Dtcs P1414 to P2097: Other Dodge Magnum I

Monitor Conditions

1. When Monitored: Transition from 8 to 4 cylinder mode.

Set Conditions

1. Set Condition: The MDS fails to active and take place for cylinder 4.

Possible Causes

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 450

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Scheme 452

Scheme 453

Scheme 454

Scheme 455

1. 1) ACTIVE DTC Ignition on, engine not running. With a scan tool, read DTCs. Is the DTC active at this time? Yes Go To step 2) . No Refer to «INTERMITTENT CONDITION»(ref-246952-S29354200532007011000000) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
2. 2) MDS SOLENOID NO.4 Turn the ignition off. Gain access to the MDS Solenoid No.4. Disconnect the MDS Solenoid No.4 harness connector. Ignition on, engine not running. Turn off all accessories. Using a 12-volt test light connected to the (Z904) Ground circuit, probe the (K452) MDS Solenoid No.4 Control circuit. With a scan tool, actuate the MDS Solenoid 4. Does the 12-volt test light flash on and off? Yes Go To step 7) . No Go To step 3) .
3. 3) (Z904) GROUND CIRCUIT OPEN Turn the ignition off. Using a 12-volt test light connected to the 12-volts, probe the (Z904) Ground circuit in the MDS Solenoid No.4 harness connector. Does the test light illuminate brightly? Yes Go To step 4) . No Repair the open in the (Z904) Ground circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
4. 4) (K452) MDS SOLENOID NO.4 CONTROL CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the PCM harness connector. Measure the resistance between ground and the (K452) MDS Solenoid No.4 Control circuit in the MDS Solenoid No.4 harness connector. Is the resistance below 100 ohms? Yes Repair the short to ground in the (K452) MDS Solenoid No.4 Control circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 5) .
5. 5) (K452) MDS SOLENOID NO.4 CONTROL 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 (K452) MDS Solenoid No.4 Control circuit from the MDS Solenoid No.4 harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To step 6) . No Repair the open in the (K452) MDS Solenoid No.4 Control circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
6. 6) PCM NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary. Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits. Were there any problems found? Yes Repair as necessary. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Replace and program the Powertrain Control Module. Refer to «MODULE-POWERTRAIN CONTROL»(ref-246912-S21217387632007011000000) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
7. 7) MDS SOLENOID 4 Turn the ignition off. Remove the Intake Manifold per Service Information. Reconnect the Solenoid harness connector. Turn the ignition on. With the scan tool actuate the MDS Solenoid 4. Can you feel and hear the Solenoid Actuating? Yes Go To step 8) . No Remove the Solenoid and check for any debris that may be blocking the oil passages to the Solenoid. If the passages are clogged, clean the passages and replace the MDS Solenoid 4. If the passages are not clogged with debris, replace the MDS Solenoid 4.
8. 8) OIL PASSAGES RESTRICTED Turn the ignition off. Remove both Solenoids on Bank 2 of the engine block. Remove the Bank 2 Cylinder Head per Service Information. Remove the Lifters from the right engine bank. Inspect the oil passages to the Solenoids and from the Solenoids to the lifters. Are the passages blocked? Yes Clean the oil passages as necessary. If the entire engine is restricted disassembly of the entire engine block may be necessary. No Replace both sets of lifters if no other possible causes remain.

Scheme 456

For the Engine circuit diagram (Refer to ENGINE - SCHEMATICS AND DIAGRAMS) .

1. When Monitored: Transition from 8 to 4 cylinder mode.

1. Set Condition: The MDS fails to active and take place for cylinder 6.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 457

