Dtcs P0571 to P0633: Diagnosis Dodge Nitro I

Diagnostic Test

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 2 . No Refer to the «INTERMITTENT CONDITION»(ref-306207-S19641665412008120900000) Diagnostic Procedure.
2. STOP LAMP SWITCH NOTE: Inspect the related Fuse and Relay. Turn the ignition off. Remove the Stop Lamp Switch and disconnect the harness connector. Measure the resistance between the (Z910) Ground circuit terminal and the (B15) Brake Signal 1 terminal in the Stop Lamp Switch. Measure the resistance between the (F943) Fused Ignition Switch circuit terminal and the (B16) Brake Signal 2 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 3 . No Verify that there is good pin to terminal contact in the Switch and Control Module connectors. If OK, replace the Stop Lamp Switch. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
3. (B15) BRAKE SIGNAL 1 CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the C3 PCM harness connector. Measure the resistance between ground and the (B15) Brake Signal 1 circuit in the Stop Lamp Switch harness connector. Is the resistance below 100 ohms? Yes Repair the short to ground in the (B15) Brake Signal 1 circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 4 .
4. (B16) BRAKE SIGNAL 2 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 Miller Special Tool #8815 to perform diagnosis. Measure the resistance of the (B16) Brake Signal 2 circuit from the Stop Lamp Switch harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To 5 . No Repair the open in the (B16) Brake Signal 2 circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
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. Refer to any Technical Service Bulletins that may apply. Were there any problems found? Yes Repair as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Replace and program the Powertrain Control Module per Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .

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 can result in personal injury or death. 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 2 . No Refer to the «INTERMITTENT CONDITION»(ref-306207-S19641665412008120900000) Diagnostic Procedure.
2. SPEED CONTROL SWITCH Turn the ignition off. Remove and disconnect the Speed Control Switch from the steering wheel per Service Information. Measure the resistance across each Speed Control Switch. Monitor the ohmmeter while pressing each function button for each switch. The following resistance specs are taken between terminals (V71) S/C Signal 1 circuit and (V937) S/C Return circuit of the Switch when holding the switch button in the following positions. 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 Switch have the correct resistance value? Yes Go To 3 . No Replace the Speed Control Switch. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
3. SPEED CONTROL SWITCH With the scan tool, monitor the Speed Control Switch voltage. Disconnect the Speed Control Switch harness connector per Service Information. NOTE: The sensor voltage should be approximately 5.0 volts (plus or minus.1 volt) with the connector disconnected. Does the scan tool display the voltage as described above? Yes Replace the Speed Control Resume/Accel Switch. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 4 .
4. (V71) S/C SIGNAL 1 CIRCUIT SHORTED TO THE (V937) S/C RETURN CIRCUIT Turn the ignition off. Disconnect the C3 PCM harness connector. Measure the resistance between the (V937) S/C Return circuit and the (V71) S/C Signal 1 circuit at the S/C Switch harness connector. Is the resistance below 5.0 ohms? Yes Repair the short between the (V71) S/C Signal 1 circuit and the (V937) S/C Return circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 5 .
5. (V71) S/C SIGNAL 1 CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (V71) S/C Signal 1 circuit in the S/C Switch harness connector. To help determine the location of a short, disconnect the Steering Column Control Module C2 and C5 harness connectors and see if the short goes away. Is the resistance below 100 ohms? Yes Repair the short to ground in the (V71) S/C Signal 1 circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 6 .
6. EXCESSIVE RESISTANCE IN THE (V71) S/C SIGNAL 1 CIRCUIT 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 Miller Special Tool #8815 to perform diagnosis. Measure the resistance of the (V71) S/C Signal 1 circuits from both Speed Control harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To 7 . No Repair the excessive resistance in the (V71) S/C 1 Signal circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
7. 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 Miller Special Tool #8815 and #8815-1 to perform diagnosis. Install Miller Special Tool #8815-1 on the C3 PCM harness connector. Connect the S/C Switch harness connectors. Connect the SCCM 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 Signal 1 circuit and the (V38) S/C Signal 2 circuit at the appropriate terminals of the special tool #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 to 1.13 volts 3.53 to 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 Switches and Powertrain Control Module connectors. If OK, replace the Speed Control Switch. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 8 .
8. 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 Control Module connectors. Refer to any Technical Service Bulletins that may apply. Were there any problems found? Yes Repair as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Replace and program the Powertrain Control Module per Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .

1. ACTIVE DTC Ignition on, engine not running. With a scan tool, select View DTCs. NOTE: It may be necessary to drive the vehicle using the Speed Control for the fault to become Active. Is the DTC Active at this time? Yes Go To 2 . No Refer to the «INTERMITTENT CONDITION»(ref-306207-S19641665412008120900000) Diagnostic Procedure.
2. SPEED CONTROL SWITCHES Turn the ignition off. Remove and disconnect the Speed Control Switches from the steering wheel. 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 (V71) S/C Signal 1 and (V937) S/C Return circuits of the Switch when holding the switch button in the following position Not pressing any switch - 20.5 kohms On/Off - 0.47 kohms Set - 5.49 kohms Coast - 2.94 kohms Cancel - 1.24 kohms Resume/Accel - 15.4 kohms Does the function on the Speed Control Switches have the correct resistance value? Yes Go To 3 . No Replace the Speed Control Switch that had the incorrect resistance value. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
3. (V71) S/C SIGNAL 1 CIRCUIT SHORTED TO VOLTAGE Disconnect the C3 PCM harness connector. Ignition on, engine not running. Measure the voltage on the (V71) S/C Signal 1 circuit in the S/C Switch harness connector. Is there any voltage present? Yes Repair the short to voltage in the (V71) S/C Signal 1 circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 4 .
4. (V71) S/C SIGNAL 1 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 Miller Special Tool #8815 to perform diagnosis. Turn the ignition off. Measure the resistance of the (V71) S/C Signal 1 circuit from the Speed Control Switch to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms for each measurement? Yes Go To 5 . No Repair the open in the (V71) S/C Signal 1 circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
5. (V937) S/C RETURN CIRCUIT OPEN Measure the resistance of the (V937) S/C Return circuit from the S/C Switch harness connector to the appropriate terminals of special tool #8815. Is the resistance below 5.0 ohms for each measurement? Yes Go To 6 . No Repair the open in the (V937) S/C Return circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
6. 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 Miller Special Tool #8815 and #8815-1 to perform diagnosis. Install Miller Special Tool #8815-1 on the C3 PCM harness connector. Connect the S/C Switch harness connectors. Connect the SCCM 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 Signal 1 circuit and the (V38) S/C Signal 2 circuit at the appropriate terminals of the special tool #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 to 1.13 volts 3.53 to 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 «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 7 .
7. 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. Refer to any Technical Service Bulletins that may apply. Were there any problems found? Yes Repair as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Replace and program the Powertrain Control Module per Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .

1. ACTIVE DTC 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. Start the engine. Allow the engine to reach normal 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 can result in personal injury or death. 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 2 . No Refer to the «INTERMITTENT CONDITION»(ref-306207-S19641665412008120900000) Diagnostic Procedure.
2. SPEED CONTROL SWITCHES Turn the ignition off. Remove the Speed Control Switch from the steering wheel. Measure the resistance across the Speed Control Switch. Monitor the ohmmeter while pressing each function button on the switch. The following resistance specs are taken between terminals (V72) S/C Signal 2 circuit and (V937) S/C Return circuit of the Switch when holding the switch button in the following position. Not pressing any switch - 20.5k ohms 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 (V71) S/C Signal 1 and (V937) S/C Return circuit 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 Switch have the correct resistance value? Yes Go To 3 . No Replace the Speed Control Switch that had the incorrect resistance value. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
3. (V72) S/C SIGNAL 2 CIRCUIT SHORTED TO VOLTAGE Disconnect the C3 PCM harness connector. Ignition on, engine not running. Measure the voltage on the (V72) S/C Signal 2 circuit in the Switch harness connector. Is there any voltage present? Yes Repair the short to voltage in the (V72) S/C Signal 2 circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 4 .
4. (V72) S/C SIGNAL 2 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 Miller Special Tool #8815 to perform diagnosis. Measure the resistance of the (V72) S/C Signal 2 circuit from the Switch harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To 5 . No Repair the open in the (V72) S/C Signal 2 circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
5. (V937) S/C RETURN CIRCUIT OPEN Measure the resistance of the (V937) S/C Return circuit from the Switch harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To 6 . No Repair the open in the (V937) S/C Return circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
6. (V72) S/C SIGNAL 2 CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (V72) S/C Signal 2 circuit in the Switch harness connector. Is the resistance below 100 ohms? Yes Repair the short to ground in the (V72) S/C Signal 2 circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 7 .
7. (V72) S/C SIGNAL 2 CIRCUIT SHORTED TO THE (V937) S/C RETURN CIRCUIT Measure the resistance between the (V72) S/C Signal 2 circuit and the (V937) S/C Return circuit in the Switch harness connector. Is the resistance below 5.0 ohms? Yes Repair the short between the (V72) S/C Signal 2 circuit and the (V937) S/C Return circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 8 .
8. 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 Miller Special Tool #8815 and #8815-1 to perform diagnosis. Install Miller Special Tool #8815-1 on the C3 PCM harness connector. Connect the S/C Switch harness connectors. Connect the SCCM 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 Signal 1 circuit and the (V38) S/C Signal 2 circuit at the appropriate terminals of the special tool #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 to 1.13 volts 3.53 to 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 Switches and Powertrain Control Module connectors. Replace the Speed Control Switch if no problems were found in the connectors. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 9 .
9. 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. Refer to any Technical Service Bulletins that may apply. Were there any problems found? Yes Repair as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Replace and program the Powertrain Control Module per Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .

1. ACTIVE DTC Start the engine. Allow the engine to reach normal 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 can result in personal injury or death. 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 at this time? Yes Go To 2 . No Refer to the «INTERMITTENT CONDITION»(ref-306207-S19641665412008120900000) Diagnostic Procedure.
2. SPEED CONTROL SWITCH With the scan tool, monitor the Speed Control Switch voltage. Disconnect the Speed Control Switch harness connector. Did the voltage change to above 4.7 volts? Yes Replace the Speed Control Switch. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 3 .
3. (V72) S/C SIGNAL 2 CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the C3 PCM harness connector. Measure the resistance between ground and the (V72) S/C Signal 2 circuit in the Switch harness connector. Is the resistance below 100 ohms? Yes Repair the short to ground in the (V72) S/C Signal 2 circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 4 .
4. (V72) S/C SIGNAL 2 CIRCUIT SHORTED TO THE (V937) S/C SWITCH RETURN CIRCUIT Measure the resistance between the (V72) S/C Signal 2 circuit and the (V937) S/C Return circuit in the Switch harness connector. Is the resistance below 5.0 ohms? Yes Repair the short between the (V72) S/C Signal 2 circuit and the (V937) S/C Return circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 5 .
5. (V72) S/C SIGNAL 2 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 Miller Special Tool #8815 to perform diagnosis. Measure the resistance of the (V72) S/C Signal 2 circuit from the Switch harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To 6 . No Repair the excessive resistance in the (V72) S/C Signal 2 circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
6. 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 Miller Special Tool #8815 and #8815-1 to perform diagnosis. Install Miller Special Tool #8815-1 on the C3 PCM harness connector. Connect the S/C Switch harness connectors. Connect the SCCM 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 Signal 1 circuit and the (V38) S/C Signal 2 circuit at the appropriate terminals of the special tool #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 to 1.13 volts 3.53 to 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 Switches and Powertrain Control Module connectors. Replace the Speed Control Switch if no problems were found in the connectors. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 7 .
7. 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. Refer to any Technical Service Bulletins that may apply. Were there any problems found? Yes Repair as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Replace and program the Powertrain Control Module per Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .

1. ACTIVE DTC Ignition on, engine not running. With a scan tool, select View DTCs. NOTE: It may be necessary to drive the vehicle using the Speed Control for the fault to become Active. Is the DTC Active at this time? Yes Go To 2 . No Refer to the «INTERMITTENT CONDITION»(ref-306207-S19641665412008120900000) Diagnostic Procedure.
2. SPEED CONTROL SWITCHES Turn the ignition off. Remove and disconnect the Speed Control Switches from the steering wheel. 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 (V72) S/C Switch No.2 Signal and (V937) S/C Return circuit of the Switch when holding the switch button in the following position Not pressing any switch - 20.5 kohms On/Off - 0.47 kohms Set - 5.49 kohms Coast - 2.94 kohms Cancel - 1.24 kohms Resume/Accel - 15.4 kohms Does the function on the Speed Control Switches have the correct resistance value? Yes Go To 3 . No Replace the Speed Control Switch that had the incorrect resistance value. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
3. (V72) S/C SIGNAL 2 CIRCUIT SHORTED TO VOLTAGE Disconnect the C3 PCM harness connector. Ignition on, engine not running. Measure the voltage on the (V72) S/C Signal 2 circuit in the S/C Switch harness connector. Is there any voltage present? Yes Repair the short to voltage in the (V72) S/C Signal 2 circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 4 .
4. (V72) S/C SIGNAL 2 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 Miller Special Tool #8815 to perform diagnosis. Turn the ignition off. Measure the resistance of the (V72) S/C Signal 2 circuit from the Speed Control Switch to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms for each measurement? Yes Go To 5 . No Repair the open in the (V72) S/C Signal 2 circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
5. (V937) S/C RETURN CIRCUIT OPEN Measure the resistance of the (V937) S/C Return circuit from the S/C Switch harness connector to the appropriate terminals of special tool #8815. Is the resistance below 5.0 ohms for each measurement? Yes Go To 6 . No Repair the open in the (V937) S/C Return circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
6. 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 Miller Special Tool #8815 and #8815-1 to perform diagnosis. Install Miller Special Tool #8815-1 on the C3 PCM harness connector. Connect the S/C Switch harness connectors. Connect the SCCM 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 Signal 1 circuit and the (V38) S/C Signal 2 circuit at the appropriate terminals of the special tool #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 to 1.13 volts 3.53 to 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 «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 7 .
7. 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. Refer to any Technical Service Bulletins that may apply. Were there any problems found? Yes Repair as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Replace and program the Powertrain Control Module per Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .

1. POWERTRAIN CONTROL MODULE (PCM) NOTE: Diagnose any CMP or CKP Sensor faults before continuing. Check for intermittent loose CMP or CKP connections. The Powertrain Control Module is reporting internal errors, view repair to continue. Repair Replace and program the Powertrain Control Module per Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .

1. POWERTRAIN CONTROL MODULE (PCM) NOTE: Diagnose any CMP or CKP Sensor faults before continuing. Check for intermittent loose CMP or CKP connections. The Powertrain Control Module is reporting internal errors, view repair to continue. Repair Replace and program the Powertrain Control Module per Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .

1. ACTIVE DTC NOTE: Diagnose and repair any other DTCs set in the PCM before proceeding with this test. Turn the ignition on. With the scan tool, Clear DTCs in the Powertrain Control Module (PCM). 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 can result in personal injury or death. With the scan tool, select View DTCs. Is the DTC Active at this time? Yes Go To 2 . No Refer to the «INTERMITTENT CONDITION»(ref-306207-S19641665412008120900000) Diagnostic Procedure.
2. CHECKING THE PCM POWER AND GROUND CIRCUITS Perform the diagnostic procedure for «*CHECKING THE PCM POWER AND GROUND CIRCUITS»(ref-306215-S02197822282008120900000) . Were any problems found? Yes Repair the PCM power and ground circuit(s) as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 3 .
3. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the applicable component 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. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes Repair as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .

1. POWERTRAIN CONTROL MODULE (PCM) NOTE: Diagnose any CMP or CKP Sensor faults before continuing. Check for intermittent loose CMP or CKP connections. The Powertrain Control Module is reporting internal errors, view repair to continue. Repair Replace and program the Powertrain Control Module per Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .

1. PROGRAM THE POWERTRAIN CONTROL MODULE Verify the PCM is at the latest calibration (flash level). NOTE: An intermittent loss of power to the PCM without performing an ETC Relearn procedure may cause this DTC to set. NOTE: Diagnose any other DTCs that may have set with the P060B. Flash the Powertrain Control Module per Service Information if any updates are available. Start the engine. Allow the engine to reach normal operating temperature. Operate the accelerator pedal. (do not exceed 3500 RPM) With a scan tool, select View DTCs. Does this DTC reset by itself? Yes Replace and reprogram the Powertrain Control Module per Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Test Complete.

1. PROGRAM THE POWERTRAIN CONTROL MODULE Verify the PCM is at the latest calibration (flash level). NOTE: An intermittent loss of power to the PCM without performing an ETC Relearn procedure may cause this DTC to set. Flash the Powertrain Control Module per Service Information if any updates are available. Start the engine. Allow the engine to reach normal operating temperature. Operate the accelerator pedal. (do not exceed 3500 RPM) With a scan tool, select View DTCs. NOTE: Diagnose any other DTCs that may have set with the P060D. Does this DTC reset by itself? Yes Replace and reprogram the Powertrain Control Module per Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Test Complete.

1. PROGRAM THE POWERTRAIN CONTROL MODULE Verify the PCM is at the latest calibration (flash level). NOTE: An intermittent loss of power to the PCM without performing an ETC Relearn procedure may cause this DTC to set. Flash the Powertrain Control Module per Service Information if any updates are available. Start the engine. Allow the engine to reach normal operating temperature. Operate the accelerator pedal. (do not exceed 3500 RPM) With a scan tool, select View DTCs. NOTE: Diagnose any other DTCs that may have set with the P060E. Does this DTC reset by itself? Yes Replace and reprogram the Powertrain Control Module per Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Test Complete.

