Dtcs P1501 to P2110: Other Dodge Nitro I

Monitor Conditions

1. When Monitored: Ignition on and vehicle moving. Cruise is learned and customer is trying to use the Cruise.

Set Conditions

1. Set Condition: The PCM recognizes rear wheel speed is greater than front wheel speed. One trip fault.

Possible Causes

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. When Monitored: Ignition on and vehicle moving. Brake pedal must not be applied.

1. Set Condition: The PCM recognizes front axle speed is greater than rear axle speed. One trip fault.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. When Monitored: Ignition on. In plant mode only.

1. Set Condition: PCM recognizes the Brake Pedal could not electrically indicate the applied (On) position with both switch inputs. One trip fault.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 367

Scheme 368

1. ACTIVE DTC NOTE: Make sure the Stop Lamp Switch is adjusted properly before continuing. Ignition on, engine not running. 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. STOP LAMP SWITCH OPERATION NOTE: Inspect the relate Fuse. Turn the ignition off. Disconnect the Stop Lamp Switch harness connector. Measure the resistance between the (Z910) Ground circuit terminal and the (B15) Brake Signal 1 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 open circuit when pressing and releasing the brake pedal switch? Yes Go To 3 . No Replace the Stop Lamp Switch. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
3. STOP LAMP SWITCH OPERATION Measure the resistance between the (F943) Fused Ignition Switch terminal and the (B16) Brake Signal 2 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 open circuit when pressing and releasing the Stop Lamp Switch? Yes Go To 4 . No Replace the Stop Lamp Switch. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
4. (B15) BRAKE SIGNAL 1 CIRCUIT OPEN 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 Miller Special Tool #8815 to perform diagnosis. Measure the resistance of the (B15) Brake Signal 1 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 (B15) Brake Signal 1 circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
5. (B16) BRAKE SIGNAL 2 CIRCUIT OPEN 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 6 . No Repair the open in the (B16) Brake Signal 2 circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
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. 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. When Monitored: Ignition on, In plant mode passed the Applied test.

1. Set Condition: PCM recognizes the Brake Pedal could not electronically indicate the released (Off) position with both switches. If P1572 sets, P1573 will also set. One trip fault.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 369

Scheme 370

1. ACTIVE DTC NOTE: Make sure the Stop Lamp Switch is adjusted properly before continuing. Ignition on, engine not running. 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. STOP LAMP SWITCH OPERATION NOTE: Inspect the relate Fuse. Turn the ignition off. Disconnect the Stop Lamp Switch harness connectors. Measure the resistance between the (Z910) Ground circuit terminal and the (B15) Brake Signal 1 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 when pressing and releasing the brake switch? Yes Go To 3 . No Replace the Stop Lamp Switch. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
3. STOP LAMP SWITCH OPERATION Measure the resistance between the (F943) Fused Ignition Switch circuit terminal and the (B16) Brake Signal 2 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 when pressing and releasing the Stop Lamp switch? Yes Go To 4 . No Replace the Stop Lamp Switch. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
4. (B16) BRAKE SIGNAL 2 CIRCUIT SHORTED TO VOLTAGE Disconnect the C3 PCM harness connector. Ignition on, engine not running. Measure the voltage on the (B16) Brake Signal 2 circuit in the Stop Lamp Switch harness connector. Is there any voltage present? Yes Repair the short to voltage in the (B16) Brake Signal 2 circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 5 .
5. (B15) BRAKE SIGNAL 1 CIRCUIT SHORTED TO GROUND Turn the ignition off. 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 6 .
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. 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) .

Scheme 371

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.