Scheme 458

Scheme 459

1. 1) ACTIVE DTC Ignition on, engine not running. With a scan tool, read DTCs. Is the DTC active at this time? Yes Go To step 2) . No Refer to «INTERMITTENT CONDITION»(ref-246952-S29354200532007011000000) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
2. 2) MDS SOLENOID NO.6 Turn the ignition off. Gain access to the MDS Solenoid No.6. Disconnect the MDS Solenoid No.6 harness connector. Ignition on, engine not running. Turn off all accessories. Using a 12-volt test light connected to the (Z904) Ground circuit, probe the (K453) MDS Solenoid No.6 Control circuit. With a scan tool, actuate the MDS Solenoid 6. Does the 12-volt test light flash on and off? Yes Go To step 7) . No Go To step 3) .
3. 3) (Z904) GROUND CIRCUIT OPEN Turn the ignition off. Using a 12-volt test light connected to the 12-volts, probe the (Z904) Ground circuit in the MDS Solenoid No.6 harness connector. Does the test light illuminate brightly? Yes Go To step 4) . No Repair the open in the (Z904) Ground circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
4. 4) (K453) MDS SOLENOID NO.6 CONTROL CIRCUIT SHORTED TO GROUND Disconnect the PCM harness connector. Turn the ignition off. Measure the resistance between ground and the (K453) MDS Solenoid No.6 Control circuit in the MDS Solenoid No.6 harness connector. Is the resistance below 100 ohms? Yes Repair the short to ground in the (K453) MDS Solenoid No.6 Control circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 5) .
5. 5) (K453) MDS SOLENOID NO.6 CONTROL 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 (K453) MDS Solenoid No.6 Control circuit from the MDS Solenoid No.6 harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To step 6) . No Repair the open in the (K453) MDS Solenoid No.6 Control circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
6. 6) PCM NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary. Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits. Were there any problems found? Yes Repair as necessary. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Replace and program the Powertrain Control Module. Refer to «MODULE-POWERTRAIN CONTROL»(ref-246912-S21217387632007011000000) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
7. 7) MDS SOLENOID 6 Turn the ignition off. Remove the Intake Manifold per Service Information. Reconnect the Solenoid connector. Turn the ignition on. With the scan tool actuate the MDS Solenoid 6. Can you feel and hear the Solenoid Actuating? Yes Go To step 8) . No Remove the Solenoid and check for any debris that may be blocking the oil passages to the Solenoid. If the passages are clogged, clean the passages and replace the MDS Solenoid 6. If the passages are not clogged with debris, replace the MDS Solenoid 6.
8. 8) OIL PASSAGES RESTRICTED Turn the ignition off. Remove both Solenoids on Bank 2 of the engine block. Remove the Bank 2 Cylinder Head per Service Information. Remove the Lifters from the right engine bank. Inspect the oil passages to the Solenoids and from the Solenoids to the lifters. Are the passages blocked? Yes Clean the oil passages as necessary. If the entire engine is restricted disassembly of the entire engine block may be necessary. No Replace both sets of lifters if no other possible causes remain.

Scheme 460

For the Engine circuit diagram (Refer to ENGINE - SCHEMATICS AND DIAGRAMS) .

1. When Monitored: Transition from 8 to 4 cylinder mode.

1. Set Condition: The MDS fails to active and take place for cylinder 7.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 461

Scheme 462

Scheme 463

1. 1) ACTIVE DTC Ignition on, engine not running. With a scan tool, read DTCs. Is the DTC active at this time? Yes Go To step 2) . No Refer to «INTERMITTENT CONDITION»(ref-246952-S29354200532007011000000) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
2. 2) MDS SOLENOID NO.7 Turn the ignition off. Gain access to the MDS Solenoid No.7. Disconnect the MDS Solenoid No.7 harness connector. Ignition on, engine not running. Turn off all accessories. Using a 12-volt test light connected to the (Z904) Ground circuit, probe the (K454) MDS Solenoid No.7 Control circuit. With a scan tool, actuate the MDS Solenoid 7. Does the 12-volt test light flash on and off? Yes Go To step 7) . No Go To step 3) .
3. 3) (Z904) GROUND CIRCUIT OPEN Turn the ignition off. Using a 12-volt test light connected to the 12-volts, probe the (Z904) Ground circuit in the MDS Solenoid No.7 harness connector. Does the test light illuminate brightly? Yes Go To step 4) . No Repair the open in the (Z904) Ground circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
4. 4) (K454) MDS SOLENOID NO.7 CONTROL CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the PCM harness connector. Measure the resistance between ground and the (K454) MDS Solenoid No.7 Control circuit in the MDS Solenoid No.7 harness connector. Is the resistance below 100 ohms? Yes Repair the short to ground in the (K454) MDS Solenoid No.7 Control circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 5) .
5. 5) (K454) MDS SOLENOID NO.7 CONTROL 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 (K454) MDS Solenoid No.7 Control circuit from the MDS Solenoid No.7 harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To step 6) . No Repair the open in the (K454) MDS Solenoid No.7 Control circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
6. 6) PCM NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary. Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits. Were there any problems found? Yes Repair as necessary. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Replace and program the Powertrain Control Module. Refer to «MODULE-POWERTRAIN CONTROL»(ref-246912-S21217387632007011000000) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
7. 7) MDS SOLENOID 7 Turn the ignition off. Remove the Intake Manifold per Service Information. Reconnect the Solenoid harness connector. Turn the ignition on. With the scan tool actuate the MDS Solenoid 7. Can you feel and hear the Solenoid Actuating? Yes Go To step 8) . No Remove the Solenoid and check for any debris that may be blocking the oil passages to the Solenoid. If the passages are clogged, clean the passages and replace the MDS Solenoid 7. If the passages are not clogged with debris, replace the MDS Solenoid 7.
8. 8) OIL PASSAGES RESTRICTED Turn the ignition off. Remove both Solenoids on Bank 1 of the engine block. Remove the Bank 1 Cylinder Head per Service Information. Remove the Lifters from the left engine bank. Inspect the oil passages to the Solenoids and from the Solenoids to the lifters. Are the passages blocked? Yes Clean the oil passages as necessary. If the entire engine is restricted disassembly of the entire engine block may be necessary. No Replace both sets of lifters if no other possible causes remain.

Scheme 464

For the Engine circuit diagram (Refer to ENGINE - SCHEMATICS AND DIAGRAMS) .

1. When Monitored: Ignition on, vehicle moving. Speed control is learned and the speed control is trying to be activated.

1. Set Condition: The PCM recognizes rear wheel speed is greater than the front wheel speed.

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 the front wheel speed is greater than the rear wheel speed.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. When Monitored: Ignition on and the vehicle moving. Speed control is learned and the speed control is trying to be activated.

1. Set Condition: The PCM recognizes the rear wheel speed is greater than the front wheel speed.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

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

1. Set Condition: The PCM recognizes the front axle speed is greater than the rear wheel speed.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. When Monitored: Engine Running.

1. Set Condition: Using the oil pressure, oil temperature and other vital engine inputs the PCM can determine the engine oil viscosity. Incorrect viscosity will effect the operation of the MDS by delaying cylinder activation.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. When Monitored: Ignition on.

1. Set Condition: The PCM recognizes the Brake Switch #1 is mechanically stuck in the low/on position. One Trip Fault.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 465