1. PROGRAM THE POWERTRAIN CONTROL MODULE NOTE: Diagnose any Engine Coolant Temperature Sensor DTCs before continuing. Verify the PCM is at the latest calibration (flash level). NOTE: An intermittent loss of power to the PCM without performing an ETC Relearn procedure may cause this DTC to set. Flash the Powertrain Control Module per Service Information if any updates are available. Start the engine. Allow the engine to reach normal operating temperature. Operate the accelerator pedal. (do not exceed 3500 RPM) With a scan tool, select View DTCs. NOTE: Diagnose any other DTCs that may have set with the P060F. Does this DTC reset by itself? Yes Replace and reprogram the Powertrain Control Module per Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Test Complete.

1. PROGRAM THE POWERTRAIN CONTROL MODULE NOTE: Check the engine for air/vacuum leaks and diagnose any Fuel System Lean/Rich as well as MAP Sensor DTCs before continuing. Verify the PCM is at the latest calibration (flash level). NOTE: An intermittent loss of power to the PCM without performing an ETC Relearn procedure may cause this DTC to set. Flash the Powertrain Control Module per Service Information if any updates are available. Start the engine. Allow the engine to reach normal operating temperature. Operate the accelerator pedal. (do not exceed 3500 RPM) With a scan tool, select View DTCs. NOTE: Diagnose any other DTCs that may have set with the P061A. Does this DTC reset by itself? Yes Replace and reprogram the Powertrain Control Module per Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Test Complete.

1. PROGRAM THE POWERTRAIN CONTROL MODULE NOTE: Diagnose any Camshaft Position and Crankshaft Position Sensor DTCs before continuing. Verify the PCM is at the latest calibration (flash level). NOTE: An intermittent loss of power to the PCM without performing an ETC Relearn procedure may cause this DTC to set. Flash the Powertrain Control Module per Service Information if any updates are available. Start the engine. Allow the engine to reach normal operating temperature. Operate the accelerator pedal. (do not exceed 3500 RPM) With a scan tool, select View DTCs. NOTE: Diagnose any other DTCs that may have set with the P061C. Does this DTC reset by itself? Yes Replace and reprogram the Powertrain Control Module per Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Test Complete.

Scheme 255

1. PROGRAM THE POWERTRAIN CONTROL MODULE Verify the PCM is at the latest calibration (flash level). NOTE: An intermittent loss of power to the PCM without performing an ETC Relearn procedure may cause this DTC to set. Flash the Powertrain Control Module per Service Information if any updates are available. Start the engine. Allow the engine to reach normal operating temperature. Operate the accelerator pedal. (do not exceed 3500 RPM) With a scan tool, select View DTCs. NOTE: Diagnose any other DTCs that may have set with the P062C. Does this DTC reset by itself? Yes Replace and reprogram the Powertrain Control Module per Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Test Complete.

1. PROGRAMMING VIN INTO THE PCM Ignition on, engine not running. Using the scan tool, program VIN into the PCM. Start the engine. NOTE: If the engine will not start, crank the engine over for 15 seconds. Crank at least 2 times with the ignition switch returning to the off position each time. Allow the engine to reach normal operating temperature. With the scan tool, select View DTCs. Does the DTC reset? Yes Replace and program the Powertrain Control Module per Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No The VIN has been successfully programmed into the PCM. Test is complete. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .

1. PROGRAMMING MILEAGE INTO THE PCM Ignition on, engine not running. With the scan tool, erase DTCs. Using a scan tool, program the mileage into the PCM. Start the engine. Allow the engine to reach normal operating temperature. With a scan tool, select View DTCs. Does the DTC reset? Yes Replace and program the Powertrain Control Module per Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No The mileage has been successfully programmed into the PCM. Test is complete. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .

1. PROGRAMMING SKIM KEY INTO THE PCM Ignition on, engine not running. With a scan tool, erase DTCs. Using the scan tool, program the SKIM Key information into the PCM. Start the engine. NOTE: If the engine will not start, crank the engine over for 15 seconds. Crank at least 2 times with the ignition switch returning to the off position each time. Allow the engine to reach normal operating temperature. With the scan tool, select View DTCs. Does the DTC reset? Yes Replace and program the Powertrain Control Module per Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No The SKIM KEY information has been successfully programmed into the PCM. Test is complete. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .