAMP SWITCH Turn the ignition off. Remove the Stop Lamp Switch and disconnect the harness connector. Measure the resistance between the (Z429) Ground circuit terminal and the (B29) Brake Switch No. 1 Signal terminal in the Stop Lamp Switch. Measure the resistance between the (F202) Fused Ignition Switch circuit terminal and the (V32) Brake Switch No. 2 Signal terminal in the Stop Lamp Switch. Apply and release the stop lamp switch plunger while monitoring the Ohmmeter. Does the resistance change from below 5.0 Ohms to an open circuit? Yes Go to step 3 No Verify that there is good pin to terminal contact in the Switch and Powertrain Control Module connectors. If OK, replace the Stop Lamp Switch. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .
3. (B29) BRAKE SWITCH NO. 1 SIGNAL CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the C3 PCM harness connector. Measure the resistance between ground and the (B29) Brake Switch No. 1 Signal circuit in the Stop Lamp Switch harness connector. Is the resistance below 100 Ohms? Yes Repair the short to ground in the (B29) Brake Switch No. 1 Signal circuit. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) . No Go to step 4
4. (V32) BRAKE SWITCH NO. 2 SIGNAL CIRCUIT OPEN CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install PCM Pinout Box 8815 to perform diagnosis. Measure the resistance of the (V32) Brake Switch No. 2 Signal Output circuit from the Stop Lamp Switch harness connector to the appropriate terminal of PCM Pinout Box 8815. Is the resistance below 5.0 Ohms? Yes Go to step 5 No Repair the open in the (V32) Brake Switch No. 2 Signal circuit. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .
5. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Stop Lamp Switch and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Switch and Powertrain Control Module connectors. Perform any Technical Service Bulletins that may apply. Were there any problems found? Yes Repair as necessary. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) . No Replace and program the Powertrain Control Module in accordance with the Service Information. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .

1. When Monitored: Ignition on.

1. Set Condition: When the PCM recognizes Brake Switch No. 1 is stuck in the high/off position. Two Trip Fault. Three good trips to turn off the MIL.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .

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1. ACTIVE DTC Start the engine. Allow the engine to reach normal operating temperature. With a scan tool, select View DTCs. NOTE: It may be necessary to drive the vehicle to meet the conditions to set this DTC, try to repeat the conditions in which the fault originally set by reviewing the Freeze Frame data. Is the DTC Active or Pending at this time? Yes Go to step 2 No Perform the INTERMITTENT CONDITION diagnostic procedure. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .
2. STOP LAMP SWITCH Turn the ignition off. Disconnect the Stop Lamp Switch harness connector. Measure the resistance between the (Z429) Ground circuit terminal and the (B29) Brake Switch No. 1 Signal circuit terminal in the Stop Lamp Switch. Apply and release the Stop Lamp Switch while monitoring the Ohmmeter. Does the resistance change from below 5.0 Ohms to an open circuit? Yes Go to step 3 No Verify that there is good pin to terminal contact in the Switch and Powertrain Control Module connectors. If OK, replace the Stop Lamp Switch. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .
3. (B29) BRAKE SWITCH NO. 1 SIGNAL CIRCUIT OPEN Turn the ignition off. Disconnect the C3 PCM harness connector. CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install PCM Pinout Box 8815 to perform diagnosis. Measure the resistance of the (B29) Brake Switch No. 1 Signal circuit from the Stop Lamp Switch harness connector to the appropriate terminal of PCM Pinout Box 8815. Is the resistance below 5.0 Ohms? Yes Go to step 4 No Repair the open in the (B29) Brake Switch No. 1 Signal circuit. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .
4. (V32) BRAKE SWITCH NO. 2 SIGNAL CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (V32) Brake Switch No. 2 Signal circuit in the Stop Lamp Switch harness connector. Is the resistance below 100 Ohms? Yes Repair the short to ground in the (V32) Brake Switch No. 2 Signal circuit. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) . No Go to step 5
5. (Z429) GROUND CIRCUIT OPEN Measure the resistance between the (Z429) Ground circuit and ground in the Stop Lamp Switch harness connector. Is the resistance below 5.0 Ohms? Yes Go to step 6 No Repair the open in the (Z429) Ground circuit. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .
6. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Stop Lamp Switch and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Switch and Powertrain Control Module connectors. Perform any Technical Service Bulletins that may apply. Were there any problems found? Yes Repair as necessary. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) . No Replace and program the Powertrain Control Module in accordance with the Service Information. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .

Scheme 278

1. When Monitored: With the ignition key on.

1. Set Condition: Cruise switch voltage output is not out of range but it does not equal any of the values for any of the button positions.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .

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1. ACTIVE DTC Start the engine and allow it to idle for at least 60 seconds. WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts or fan. Do not wear loose clothing. Failure to follow these instructions may result in possible serious or fatal injury. NOTE: It may be necessary to test drive the vehicle and operate the speed control in order for this DTC to set. With a scan tool, select View DTCs. Is the DTC Active at this time? Yes Go to step 2 No Perform the INTERMITTENT CONDITION diagnostic procedure. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .
2. SPEED CONTROL SWITCH Turn the ignition off. Remove and disconnect the Speed Control Switches from the steering wheel in accordance with the Service Information. Measure the resistance across each Speed Control Switch. Monitor the Ohmmeter while pressing each function button on each switch. The following resistance specs are taken between terminals (V37) S/C Switch No. 1 Signal and (V937) S/C Switch Return circuits of the Switch when holding the switch button in the following position: Not pressing any switch - 20.5k Ohms On/Off - 0.47k Ohms Set - 5.49k Ohms Coast - 2.94k Ohms Cancel - 1.24k Ohms Resume/Accel - 15.4k Ohms Does the function on the Speed Control Switches have the correct resistance value? Yes Go to step 3 No Replace the Speed Control Switch that had the incorrect resistance value. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .
3. (V37) S/C SWITCH NO. 1 SIGNAL CIRCUIT SHORTED TO VOLTAGE Disconnect the C3 PCM harness connector. Ignition on, engine not running. Measure the voltage on the (V37) S/C Switch No. 1 Signal circuit in the Speed Control harness connector. Is there any voltage present? Yes Repair the short to voltage in the (V37) S/C Switch No. 1 Signal circuit. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) . No Go to step 4
4. CLOCKSPRING Turn the ignition off. Disconnect the upper and lower clockspring harness connectors in accordance with the Service Information. Measure the resistance of the (V37) S/C Switch No. 1 Signal circuit between the upper and lower clockspring harness connectors. Measure the resistance of the (V937) S/C Switch Return circuit between the upper and lower clockspring harness connectors. Is the resistance above 5.0 Ohms? Yes Replace the Clockspring in accordance with the Service Information. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) . No Go to step 5 NOTE: Connect the Clockspring harness connectors in accordance with the Service Information before continuing.
5. (V37) S/C SWITCH NO. 1 SIGNAL CIRCUIT OPEN NOTE: The measurement must be taken from both Speed Control Switch harness connectors. CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install PCM Pinout Box 8815 to perform diagnosis. Measure the resistance of the (V37) S/C Switch No. 1 Signal circuit from the Speed Control harness connector to the appropriate terminal of PCM Pinout Box 8815. Is the resistance below 5.0 Ohms for both measurements? Yes Go to step 6 No Repair the open in the (V37) S/C Switch No. 1 Signal circuit. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .
6. (V937) S/C SWITCH RETURN CIRCUIT OPEN NOTE: The measurement must be taken from both Speed Control Switch harness connectors. Measure the resistance of the (V937) S/C Switch Return circuit from the Speed Control harness connector to the appropriate terminal of PCM Pinout Box 8815. Is the resistance below 5.0 Ohms for both measurements? Yes Go to step 7 No Repair the open in the (V937) S/C Switch Return circuit. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .
7. (V37) S/C NO. 1 SWITCH SIGNAL CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (V37) S/C Switch No. 1 Signal circuit in the Speed Control harness connector. Is the resistance below 100 Ohms? Yes Repair the short to ground in the (V37) S/C Switch No. 1 Signal circuit. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) . No Go to step 8
8. (V37) S/C SWITCH NO. 1 SIGNAL CIRCUIT SHORTED TO THE (V937) S/C SWITCH RETURN CIRCUIT Measure the resistance between the (V37) S/C Switch No. 1 Signal circuit and the (V937) S/C Switch Return circuit in the Speed Control harness connector. Is the resistance below 5.0 Ohms? Yes Repair the short between the (V37) S/C Switch No. 1 Signal circuit and the (V937) Switch Return circuit. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) . No Go to step 9
9. SPEED CONTROL SWITCH VOLTAGE VALUES CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install PCM Pinout Box 8815 and PCM Pinout Box Adapter 8815-1 to perform diagnosis. Install the PCM Pinout Box 8815-1 on the C3 PCM harness connector. Connect the S/C Switch harness connectors. Connect the Clockspring harness connectors. Turn the ignition on. With a scan tool, monitor the S/C Switch voltage readings. Using a voltmeter check the voltage on the (V37) S/C Switch No. 1 Signal circuit and the (V38) S/C Switch No. 2 Signal circuit at the appropriate terminals of the PCM Pinout Box 8815. Monitor the voltmeter. With a scan tool, monitor the S/C Switch voltage readings. SWITCH POSITION SWITCH No. 1 VOLTAGE VALUE SWITCH No. 2 VOLTAGE VALUE NO SWITCHES PRESSED 4.31 to 4.78 volts 4.31 to 4.78 volts ON/OFF PRESSED 0.59 and 1.13 volts 3.53 and 3.92 volts RES/ACCEL PRESSED 3.88 to 4.17 volts 2.04 to 2.47 volts SET PRESSED 3.16 to 3.56 volts 1.17 to 1.56 volts COAST PRESSED 2.57 to 2.94 volts 0.77 to 1.09 volts CANCEL PRESSED 1.59 to 1.99 volts 2.84 to 3.25 volts Compare the voltage readings on the voltmeter to what the scan tool displayed. Are the voltage readings out of the listed specification and is there less than a 0.2 of a volt difference between the voltmeter switch values and the scan tool switch value? Yes Verify that there is good pin to terminal contact in the Switch and Powertrain Control Module connectors. If OK, replace the Speed Control Switch. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) . No Go to step 10
10. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Speed Control Switch and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Switch and Powertrain Control Module connectors. Perform any Technical Service Bulletins that may apply. Were there any problems found? Yes Repair as necessary. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) . No Replace and program the Powertrain Control Module in accordance with the Service Information. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .