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Scheme 467

1. 1) ACTIVE DTC NOTE: Make sure the Stop Lamp Switch is properly adjusted before continuing. NOTE: Make sure the Stop Lamp Switch is properly wired, such as (B15) Brake Switch No.1 and (B16) Brake Lamp Switch No.2 circuit are not switched at the harness connector. Ignition on, engine not running. With a scan tool, read DTCs. Is the DTC active at this time? Yes Go To step 2) . No Refer to «INTERMITTENT CONDITION»(ref-246952-S29354200532007011000000) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 4»(ref-246912-S04736048862007011000000) .
2. 2) (B15) BRAKE SWITCH NO.1 SIGNAL SHORTED TO GROUND Turn the ignition off. Disconnect the Stop Lamp Switch harness connector. Disconnect the PCM harness connectors. Measure the resistance between ground and the (B15) Brake Switch No.1 Signal circuit in the Stop Lamp Switch harness connector. Is the resistance below 100 ohms? Yes Repair the short to ground in the (B15) Brake Switch No.1 Signal circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 4»(ref-246912-S04736048862007011000000) . No Go To step 3) .
3. 3) (B16) BRAKE SWITCH NO.2 SIGNAL 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 Switch No.2 Signal circuit from the Stop Lamp Switch harness connector and the appropriate terminal of the special tool #8815. Is the resistance below 5.0 ohms? Yes Go To step 4) . No Repair the open in the (B16) Brake Switch No.2 Signal circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 4»(ref-246912-S04736048862007011000000) .
4. 4) (B16) BRAKE SWITCH NO.2 SIGNAL SHORT TO VOLTAGE Turn the ignition on. Measure the voltage of the Brake Switch No.2 Signal circuit in the Stop Lamp Switch harness connector. Does the voltmeter indicate voltage present? Yes Repair the short to voltage in the (B16) Brake Switch No.2 circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 4»(ref-246912-S04736048862007011000000) . No Go To step 5) .
5. 5) STOP LAMP SWITCH Remove the Stop Lamp Switch. Measure the resistance between terminals 1 and 2 of the Stop Lamp Switch. Next, measure the resistance between terminals 3 and 4 of the Stop Lamp Switch. Apply and release the brake pedal while monitoring the ohmmeter during both of the above steps. Does the resistance change from below 5.0 ohms to an open circuit for one or both of the measurements taken? Yes Go To step 6) . No Replace the Stop Lamp Switch. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 4»(ref-246912-S04736048862007011000000) .
6. 6) PCM NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary. Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits. Were there any problems found? Yes Repair as necessary. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 4»(ref-246912-S04736048862007011000000) . No Replace and program the Powertrain Control Module. Refer to «MODULE-POWERTRAIN CONTROL»(ref-246912-S21217387632007011000000) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 4»(ref-246912-S04736048862007011000000) .

1. When Monitored: Ignition on.

1. Set Condition: The PCM recognizes Brake Switch No.1 is stuck in the Off/high position. One Trip Fault.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 468

Scheme 469

Scheme 470

Scheme 471

1. 1) ACTIVE DTC NOTE: Make sure the Stop Lamp Switch is properly adjusted before continuing. NOTE: Make sure the Stop Lamp Switch is properly wired, such as (B15) Brake Switch No.1 and (B16) Brake Lamp Switch No.2 circuits are not switched at the harness connector. Ignition on, engine not running. With a scan tool, read DTCs. Is the DTC active at this time? Yes Go To step 2) . No Refer to «INTERMITTENT CONDITION»(ref-246952-S29354200532007011000000) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 4»(ref-246912-S04736048862007011000000) .
2. 2) (B15) BRAKE SWITCH NO.1 SIGNAL SHORTED TO GROUND Turn the ignition off. Disconnect the Stop Lamp Switch harness connector. Disconnect the PCM harness connectors. Measure the resistance between ground and the (B15) Brake Switch No.1 Signal circuit in the Stop Lamp Switch harness connector. Is the resistance below 100 ohms? Yes Repair the short to ground in the (B15) Brake Switch No.1 Signal circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 4»(ref-246912-S04736048862007011000000) . No Go To step 3) .
3. 3) (B15) BRAKE SWITCH NO.1 SIGNAL SHORT TO VOLTAGE Turn the ignition on. Measure the voltage of the (B15) Brake Switch No.1 Signal circuit in the Stop Lamp Switch harness connector. Does the voltmeter indicate voltage present? Yes Repair the short voltage in the (B15) Brake Switch No.1 Signal circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 4»(ref-246912-S04736048862007011000000) . No Go To step 4) .
4. 4) (B16) BRAKE SWITCH NO.2 SIGNAL SHORTED TO GROUND Turn the ignition off. Disconnect the Stop Lamp Switch harness connector. Disconnect the PCM harness connectors. Measure the resistance between ground and the (B16) Brake Switch No.2 Signal circuit in the Stop Lamp Switch harness connector. Is the resistance below 100 ohms? Yes Repair the short to ground in the (B16) Brake Switch No.2 Signal circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 4»(ref-246912-S04736048862007011000000) . No Go To step 5) .
5. 5) (B16) BRAKE SWITCH NO.2 SIGNAL 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 Switch No.2 Signal circuit from the Stop Lamp Switch harness connector and the appropriate terminal of the special tool #8815. Is the resistance below 5.0 ohms? Yes Go To step 6) . No Repair the open in the (B16) Brake Switch No.2 Signal circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 4»(ref-246912-S04736048862007011000000) .
6. 6) (F202) FUSED IGNITION SWITCH OUTPUT (RUN-START) OPEN Re connect the PCM harness connector. Turn the ignition on. Using a 12-volt test light connected to ground, probe the (F202) Fused Ignition Switch Output circuit in the Stop Lamp Switch harness connector. Does the test light illuminate brightly? Yes Go To step 7) . No Repair the open in the (F202) Fused Ignition Switch Output circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 4»(ref-246912-S04736048862007011000000) .
7. 7) (Z912) GROUND CIRCUIT OPEN Using the 12-Volt test light connect to battery voltage, probe the (Z912) Ground circuit in the Stop Lamp Switch harness connector. Does the test light illuminate brightly? Yes Go To step 8) . No Repair the open in the (Z912) Ground circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 4»(ref-246912-S04736048862007011000000) .
8. 8) STOP LAMP SWITCH Remove the Stop Lamp Switch. Measure the resistance between terminals 1 and 2 of the Stop Lamp Switch. Next, measure the resistance between terminals 3 and 4 of the Stop Lamp Switch. Apply and release the brake pedal while monitoring the ohmmeter during both of the above steps. Does the resistance change from below 5.0 ohms to an open circuit for one or both of the measurements taken? Yes Go To step 9) . No Replace the Stop Lamp Switch. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 4»(ref-246912-S04736048862007011000000) .
9. 9) PCM NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary. Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits. Were there any problems found? Yes Repair as necessary. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 4»(ref-246912-S04736048862007011000000) . No Replace and program the Powertrain Control Module. Refer to «MODULE-POWERTRAIN CONTROL»(ref-246912-S21217387632007011000000) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 4»(ref-246912-S04736048862007011000000) .