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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 the switch in two positions 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 button was held in two positions 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 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 4.8 volts? Yes Replace the Speed Control Switch. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 3 .
3. SPEED CONTROL SWITCHES 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 on each switch. The following resistance specs are taken between terminals (V72) S/C Signal 2 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 - 8.87 kohms Set - 0.825 kohms Coast - 0.47 kohms Cancel - 3.92 kohms Resume/Accel - 1.87 kohms 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 - 20.5 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 Switch have the correct resistance value? Yes Go To 4 . No Replace the Speed Control Switch that had the incorrect resistance value. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
4. (V71) S/C SIGNAL 1 CIRCUIT SHORTED TO VOLTAGE Disconnect the C3 PCM harness connector. Measure the voltage on the (V71) S/C Signal 1 circuit at the Speed Control 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 5 .
5. (V72) S/C SIGNAL 2 CIRCUIT SHORTED TO VOLTAGE Measure the voltage on the (V72) S/C Signal 2 circuit at the Speed Control 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 6 .
6. (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 circuits from the Speed Control harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms for each measurement? Yes Go To 7 . No Repair the excessive resistance in the (V71) S/C Signal 1 circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
7. (V72) S/C SIGNAL 2 CIRCUIT OPEN Measure the resistance of the (V72) S/C Signal 2 circuit from the Speed Control harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms for each measurement? Yes Go To 8 . No Repair the excessive resistance in the (V72) S/C Signal 2 circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
8. (V937) S/C RETURN CIRCUIT OPEN NOTE: The measurement must be taken from both Speed Control Switch harness connectors. Measure the resistance of the (V937) S/C Return circuit at the Speed Control harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms for both measurements? Yes Go To 9 . No Repair the excessive resistance in the (V937) S/C Return circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
9. (V71) S/C SIGNAL 1 CIRCUIT SHORTED TO THE (V937) S/C RETURN CIRCUIT Measure the resistance between the (V937) S/C Return circuit and both of the (V71) S/C Signal 1 circuit in the S/C Switch harness connector. Is the resistance below 5.0 ohms? Yes Repair the short between the (V937) S/C Return circuit and the (V71) S/C Switch Signal 1 circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 10 .
10. (V72) S/C SIGNAL 2 CIRCUIT SHORTED TO THE (V937) S/C RETURN CIRCUIT Measure the resistance between the (V937) S/C Return circuit and both of the (V72) S/C Signal 2 circuit in the S/C Switch harness connector. Is the resistance below 5.0 ohms? Yes Repair the short between the (V937) S/C Return circuit and the (V72) S/C Switch Signal 2 circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 11 .
11. (V71) S/C SIGNAL 1 CIRCUIT SHORTED TO THE (V72) S/C SIGNAL 2 CIRCUIT Measure the resistance between the (V71) S/C Signal 1 circuit and the (V72) S/C Signal 2 circuit at the Speed Control harness connector. Is the resistance below 100 ohms for each circuit? Yes Repair the short between the (V72) S/C Signal 2 circuit and the (V71) S/C Signal 1 circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 12 .
12. (V71) S/C SWITCH SIGNAL 1 CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (V71) S/C Switch Signal 1 circuit at the S/C Switch harness connector. 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 13 .
13. (V72) S/C SWITCH SIGNAL 2 CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (V72) S/C Switch Signal 2 circuit at the S/C 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 14 .
14. 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 Switch and Powertrain Control Module connectors. Replace the Speed Control Switch if no problems are found in the connectors. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 15 .
15. 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. When Monitored: Ignition on and battery voltage greater than 10 volts.

1. Set Condition: The PCM has not been programmed.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. When Monitored: Ignition on and battery voltage greater than 10 volts.

1. Set Condition: This DTC sets if the engine coolant temp does not drop enough or drops too much during engine off time. This DTC may also set if the controller timer is inaccurate. Two Trip Fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. When Monitored: Ignition on.

1. Set Condition: When the PCM recognizes the Primary 5-volt Supply circuit voltage is varying too much too quickly. One Trip Fault. ETC light is flashing.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

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1. ACTIVE DTC NOTE: Improperly installed aftermarket accessories can cause this DTC to set. Check for any improperly installed aftermarket accessories before continuing with this test. 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. 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. (K855) PRIMARY 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the C2 PCM harness connector. Disconnect all the Sensors that share the (K855) Primary 5-volt Supply circuit. NOTE: This code can be caused by the improper installation of after market accessories that may be causing excessive noise on the (K855) 5-volt Supply circuit. Measure the resistance between ground and the (K855) Primary 5-volt Supply circuit in the CKP Sensor harness connector. Is the resistance below 100 ohms? Yes Repair the short to ground in the (K855) Primary 5-volt Supply circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 3 .
3. SENSOR SHORTED TO GROUND Connect the C2 PCM harness connector and all the previously disconnected Sensors except for the CKP Sensor harness connector. Ignition on, engine not running. Measure the voltage on the (K855) Primary 5-volt Supply circuit at the Throttle Body harness connector. NOTE: You must Turn the Ignition Off when disconnecting any of the Sensor harness connectors and Turn the Ignition On to check the voltage readings. While monitoring the voltage, disconnect each Sensor harness connector that shares the (K855) Primary 5-volt Supply circuit, one at a time. Does the voltage increase above 4.5 volts when disconnecting any of the Sensor harness connectors? Yes Verify that there is good pin to terminal contact in the Related Sensor and the Powertrain Control Module connectors. If OK, replace the Sensor that causes the (K855) Primary 5-volt Supply circuit voltage to increase when disconnected. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 4 .
4. 5-VOLT SENSOR Turn the ignition off. Connect all the previously disconnected Sensors except for the CKP Sensor harness connector. Ignition on, engine not running. Measure the voltage on the (K855) Primary 5-volt Supply circuit at the CKP Sensor harness connector. Is the voltage between 4.8 and 5.2 volts? Yes Verify that there is good pin to terminal contact in the Related Sensor and the Powertrain Control Module connectors. If OK, replace the Crank Position Sensor. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 5 .
5. (K855) PRIMARY 5-VOLT SUPPLY SHORTED TO VOLTAGE Turn the ignition off. Disconnect the C2 PCM harness connector. Disconnect all the Sensors that share the (K855) Primary 5-volt Supply circuit. Ignition on, engine not running. Measure the voltage on the (K855) Primary 5-volt Supply circuit in the CKP Sensor harness connector. Is there any voltage present? Yes Repair the short to voltage in the (K855) Primary 5-volt Supply circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 6 .
6. (K855) PRIMARY 5-VOLT SUPPLY CIRCUIT OPEN Turn the ignition off. Reconnect all the sensors that were disconnected in the previous step except for the CKP Sensor 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 Miller Special Tool #8815 to perform diagnosis. Measure the resistance in the (K855) Primary 5-volt Supply circuit from the Sensor harness connector to the appropriate terminal of special tool #8815. It may be necessary to perform this test from every sensor that uses the (K855) Primary 5-volt Supply circuit. Is the resistance below 5.0 ohms? Yes Go To 7 . No Repair the open in the (K855) Primary 5-volt Supply circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
7. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Related Sensors 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 Related Sensor and the 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) .