1. When Monitored: With the ignition key on.

1. Set Condition: Speed control switch input No. 1 is below the minimum acceptable voltage at the PCM. One trip fault.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .

1. When Monitored: With the ignition key on.

1. Set Condition: Speed control switch input above the maximum acceptable voltage at the PCM. One trip fault.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .

1. When Monitored: Ignition on.

1. Set Condition: Cruise Switch inputs are not coherent with each other. Example: PCM is reading Switch No. 1 as Accel and Switch No. 2 as Coast at the same time. One trip fault.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .

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1. ACTIVE DTC Ignition on, engine not running. NOTE: This DTC is a two trip fault. If the scan tool indicates a one trip failure, the possible cause may have been the customer pressing both switches simultaneously. Test drive the vehicle and activate the Speed Control system. If the DTC matures to an active fault a repair is necessary. Ask the customer if it is possible that two buttons were pressed at the same time before this DTC set. If this is the case, no repair is necessary. Start the engine. Allow the engine to reach normal operating temperature. With a scan tool, select View DTCs. NOTE: It may be necessary to drive the vehicle to meet the conditions to set this DTC, try to repeat the conditions in which the fault originally set by reviewing the Freeze Frame data. Is the DTC Active or Pending at this time? Yes Go to step 2 No Perform the INTERMITTENT CONDITION diagnostic procedure. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .
2. SPEED CONTROL ON/OFF SWITCH With the scan tool, monitor the Speed Control Switch voltage. Disconnect the Speed Control On/Off Switch harness connector. Did the voltage change to above 4.8 volts? Yes Replace the Speed Control On/Off Switch. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) . No Go to step 3
3. SPEED CONTROL RESUME/ACCEL SWITCH With the scan tool, monitor the Speed Control Switch voltage. Disconnect the Speed Control Resume/Accel Switch harness connector. Did the voltage change to above 4.8 volts? Yes Replace the Speed Control Resume/Accel Switch. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) . No Go to step 4
4. SPEED CONTROL SWITCHES Turn the ignition off. Remove and disconnect the Speed Control Switches from the steering wheel in accordance with the Service Information. Measure the resistance across each Speed Control Switch. Monitor the Ohmmeter while pressing each function button on each switch. The following resistance specs are taken between terminals (V38) S/C Switch No. 2 Signal and (V937) S/C Switch Return circuits of the Switch when holding the switch button in the following position. On/Off - 8.87k Ohms Set - 0.825k Ohms Coast - 0.47k Ohms Cancel - 3.92k Ohms Resume/Accel - 1.87k Ohms The following resistance specs are taken between terminals (V37) S/C Switch No. 1 Signal and (V937) S/C Switch Return circuits of the Switch when holding the switch button in the following position On/Off - 0.47k Ohms Set - 5.49k Ohms Coast - 2.94k Ohms Cancel - 1.24k Ohms Resume/Accel - 15.4k Ohms
5. S/C SWITCH SIGNAL CIRCUIT SHORTED TO VOLTAGE Disconnect the C3 PCM harness connector. Ignition on, engine not running. Measure the voltage on the (V37) and (V38) S/C Switch Signal circuits at both Speed Control harness connectors. Is there any voltage present? Yes Repair the short to voltage in the (V37) or (V38) S/C Switch Signal circuit. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) . No Go to step 6
6. CLOCKSPRING Turn the ignition off. Disconnect the C1 and C3 Clockspring harness connectors in accordance with the Service Information. Measure the resistance of the (V37) and (V38) S/C Switch Signal circuits between the C1 and C3 Clockspring harness connectors. Measure the resistance of the (V937) S/C Switch Return circuit between the C1 and C3 Clockspring harness connectors. Is the resistance above 5.0 Ohms? Yes Replace the Clockspring in accordance with the Service Information. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) . No Go to step 7 NOTE: Connect the Clockspring harness connectors in accordance with the Service Information before continuing.
7. S/C SWITCH SIGNAL CIRCUIT OPEN CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install PCM Pinout Box 8815 to perform diagnosis. Measure the resistance of the (V37) and (V38) S/C Switch Signal circuits from both Speed Control harness connectors to the appropriate terminals of PCM Pinout Box 8815. Is the resistance below 5.0 Ohms for each measurement? Yes Go to step 8 No Repair the excessive resistance in the (V37) or (V38) S/C Switch Signal circuit. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .
8. (V937) S/C SWITCH RETURN CIRCUIT OPEN NOTE: The measurement must be taken from both Speed Control Switch harness connectors. Measure the resistance of the (V937) S/C Switch Return circuit from both Speed Control harness connector to the appropriate terminal of PCM Pinout Box 8815. Is the resistance below 5.0 Ohms for both measurements? Yes Go to step 9 No Repair the excessive resistance in the (V937) S/C Switch Return circuit. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .
9. S/C SWITCH SIGNAL CIRCUITS SHORTED TO THE (V937) S/C SWITCH RETURN CIRCUIT Measure the resistance between the (V937) S/C Switch Return circuit and both of the (V37) and (V38) S/C Switch Signal circuits in the Speed Control harness connector. Is the resistance below 5.0 Ohms? Yes Repair the short between the (V937) S/C Switch Return circuit and the (V37) or (V38) S/C Switch Signal circuit. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) . No Go to step 10
10. (V37) S/C SWITCH NO. 1 SIGNAL CIRCUIT SHORTED TO THE (V38) S/C SWITCH NO. 2 SIGNAL CIRCUIT Measure the resistance between the (V37) S/C Switch No. 1 Signal circuit and the (V38) S/C Switch No. 2 Signal circuit at both Speed Control harness connectors. Is the resistance below 100 Ohms for each circuit? Yes Repair the short between the (V38) S/C Switch No. 2 Signal circuit and the (V37) S/C Switch No. 1 Signal circuit. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) . No Go to step 11
11. S/C SWITCH SIGNAL CIRCUITS SHORTED TO GROUND Measure the resistance between ground and the (V37) and (V38) S/C Switch Signal circuits at both Switch harness connectors. Is the resistance below 100 Ohms? Yes Repair the short to ground in the (V37) or (V38) S/C Switch Signal circuit. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) . No Go to step 12
12. SPEED CONTROL SWITCH VOLTAGE VALUES CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install PCM Pinout Box 8815 and PCM Pinout Box Adapter 8815-1 to perform diagnosis. Install the PCM Pinout Box 8815-1 on the C3 PCM harness connector. Connect the S/C Switch harness connectors. Connect the Clockspring harness connectors. Turn the ignition on. With a scan tool, monitor the S/C Switch voltage readings. Using a voltmeter check the voltage on the (V37) S/C Switch No. 1 Signal circuit and the (V38) S/C Switch No. 2 Signal circuit at the appropriate terminals of the PCM Pinout Box 8815. Monitor the voltmeter. With a scan tool, monitor the S/C Switch voltage readings. SWITCH POSITION SWITCH No. 1 VOLTAGE VALUE SWITCH No. 2 VOLTAGE VALUE NO SWITCHES PRESSED 4.31 to 4.78 volts 4.31 to 4.78 volts ON/OFF PRESSED 0.59 and 1.13 volts 3.53 and 3.92 volts RES/ACCEL PRESSED 3.88 to 4.17 volts 2.04 to 2.47 volts SET PRESSED 3.16 to 3.56 volts 1.17 to 1.56 volts COAST PRESSED 2.57 to 2.94 volts 0.77 to 1.09 volts CANCEL PRESSED 1.59 to 1.99 volts 2.84 to 3.25 volts Compare the voltage readings on the voltmeter to what the scan tool displayed. Are the voltage readings out of the listed specification and is there less than a 0.2 of a volt difference between the voltmeter switch values and the scan tool switch values? Yes Verify that there is good pin to terminal contact in the Switch and Powertrain Control Module connectors. If OK, replace the Speed Control Switch. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) . No Go to step 13
13. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Speed Control Switch and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Switch and Powertrain Control Module connectors. Perform any Technical Service Bulletins that may apply. Were there any problems found? Yes Repair as necessary. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) . No Replace and program the Powertrain Control Module in accordance with the Service Information. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .

1. When Monitored: With the ignition key on.

1. Set Condition: Cruise switch voltage output is not out of range but it does not equal any of the values for any of the button positions. One trip fault.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .

1. When Monitored: With the ignition key on.

1. Set Condition: Speed control switch input No. 2 is below the minimum acceptable voltage at the PCM. One trip fault.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .

1. When Monitored: With the ignition key on.

1. Set Condition: Speed Control Switch No. 2 input above the maximum acceptable voltage at the PCM. One trip fault.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .

1. When Monitored: With the ignition on.

1. Set Condition: Internal Bus communication failure between processors. One Trip Fault. Three Global Good Trips to clear.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .

1. When Monitored: With the ignition on.

1. Set Condition: Internal checksum for software failed, does not match calculated value. One Trip Fault, Three Good Trips to clear.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .

1. When Monitored: Engine running.

1. Set Condition: When the Powertrain Control Module (PCM) recognizes an internal failure to communicate with the Camshaft Position Sensor (CMP) and Crankshaft Position Sensor (CKP) Sensor count periods are too short. One trip fault. ETC light is flashing.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .

1. When Monitored: When the Throttle Motor is powered.

1. Set Condition: When ASD reading does not return to ground within a set period of time of test activation, this fault sets. The test typically runs a couple of times per second, and is the reason why APP2 signal spikes to ground a couple of times per second in normal running. Reprogramming the module may not always fix this fault. One trip fault. ETC lamp will illuminate.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .

1. When Monitored: Throttle motor is powered and no matured faults related to APP Sensors.

1. Set Condition: When secondary software determines that APPS 1 and APPS 2 signals do not match for a period of time. One trip fault. ETC lamp will flash.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .

1. When Monitored: Throttle motor is powered and no matured faults related to TP Sensors.

1. Set Condition: When secondary software determines that TPS 1 and TPS 2 signals do not match for a period of time. One trip fault. ETC lamp will flash.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .

1. When Monitored: Throttle motor is powered and no matured faults related to the Engine Coolant Temp (ECT) Sensor.

1. Set Condition: When secondary software determines that the Coolant Temperature is implausible for a period of time. One trip fault. ETC lamp will flash.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .

1. When Monitored: Throttle motor is powered.

1. Set Condition: When secondary software determines that the customer requested output is not being achieved by the engine for a period of time. One trip fault. ETC lamp will flash.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .

1. When Monitored: Throttle motor is powered and no camshaft or crankshaft electrical signal related DTCs are set.

1. Set Condition: When secondary software determines that the engine speed is implausible for a period of time. One trip fault. ETC lamp will flash.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .

1. When Monitored: With the ignition on. Engine running.

1. Set Condition: When the PCM tries to regulate the generator field with no result during monitoring. One Trip Fault. Three good trips to turn off the MIL.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .

Scheme 292

Scheme 293

Scheme 294

Scheme 295

1. ACTIVE DTC Start the engine and allow it to reach operating temperature. WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts or fan. Do not wear loose clothing. Failure to follow these instructions may result in possible serious or fatal injury. Increase engine speed by pressing the accelerator pedal. Do not exceed 3500 RPM. With the scan tool, select View DTCs. Is the DTC Active at this time? Yes Go to step 2 No Perform the INTERMITTENT CONDITION diagnostic procedure. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .
2. GENERATOR OPERATION Turn the ignition off. Disconnect the Generator Field harness connector. Using a 12-volt test light connected to ground, probe the (K20) Generator Field Control circuit in the Generator Field harness connector. Ignition on, engine not running. NOTE: The DTC needs to be cleared before actuating the Generator Field, if the DTC is not cleared, the Generator Field may not be allowed to actuate. With the scan tool, actuate the Generator Field Control circuit. NOTE: The test light should be illuminated and bright proportional to the maximum duty cycle allowed by the scan tool. For example, if the scan tool allows 100% actuation, the brightness should be as bright as a direct connection to the battery. If the scan tool allows a maximum 25% actuation, the brightness should be 25% as bright as a direct connection to the battery. Does the test light illuminate brightly and flash on and off? Yes Replace the Generator. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) . No Go to step 3
3. (K20) GEN FIELD CIRCUIT SHORTED VOLTAGE Turn the ignition off. Disconnect the C2 PCM harness connector. Ignition on, engine not running. Measure the voltage on the (K20) Gen Field Control circuit in the Generator Field harness connector. Is there any voltage present? Yes Repair the short to voltage in the (K20) Gen Field Control circuit. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) . No Go to step 4
4. (K20) GEN FIELD CIRCUIT OPEN Turn the ignition off. CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install PCM Pinout Box 8815 to perform diagnosis. Measure the resistance of the (K20) Gen Field Control circuit from the Generator Field harness connector to appropriate terminal of the PCM Pinout Box 8815. Is the resistance below 5.0 Ohms? Yes Go to step 5 No Repair the open in the (K20) Gen Field Control circuit. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .
5. (K20) GEN FIELD CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (K20) Gen Field Control circuit in the Generator Field harness connector. Is the resistance below 100 Ohms? Yes Repair the short to ground in the (K20) Gen Field Control circuit. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) . No Go to step 6
6. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Generator and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Generator and Powertrain Control Module connectors. Perform any Technical Service Bulletins that may apply. Were there any problems found? Yes Repair as necessary. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) . No Replace and program the Powertrain Control Module in accordance with the Service Information. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .

1. When Monitored: Throttle motor is powered and no vehicle speed related DTCs have matured.

1. Set Condition: When secondary software determines that the vehicle speed is implausible for a period of time. One trip fault. ETC lamp will flash.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .

1. When Monitored: With the ignition on. Battery voltage greater than 10.4 volts.

1. Set Condition: An open or shorted condition is detected in the fuel pump relay control circuit. One Trip Fault. Three good trips to turn off the MIL.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .

Scheme 296

Scheme 297

Scheme 298

Scheme 299

1. ACTIVE DTC Ignition on, engine not running. With the scan tool, select View DTCs. Is the DTC Active at this time? Yes Go to step 2 No Perform the INTERMITTENT CONDITION diagnostic procedure. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .
2. FUEL PUMP RELAY Turn the ignition off. Remove the Fuel Pump Relay from the IPM. Measure the resistance of the Fuel Pump Relay Coil. Is the resistance between 70 to 90 Ohms? Yes Go to step 3 No Replace the Fuel Pump Relay. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .
3. INTERNAL FUSED B+ CIRCUIT Ignition on, engine not running. Using a 12-volt test light connected to ground, probe the Internal Fused B+ circuit. Does the test light illuminate brightly? Yes Go to step 4 No Repair the open or short to ground in the Internal Fused B+ circuit. Inspect the related fuse and repair as necessary. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .
4. (F202) FUSED IGNITION SWITCH OUTPUT CIRCUIT Ignition on, engine not running. Using a 12-volt test light connected to ground, probe the (F202) Fused Ignition Switch Output circuit. Does the test light illuminate brightly? Yes Go to step 5 No Repair the open or short to ground in the (F202) Fused Ignition Switch Output circuit. Inspect the related fuse and repair as necessary. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .
5. (K31) FUEL PUMP RELAY CONTROL CIRCUIT OPEN Turn the ignition off. Disconnect the C3 PCM harness connector. CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install PCM Pinout Box 8815 to perform diagnosis. Measure the resistance of the (K31) Fuel Pump Relay Control circuit from the IPM to the appropriate terminal of PCM Pinout Box 8815. Is the resistance below 5.0 Ohms? Yes Go to step 6 No Repair the open in the (K31) Fuel Pump Relay Control circuit. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000)
6. (K31) FUEL PUMP RELAY CONTROL CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (K31) Fuel Pump Relay Control circuit in the IPM. Is the resistance below 100 Ohms? Yes Repair the short to ground in the (K31) Fuel Pump Relay Control circuit. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) . No Go to step 7
7. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Fuel Pump Module and the Powertrain Control Module. Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Fuel Pump Module and Powertrain Control Module connectors. Perform any Technical Service Bulletins that may apply. Were there any problems found? Yes Repair as necessary. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) . No Replace and program the Powertrain Control Module in accordance with the Service Information. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .

1. When Monitored: At initialization.

1. Set Condition: The VIN has not been programmed into the PCM. One Trip Fault. Three good trips to turn off the MIL.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .

1. When Monitored: Ignition on.

1. Set Condition: Odometer is not programed into the PCM. One Trip Fault. Three good trips to turn off the MIL.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .

1. When Monitored: Ignition on.

1. Set Condition: The SKIM Key information has not been programmed into the PCM. One Trip Fault. Three good trips to turn off the MIL.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .

1. When Monitored: The engine running. The engine speed greater than 1157 RPM.

1. Set Condition: The PCM recognizes the alternator output voltage is less than the Battery feed circuit voltage. One trip failure. The Generator light will illuminate. The fault will be checked again on the next key cycle.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .

Scheme 300

Scheme 301

1. ACTIVE DTC NOTE: Inspect the vehicle for aftermarket accessories that may exceed the Generator System output. NOTE: The battery must be fully charged. NOTE: The Generator belt tension and condition must be checked before continuing. Ignition on, engine not running. With a scan tool, select View DTCs. Start the engine. Allow the idle to stabilize. With the scan tool, select View DTCs. Is the DTC Active at this time? Yes Go to step 2 No Perform the INTERMITTENT CONDITION diagnostic procedure. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .
2. EXCESSIVE RESISTANCE IN THE (A803) GENERATOR SENSE CIRCUIT Turn the ignition off. Disconnect the Generator harness connector. Disconnect the C1 PCM harness connector. CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install PCM Pinout Box 8815 to perform diagnosis. Measure the resistance of the (A803) Generator Sense circuit from the Generator harness connector to the appropriate terminal of PCM Pinout Box 8815. Is the resistance below 5.0 Ohms? Yes Go to step 3 No Repair the excessive resistance in the (A803) Generator Sense circuit. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .
3. (A803) GENERATOR SENSE CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (A803) Generator Sense circuit at the Generator harness connector. Is the resistance below 100 Ohms? Yes Repair the short to ground in the (A803) Generator Sense circuit. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) . No Go to step 4
4. GENERATOR OPERATION Connect the C1 PCM harness connector. Using a 12-volt test light connected to ground, probe the (K20) Generator Field Control circuit in the Generator Field harness connector. Ignition on, engine not running. NOTE: The DTC needs to be cleared before actuating the Solenoid, if the DTC is not cleared, the Solenoid may not be allowed to actuate. With a scan tool, actuate the Generator Field Driver. NOTE: The test light should be illuminated and bright proportional to the maximum duty cycle allowed by the scan tool. For example, if the scan tool allows 100% actuation, the brightness should be as bright as a direct connection to the battery. If the scan tool allows a maximum 25% actuation, the brightness should be 25% as bright as a direct connection to the battery. Does the test light illuminate brightly and flash on and off? Yes Replace the Generator. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) . No Go to step 5
5. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Generator and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Generator and Powertrain Control Module connectors. Perform any Technical Service Bulletins that may apply. Were there any problems found? Yes Repair as necessary. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) . No Replace and program the Powertrain Control Module in accordance with the Service Information. Perform the POWERTRAIN VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-352681-S03115589192010010600000) .