Scheme 472

1. When Monitored: Continuously with the ignition on.

1. Set Condition: The Steering Column Control Module (SCCM) has detected that the Speed Control Switches are not operating properly.

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

1. Set Condition: Internal PCM failure detected. One Trip Fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 473

1. 1) PCM IGNITION CIRCUITS Turn the ignition off. Disconnect the PCM harness connectors. 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 diagnosis. With a 12-volt test light connected to ground and with special tool #8815 installed, probe the (F202) and (F924) Fused Ignition Switch circuits. Perform the above check with the Ignition key in the off lock position, Ignition on, engine not running position, and during cranking. Wiggle the related wire harness while probing the special tool with the test light to try to interrupt the circuit. Does the test light illuminate brightly? Yes Go To step 2) . No Repair the open or excessive resistance in the (F202) and (F924) Fused Ignition Switch (Off, Run, Start) circuits. Inspect the related fuse, if the fuse is open check the circuits for a short to ground. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 1»(ref-246961-S26222032382007011000000) .
2. 2) PCM The Powertrain Control Module is reporting internal errors. NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary. Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits. Were there any problems found? Yes Repair as necessary. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Replace and program the Powertrain Control Module. Refer to «MODULE-POWERTRAIN CONTROL»(ref-246912-S21217387632007011000000) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .

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

1. Set Condition: Internal PCM failure detected. One Trip Fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

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

1. Set Condition: Internal PCM failure detected. One 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 to quickly. One Trip Fault. ETC light is flashing.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 474