Scheme 386

1. When Monitored: Ignition on.

1. Set Condition: When the PCM recognizes the Auxiliary 5-volt Supply circuit voltage is varying too much to quickly. One Trip Fault. ETC light is flashing.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

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1. ACTIVE DTC NOTE: Improperly installed aftermarket accessories can cause this DTC to set. Check for any improperly installed aftermarket accessories before continuing with this test. 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. 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. (K857) AUXILIARY 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the C1 PCM harness connector. Disconnect all the Sensors that share the (K857) Auxiliary 5-volt Supply circuit. NOTE: This code can be caused by the improper installation of after market accessories that may be causing excessive noise on the (K857) 5-volt Supply circuit. Measure the resistance between ground and the (K857) Auxiliary 5-volt Supply circuit at the CMP Sensor harness connector. Is the resistance below 100 ohms? Yes Repair the short to ground in the (K857) Auxiliary 5-volt Supply circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 3 .
3. SENSOR SHORTED TO GROUND Connect the C1 PCM harness connector and all the previously disconnected Sensors except for the CMP Sensor harness connector. Ignition on, engine not running. Measure the voltage on the (K857) Auxiliary 5-volt Supply circuit in the CMP Sensor harness connector. NOTE: You must Turn the Ignition OFF when disconnecting any of the Sensor harness connectors and Turn the Ignition On to check the voltage readings. While monitoring the voltage, disconnect each Sensor harness connector that shares the (K857) Auxiliary 5-volt Supply circuit, one at a time. Does the voltage increase above 4.5 volts when disconnecting any of the Sensor harness connectors? Yes Verify that there is good pin to terminal contact in the Related Sensor and the Powertrain Control Module connectors. If OK, replace the Sensor that causes the (K857) Auxiliary 5-volt Supply circuit voltage to increase when disconnected. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 4 .
4. 5-VOLT SENSOR Turn the ignition off. Connect all the previously disconnected Sensors except for the CMP Sensor harness connector. Ignition on, engine not running. Measure the voltage on the (K857) Auxiliary 5-volt Supply circuit in the CMP Sensor harness connector. Is the voltage below 4.5 volts? Yes Go To 5 . No Verify that there is good pin to terminal contact in the Camshaft Position Sensor and the Powertrain Control Module connectors. If OK, replace the Cam Position Sensor. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
5. (K857) AUXILIARY 5-VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE Turn the ignition off. Disconnect the C1 PCM harness connector. Disconnect all the Sensors that share the (K857) Auxiliary 5-volt Supply circuit. Ignition on, engine not running. Measure the voltage on the (K857) Auxiliary 5-volt Supply circuit at the CMP Sensor harness connector. Is there any voltage present? Yes Repair the short to voltage in the (K857) Auxiliary 5-volt Supply circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 6 .
6. (K857) AUXILIARY 5-VOLT SUPPLY CIRCUIT OPEN Turn the ignition off. Reconnect all the sensors that were disconnected in the previous step except the CMP Sensor 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 Miller Special Tool #8815 to perform diagnosis. Measure the resistance in the (K857) Auxiliary 5-volt Supply circuit from the Sensor harness connector to the appropriate terminal of special tool #8815. It may be necessary to perform this test from every sensor that uses the (K857) Auxiliary 5-volt Supply circuit. Is the resistance below 5.0 ohms? Yes Go To 7 . No Repair the open in the (K857) Auxiliary 5-volt Supply circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
7. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Related Sensors 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 Related Sensor and the 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. When Monitored: Continuously with the ignition on.

1. Set Condition: An attempt to program/write to the internal EEPROM failed, Also checks at power down. One Trip Fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. When Monitored: Continuously with the ignition on.

1. Set Condition: The PCM Odometer mileage has not been programmed into the PCM.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. When Monitored: Engine running.

1. Set Condition: When the PCM recognizes an internal failure to communicate with the TIPM or the CMP and CKP Sensor count periods are too short. One trip fault. ETC light is flashing.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. When Monitored: With the engine run time above a calibrated value, battery voltage greater than 10.4 volts, ECT within a specific range, and the Short Runner Valve Assembly control active.

1. Set Condition: This PCM compares the circuit feedback to a calibrated closed range when the circuit is de-energized or to a calibrated open range when the circuit is energized. If the value is determined to be out of the calibrated range in either the de-energized or energized state for more than a calibrated amount of time, this DTC will set.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

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Scheme 394

1. DTC IS ACTIVE Turn the ignition on. With the scan tool, actuate the SRV Solenoid Control State. NOTE: It may be necessary to clear DTCs for the scan tool to allow the actuation. 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. EXCESSIVE RESISTANCE IN THE (F342) ASD RELAY OUTPUT CIRCUIT Turn the ignition off. Disconnect the Short Runner Valve Assembly harness connector. Turn the ignition on. With the scan tool, actuate the Auto Shutdown (ASD) Relay Control State. Using a 12-volt test light connected to ground, check the (F342) ASD Relay Output circuit in the Short Runner Valve Assembly harness connector. NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery. Is the test light illuminated and bright? Yes Go To 3 . No Repair the excessive resistance in the (F342) ASD Relay Output circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
3. (K236) SRV CONTROL CIRCUIT SHORTED TO VOLTAGE Turn the ignition off. Disconnect the C1 PCM harness connector. Turn the ignition on. Measure the voltage of the (K236) SRV Control circuit in the Short Runner Valve Assembly harness connector. Is there any voltage present? Yes Repair the short to voltage in the (K236) SRV Control circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 4 .
4. (K236) SRV CONTROL CIRCUIT SHORTED TO GROUND Turn the ignition off. Measure the resistance between ground and the (K236) SRV Control circuit in the Short Runner Valve Assembly harness connector. Is the resistance above 100 ohms? Yes Go To 5 . No Repair the short to ground in the (K236) SRV Control circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
5. EXCESSIVE RESISTANCE IN THE (K236) SRV CONTROL 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 (K236) SRV Control circuit between the Short Runner Valve Assembly harness connector and 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 (K236) SRV Control circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
6. SHORT RUNNER VALVE ASSEMBLY Connect the C1 PCM harness connector. Connect the Short Runner Valve Solenoid Assembly connector. Using a 12-volt test light connected to 12 volts, check the (K236) SRV Control circuit in the Short Runner Valve Solenoid Assembly harness connector. Turn the ignition on. With the scan tool, actuate the SRV Solenoid Control State to toggle. NOTE: If the DTC is active, the actuation test may not be allowed by the PCM. If may be necessary to clear the DTCs before starting the actuation. 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 accordingly during the actuation? Yes Verify that there is good pin to terminal contact in the SRV Solenoid Assembly and Powertrain Control Module connectors. If OK, replace the Short Runner Valve Solenoid. 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 SRV Assembly 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 Short Runner Valve Solenoid Assembly 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. When Monitored: With the ignition on and battery voltage greater than 10.4 volts.

1. Set Condition: The PCM detects that the PWM signal from the Short Runner Valve Position sensor is below the minimum acceptable value.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 395

Scheme 396

Scheme 397

Scheme 398

Scheme 399

Scheme 400

Scheme 401

Scheme 402

1. SRV PWM FEEDBACK Start the engine and allow it 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. NOTE: Diagnose and repair any system voltage or sensor supply voltage DTCs before continuing with this test. With the scan tool, read the SRV PWM Feedback. Is the SRV PWM Feedback less than 3%? Yes Go To 2 . No Refer to the «INTERMITTENT CONDITION»(ref-306207-S19641665412008120900000) Diagnostic Procedure.
2. SHORT RUNNER VALVE ASSEMBLY Turn the ignition off. Disconnect the Short Runner Valve Solenoid Assembly connector. Turn the ignition on. With the scan tool, read the SRV PWM Feedback. NOTE: The SRV PWM Feedback should be greater than 97% with the connector disconnected. Is the SRV PWM Feedback greater than 97%? Yes Verify that there is good pin to terminal contact in the Short Runner Valve Solenoid Assembly and Powertrain Control Module connectors. If OK, replace the Short Runner Valve Assembly in accordance with the Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 3 .
3. (F856) 5 VOLT SUPPLY CIRCUIT VOLTAGE Turn the ignition on. Measure the voltage of the (F856) 5 Volt Supply circuit in the Short Runner Valve Assembly harness connector. Is the voltage above 4.5 volts? Yes Go To 7 . No Go To 4 .
4. (F856) 5 VOLT SUPPLY CIRCUIT SHORTED TO GROUND Turn the ignition on. Disconnect the C1 PCM harness connector. Measure the resistance between ground and the (F856) 5 Volt Supply circuit in the Short Runner Valve Assembly harness connector. Is the resistance above 100 ohms? Yes Go To 5 . No Repair the short to ground in the (F856) 5 Volt Supply circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
5. (F856) 5 VOLT SUPPLY CIRCUIT SHORTED TO THE (K900) SENSOR GROUND CIRCUIT Measure the resistance between the (F856) 5 Volt Supply circuit and the (K900) Sensor Ground circuit in the Short Runner Valve Assembly harness connector. Is the resistance above 100 ohms? Yes Go To 6 . No Repair the short between the (F856) 5 Volt Supply circuit and the (K900) Sensor Ground circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
6. EXCESSIVE RESISTANCE IN THE (F856) 5 VOLT SUPPLY 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 (F856) 5 Volt Supply circuit between the Short Runner Valve Assembly harness connector and the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To 11 . No Repair the excessive resistance in the (F856) 5 Volt Supply circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
7. (K235) SRV SIGNAL CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the C1 and C2 PCM harness connectors. Measure the resistance between ground and the (K235) SRV Signal circuit in the Short Runner Valve Assembly harness connector. Is the resistance above 100 ohms? Yes Go To 8 . No Repair the short to ground in the (K235) SRV Signal circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
8. (K235) SRV SIGNAL CIRCUIT SHORTED TO THE (K900) SENSOR GROUND CIRCUIT Measure the resistance between the (K235) SRV Signal circuit and the (K900) Sensor Ground circuit in the Short Runner Valve Assembly harness connector. Is the resistance above 100 ohms? Yes Go To 9 . No Repair the short between the (K235) SRV Signal circuit and the (K900) Sensor Ground circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
9. EXCESSIVE RESISTANCE IN THE (K235) SRV SIGNAL 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 (K235) SRV Signal circuit between the Short Runner Valve Assembly harness connector and the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To 10 . No Repair the excessive resistance in the (K235) SRV Signal circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
10. EXCESSIVE RESISTANCE IN THE (K900) SENSOR GROUND 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 (K900) Sensor Ground circuit between the Short Runner Valve Assembly harness connector and the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To 11 . No Repair the excessive resistance in the (K900) Sensor Ground circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
11. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the SRV Assembly 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 Short Runner Valve Solenoid Assembly 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 (PCM) in accordance with the Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .

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

1. Set Condition: The PCM detects that the PWM signal from the Short Runner Valve Position sensor is above the maximum acceptable value.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 403

Scheme 404

Scheme 405

1. SRV PWM FEEDBACK Start the engine and allow it 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. NOTE: Diagnose and repair any system voltage or sensor supply voltage DTCs before continuing with this test. With the scan tool, read the SRV PWM Feedback. Is the SRV PWM Feedback greater than 97%? Yes Go To 2 . No Refer to the «INTERMITTENT CONDITION»(ref-306207-S19641665412008120900000) Diagnostic Procedure.
2. SHORT RUNNER VALVE ASSEMBLY Turn the ignition off. Disconnect the Short Runner Valve Solenoid Assembly connector. Connect a jumper wire between the (K900) Sensor Ground circuit and the (K235) SRV Signal circuit in the Short Runner Valve Solenoid Assembly harness connector. Turn the ignition on. With the scan tool, read the SRV PWM Feedback. NOTE: The SRV PWM Feedback should be less than 3% with the jumper wire in place. Is the SRV PWM Feedback less than 3%? Yes Verify that there is good pin to terminal contact in the Short Runner Valve Solenoid Assembly and Powertrain Control Module connectors. If OK, replace the Short Runner Valve Assembly in accordance with the Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 3 .
3. (F856) 5 VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE Turn the ignition off. Disconnect the C1 PCM harness connector. Turn the ignition on. Measure the voltage of the (F856) 5 Volt Supply circuit in the Short Runner Valve Assembly harness connector. Is there any voltage present? Yes Repair the short to voltage in the (F856) 5 Volt Supply circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 4 .
4. (K235) SRV SIGNAL CIRCUIT SHORTED TO VOLTAGE Measure the voltage of the (K235) SRV Signal circuit in the Short Runner Valve Assembly harness connector. Is there any voltage present? Yes Repair the short to voltage in the (K235) SRV Signal circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 5 .
5. (K235) SRV SIGNAL CIRCUIT SHORTED TO THE (F856) 5 VOLT SUPPLY CIRCUIT Measure the resistance between the (K235) SRV Signal circuit and the (F856) 5 Volt Supply in the Short Runner Valve Assembly harness connector. Is the resistance below 100 ohms? Yes Repair the short between the (K235) SRV Signal circuit and the (F856) 5 Volt Supply circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 6 .
6. (K235) SRV SIGNAL CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (K235) SRV Signal circuit in the Short Runner Valve Assembly harness connector. Is the resistance above 100 ohms? Yes Go To 7 . No Repair the short to ground in the (K235) SRV Signal circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
7. (K235) SRV SIGNAL 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 Miller Special Tool #8815 to perform diagnosis. Measure the resistance of the (K235) SRV Signal between the Short Runner Valve Assembly harness connector and the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To 8 . No Repair the open in the (K235) SRV Signal circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
8. (K900) SENSOR GROUND 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 (K900) Sensor Ground circuit between the Short Runner Valve Assembly harness connector and the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To 9 . No Repair the open in the (K900) Sensor Ground circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
9. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the SRV Assembly 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 Short Runner Valve Solenoid Assembly 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 (PCM) in accordance with the Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .

1. When Monitored: Ignition on.

1. Set Condition: The PCM recognizes the Throttle plate is stuck during extremely cold Ambient Temperature operation. The throttle plate goes through a de-icing procedure. If the throttle blade still doesn't move this fault sets. The MIL will not illuminate. The vehicle will be in Limp home condition, limiting RPM and vehicle speed.

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

1. Set Condition: The PCM detects that the PWM signal from the Manifold Tune Valve Position sensor is below the minimum acceptable value.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 406

Scheme 407

Scheme 408

Scheme 409

Scheme 410

Scheme 411

Scheme 412

1. MTV PWM FEEDBACK Start the engine and allow it 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. NOTE: Diagnose and repair any system voltage or sensor supply voltage DTCs before continuing with this test. With the scan tool, read the MTV PWM Feedback. Is the MTV PWM Feedback less than 3%? Yes Go To 2 . No Refer to the «INTERMITTENT CONDITION»(ref-306207-S19641665412008120900000) Diagnostic Procedure.
2. MANIFOLD TUNE VALVE ASSEMBLY Turn the ignition off. Disconnect the Manifold Tune Valve Solenoid Assembly connector. Turn the ignition on. With the scan tool, read the MTV PWM Feedback. NOTE: The MTV PWM Feedback should be greater than 97% with the connector disconnected. Is the MTV PWM Feedback greater than 97%? Yes Verify that there is good pin to terminal contact in the Manifold Tune Valve Assembly and Powertrain Control Module connectors. If OK, replace the Manifold Tune Valve Solenoid Assembly in accordance with the Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 3 .
3. (K857) 5 VOLT SUPPLY CIRCUIT VOLTAGE Measure the voltage of the (K857) 5 Volt Supply circuit in the Manifold Tune Valve Assembly harness connector. Is the voltage above 4.5 volts? Yes Go To 7 . No Go To 4 .
4. (K857) 5 VOLT SUPPLY CIRCUIT SHORTED TO GROUND Turn the ignition on. Disconnect the C1 and C2 PCM harness connectors. Measure the resistance between ground and the (K857) 5 Volt Supply circuit in the Manifold Tune Valve Assembly harness connector. Is the resistance above 100 ohms? Yes Go To 5 . No Repair the short to ground in the (K857) 5 Volt Supply circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
5. (K857) 5 VOLT SUPPLY CIRCUIT SHORTED TO THE (K900) SENSOR GROUND CIRCUIT Measure the resistance between the (K857) 5 Volt Supply circuit and the (K900) Sensor Ground circuit in the Manifold Tune Valve Assembly harness connector. Is the resistance above 100 ohms? Yes Go To 6 . No Repair the short between the (K857) 5 Volt Supply circuit and the (K900) Sensor Ground circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
6. EXCESSIVE RESISTANCE IN THE (K857) 5 VOLT SUPPLY 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 (K857) 5 Volt Supply circuit between the Manifold Tune Valve Assembly harness connector and the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To 11 . No Repair the excessive resistance in the (K857) 5 Volt Supply circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
7. (K234) MTV SIGNAL CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the C1 and C2 PCM harness connectors. Measure the resistance between ground and the (K234) MTV Signal circuit in the Manifold Tune Valve Assembly harness connector. Is the resistance above 100 ohms? Yes Go To 8 . No Repair the short to ground in the (K234) MTV Signal circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
8. (K234) MTV SIGNAL CIRCUIT SHORTED TO THE (K900) SENSOR GROUND CIRCUIT Measure the resistance between the (K234) MTV Signal circuit and the (K900) Sensor Ground circuit in the Manifold Tune Valve Assembly harness connector. Is the resistance above 100 ohms? Yes Go To 9 . No Repair the short between the (K234) MTV Signal circuit and the (K900) Sensor Ground circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
9. EXCESSIVE RESISTANCE IN THE (K234) MTV SIGNAL 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 (K234) MTV Signal circuit between the Manifold Tune Valve Assembly harness connector and the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To 10 . No Repair the excessive resistance in the (K234) MTV Signal circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
10. EXCESSIVE RESISTANCE IN THE (K900) SENSOR GROUND 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 (K900) Sensor Ground circuit between the Manifold Tune Valve Assembly harness connector and the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To 11 . No Repair the excessive resistance in the (K900) Sensor Ground circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
11. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Manifold Tune Valve Assembly 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 Manifold Tune Valve Assembly and Powertrain Control Module connectors. 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. When Monitored: With the ignition on and battery voltage greater than 10.4 volts.

1. Set Condition: The PCM detects that the PWM signal from the Manifold Tune Valve Position sensor is above the maximum acceptable value.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 413

Scheme 414

Scheme 415

Scheme 416

1. MTV PWM FEEDBACK Start the engine and allow it 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. NOTE: Diagnose and repair any system voltage or sensor supply voltage DTCs before continuing with this test. With the scan tool, read the MTV PWM Feedback. Is the MTV PWM Feedback greater than 97%? Yes Go To 2 . No Refer to the «INTERMITTENT CONDITION»(ref-306207-S19641665412008120900000) Diagnostic Procedure.
2. MANIFOLD TUNE VALVE ASSEMBLY Turn the ignition off. Disconnect the Manifold Tune Valve Assembly connector. Connect a jumper wire between the (K900) Sensor Ground circuit and the (K234) MTV Signal circuit in the Manifold Tune Valve Assembly harness connector. Turn the ignition on. With the scan tool, read the MTV PWM Feedback. NOTE: The MTV PWM Feedback should be less than 3% with the jumper wire in place. Is the MTV PWM Feedback less than 3%? Yes Verify that there is good pin to terminal contact in the Manifold Tune Valve Assembly and Powertrain Control Module connectors. If OK, replace the Manifold Tune Valve Solenoid Assembly in accordance with the Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 3 .
3. (K857) 5 VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE Turn the ignition off. Disconnect the C1 and C2 PCM harness connectors. Turn the ignition on. Measure the voltage of the (K857) 5 Volt Supply circuit in the Manifold Tune Valve Assembly harness connector. Is there any voltage present? Yes Repair the short to voltage in the (K857) 5 Volt Supply circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 4 .
4. (K234) MTV SIGNAL CIRCUIT SHORTED TO VOLTAGE Measure the voltage of the (K234) MTV Signal circuit in the Manifold Tune Valve Assembly harness connector. Is there any voltage present? Yes Repair the short to voltage in the (K234) MTV Signal circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 5 .
5. (K234) MTV SIGNAL CIRCUIT SHORTED TO THE (K857) 5 VOLT SUPPLY CIRCUIT Measure the resistance between the (K234) MTV Signal circuit and the (K857) 5 Volt Supply in the Manifold Tune Valve Assembly harness connector. Is the resistance below 100 ohms? Yes Repair the short between the (K234) MTV Signal circuit and the (K857) 5 Volt Supply circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 6 .
6. (K234) MTV 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 Miller Special Tool #8815 to perform diagnosis. Measure the resistance of the (K234) MTV Signal between the Manifold Tune Valve Assembly harness connector and the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To 7 . No Repair the open in the (K234) MTV Signal circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
7. (K900) SENSOR GROUND 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 (K900) Sensor Ground circuit between the Manifold Tune Valve Assembly harness connector and the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To 8 . No Repair the open in the (K900) Sensor Ground circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
8. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Manifold Tune Valve Assembly 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 Manifold Tune Valve Assembly and Powertrain Control Module connectors. 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) .

Scheme 417

1. When Monitored: With the engine running in closed loop mode, the ambient/battery temperature above -6.7° C (20° F) and altitude below 2590.8 m (8500 ft).

1. Set Condition: The conditions that cause this diagnostic to fail is when the upstream O2 sensor becomes biased from an exhaust leak, O2 sensor contamination, or some other extreme operating condition. The downstream O2 sensor is considered to be protected from extreme environments by the catalyst. The PCM monitors the downstream O2 sensor feedback control, called downstream fuel trim, to detect any shift in the upstream O2 sensor target voltage from nominal target voltage. The value of the downstream fuel trim is compared with the lean thresholds. Every time the value exceeds the calibrated threshold, a fail timer is increment and mass flow through the exhaust is accumulated. If the fail timer and accumulated mass flow exceed the fail thresholds, the test fails and the diagnostic stops running for that trip. If the test fails on consecutive trips, a DTC is set.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. When Monitored: With the engine running in closed loop mode, the ambient/battery temperature above -6.7° C (20° F) and altitude below 2590.8 m (8500 ft).

1. Set Condition: The conditions that cause this diagnostic to fail is when the upstream O2 sensor becomes biased from an exhaust leak, O2 sensor contamination, or some other extreme operating condition. The downstream O2 sensor is considered to be protected from extreme environments by the catalyst. The PCM monitors the downstream O2 sensor feedback control, called downstream fuel trim, to detect any shift in the upstream O2 sensor target voltage from nominal target voltage. The value of the downstream fuel trim is compared with the rich thresholds. Every time the value exceeds the calibrated threshold, a fail timer is increment and mass flow through the exhaust is accumulated. If the fail timer and accumulated mass flow exceed the fail thresholds, the test fails and the diagnostic stops running for that trip. If the test fails on consecutive trips, a DTC is set.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. When Monitored: With the engine running in closed loop mode, the ambient/battery temperature above -6.7° C (20° F) and altitude below 2590.8 m (8500 ft). Fuel level greater than 15%.

1. Set Condition: The conditions that cause this diagnostic to fail is when the upstream O2 sensor becomes biased from an exhaust leak, O2 sensor contamination, or some other extreme operating condition. The downstream O2 sensor is considered to be protected from extreme environments by the catalyst. The PCM monitors the downstream O2 sensor feedback control, called downstream fuel trim, to detect any shift in the upstream O2 sensor target voltage from nominal target voltage. The value of the downstream fuel trim is compared with the lean thresholds. Every time the value exceeds the calibrated threshold, a fail timer is increment and mass flow through the exhaust is accumulated. If the fail timer and accumulated mass flow exceed the fail thresholds, the test fails and the diagnostic stops running for that trip. If the test fails on consecutive trips, a DTC is set.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. When Monitored: With the engine running in closed loop mode, the ambient/battery temperature above -6.7° C (20° F) and altitude below 2590.8 m (8500 ft).

1. Set Condition: The conditions that cause this diagnostic to fail is when the upstream O2 sensor becomes biased from an exhaust leak, O2 sensor contamination, or some other extreme operating condition. The downstream O2 sensor is considered to be protected from extreme environments by the catalyst. The PCM monitors the downstream O2 sensor feedback control, called downstream fuel trim, to detect any shift in the upstream O2 sensor target voltage from nominal target voltage. The value of the downstream fuel trim is compared with the lean thresholds. Every time the value exceeds the calibrated threshold, a fail timer is increment and mass flow through the exhaust is accumulated. If the fail timer and accumulated mass flow exceed the fail thresholds, the test fails and the diagnostic stops running for that trip. If the test fails on consecutive trips, a DTC is set.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. When Monitored: With the ignition on and the ETC Motor is not in Limp Home mode.

1. Set Condition: When the PCM detects an internal error or a short between the ETC Motor- and ETC Motor + circuits in the ETC Motor Driver. One trip fault. ETC light is flashing.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 418

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Scheme 424

1. ACTIVE DTC Ignition on, engine not running. NOTE: When this DTC is Active the engine speed, torque, and vehicle speed are limited to a Limp in mode. NOTE: If the P2100 is intermittent, it is possible that the controller is overheating in extreme hot temperatures, and this is considered a normal protection operation. No repair is necessary. NOTE: Low battery voltage can also cause excessive current draw, in very hot and very cold ambient temperatures. Make sure the battery can pass a load test before continuing. With a scan tool, select View DTCs. Look closely at the temperatures at which this DTC set. Is the DTC Active at this time? Yes Go To 2 . No Refer to the «INTERMITTENT CONDITION»(ref-306207-S19641665412008120900000) Diagnostic Procedure.
2. THROTTLE PLATE INSPECTION Turn the ignition off. Remove the Air Cleaner Assembly from the Throttle Body. Check for any signs of a foreign material (ice or dirt) on the Throttle Plate or in the bore causing the Throttle Plate to stick. Were any signs of foreign material or scoring of the throttle plate or bore found? Yes Remove the debris if possible or replace the Throttle Body Assembly. Disconnect the Battery when replacing the Throttle Body Assembly. After installation is complete, use a scan tool and select the ETC RELEARN function. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 3 .
3. (K124) ETC MOTOR (+) SHORTED TO VOLTAGE Turn the ignition off. Disconnect the Throttle Body harness connector. Disconnect the C2 PCM harness connector. Ignition on, engine not running. 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 the diagnostics. Measure the voltage on the (K124) ETC Motor (+) at the appropriate terminal of special tool #8815. Is there any voltage present? Yes Repair the short to voltage on the (K124) ETC Motor (+). Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 4 .
4. (K126) ETC MOTOR (-) SHORTED TO VOLTAGE Measure the voltage on the (K126) ETC Motor (-) at the appropriate terminal of special tool #8815. Is there any voltage present? Yes Repair the short to voltage in the (K126) ETC Motor (-). Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 5 .
5. (K124) ETC MOTOR (+) SHORTED TO THE (K126) ETC MOTOR (-) Turn the ignition off. Measure the resistance between the (K124) ETC Motor (+) and the (K126) ETC Motor (-) at the appropriate terminals of special tool #8815. Is the resistance below 100 ohms? Yes Repair the short to between the (K124) ETC Motor (+) and the (K126) ETC Motor (-). Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 6 .
6. (K124) ETC MOTOR (+) OPEN Measure the resistance of the (K124) ETC Motor (+) from the Throttle Body harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To 7 . No Repair the open in the (K124) ETC Motor (+). Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
7. (K124) ETC MOTOR (+) SHORTED TO GROUND Measure the resistance between ground and the (K124) ETC Motor (+) between the appropriate terminals of special tool #8815. Is the resistance below 100 ohms? Yes Repair the short to ground in the (K124) ETC Motor (+). Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 8 .
8. (K126) ETC MOTOR (-) OPEN Measure the resistance of the (K126) ETC Motor (-) from the Throttle Body harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To 9 . No Repair the open in the (K126) ETC Motor (-). Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
9. (K126) ETC MOTOR (-) SHORTED TO GROUND Measure the resistance between ground and the (K126) ETC Motor (-) using the appropriate terminal of special tool #8815. Is the resistance below 100 ohms? Yes Repair the short to ground in the (K126) ETC Motor (-). Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 10 .
10. ETC MOTOR NOTE: Take the following measurement using special tool #8815 to avoid possible damage to the Throttle Body harness connector. Connect the Throttle Body harness connector. Measure the resistance of the ETC Motor between the (K124) ETC Motor (+) and the (K126) ETC Motor (-) at the appropriate terminals of special tool #8815. Is the resistance between 2.5 and 25 ohms at closed throttle? Yes Go To 11 . No Verify that there is good pin to terminal contact in the Throttle Body and the Powertrain Control Module connectors. If OK, replace the Throttle Body Assembly. Disconnect the Battery when replacing the Throttle Body Assembly. After installation is complete, use a scan tool and select the ETC RELEARN function. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
11. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Throttle Body 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 Throttle Body and the 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. When Monitored: With the vehicle running, ETC Motor not in Limp Home mode, and the TPS adaptation is complete.

1. Set Condition: The PCM recognizes too large of an error between the actual position of the Throttle Plate and the Set Point position. One trip fault and the code will set within 5 seconds. Three good trips to turn off the MIL ETC light is flashing.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. When Monitored: Ignition on.

1. Set Condition: Internal PCM failure. Module will attempt to reset, so you will be able to hear the throttle relearning. If the condition is continuous, the vehicle may not be driveable. One trip fault. ETC light is flashing.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. When Monitored: Ignition on and ETC motor is working.

1. Set Condition: When the PCM requests to limit engine speed if PWM is too high for 20.5 seconds and before P2118 sets. One trip fault and the code will set within 5 seconds. ETC light is illuminated.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.