Scheme 475

Scheme 476

Scheme 477

1. 1) ACTIVE DTC Ignition on, engine not running. With a scan tool, read DTCs. Is the DTC active at this time? Yes Go To step 2) . No Refer to «INTERMITTENT CONDITION»(ref-246952-S29354200532007011000000) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
2. 2) (F855) PRIMARY 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the PCM harness connectors. Disconnect all the Sensors that share the (F855) 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 (F855) 5-volt Supply circuit. Measure the resistance between ground and the (F855) 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 (F855) Primary 5-volt Supply circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 3) .
3. 3) SENSOR SHORTED TO GROUND Connect the PCM harness connectors and all the previously disconnected Sensor except for the CKP Sensor harness connector. Ignition on, engine not running. Measure the voltage on the (F855) Primary 5-volt Supply circuit at the Throttle Body harness connector. CAUTION: 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 (F855) 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 Replace the Sensor that causes the (F855) Primary 5-volt Supply circuit voltage to increase when disconnected. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 4) .
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 (F855) Primary 5-volt Supply circuit at the CKP Sensor harness connector. Is the voltage between 4.8 and 5.2 volts? Yes Replace the Crank Position Sensor. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 5) .
5. 5) (F855) PRIMARY 5-VOLT SUPPLY SHORTED TO BATTERY VOLTAGE Turn the ignition off. Disconnect the PCM harness connectors. Disconnect all the Sensors that share the (F855) Primary 5-volt Supply circuit. Ignition on, engine not running. Measure the voltage on the (F855) Primary 5-volt Supply circuit in the CKP Sensor harness connector. Is the voltage present? Yes Repair the short to battery voltage in the (F855) Primary 5-volt Supply circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 6) .
6. 6) (F855) 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 (F855) 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 (F855) Primary 5-volt Supply circuit. Is the resistance below 5.0 ohms? Yes Go To step 7) . No Repair the open in the (F855) Primary 5-volt Supply circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
7. 7) PCM NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary. Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits. Were there any problems found? Yes Repair as necessary. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Replace and program the Powertrain Control Module. Refer to «MODULE-POWERTRAIN CONTROL»(ref-246912-S21217387632007011000000) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .

Scheme 478

For the Engine circuit diagram (Refer to ENGINE - SCHEMATICS AND DIAGRAMS) .

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.

Scheme 479

Scheme 480

Scheme 481

1. 1) ACTIVE DTC Ignition on, engine not running. With a scan tool, read DTCs. Is the DTC active at this time? Yes Go To step 2) . No Refer to «INTERMITTENT CONDITION»(ref-246952-S29354200532007011000000) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
2. 2) (F856) AUXILIARY 5-VOLT SUPPLY SHORTED TO GROUND Turn the ignition off. Disconnect the PCM harness connectors. Disconnect all the Sensors that share the (F856) 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 (F856) 5-volt Supply circuit. Measure the resistance between ground and the (F856) 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 (F856) Auxiliary 5-volt Supply circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 3) .
3. 3) SENSOR SHORTED TO GROUND Connect the PCM harness connectors and all the previously disconnected Sensor except for the CMP Sensor harness connector. Ignition on, engine not running. Measure the voltage on the (F856) Auxiliary 5-volt Supply circuit in the CMP Sensor harness connector. CAUTION: 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 (F856) 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 Replace the Sensor that causes the (F856) Auxiliary 5-volt Supply circuit voltage to increase when disconnected. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 4) .
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 (F856) Auxiliary 5-volt Supply circuit in the CMP Sensor harness connector. Is the voltage below 4.5 volts? Yes Go To step 5) . No Replace the Cam Position Sensor. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
5. 5) (F856) AUXILIARY 5-VOLT SUPPLY SHORTED TO BATTERY VOLTAGE Turn the ignition off. Disconnect the PCM harness connectors. Disconnect all the Sensors that share the (F856) Auxiliary 5-volt Supply circuit. Ignition on, engine not running. Measure the voltage on the (F856) Auxiliary 5-volt Supply circuit at the CMP Sensor harness connector. Is the voltage above 5.2 volts? Yes Repair the short to battery voltage in the (F856) Auxiliary 5-volt Supply circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 6) .
6. 6) (F856) 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 (F856) 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 (F856) Auxiliary 5-volt Supply circuit. Is the resistance below 5.0 ohms? Yes Go To step 7) . No Repair the open in the (F856) Auxiliary 5-volt Supply circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
7. 7) PCM NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary. Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits. Were there any problems found? Yes Repair as necessary. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Replace and program the Powertrain Control Module. Refer to «MODULE-POWERTRAIN CONTROL»(ref-246912-S21217387632007011000000) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .

1. When Monitored: Continuously with the ignition on.

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

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. When Monitored: With the ignition on.

1. Set Condition: Internal controller failure. One Trip Fault. Three Global Good Trips to Clear.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. When Monitored: With the ignition on. ASD Relay energized. Battery voltage greater than 10 volts.

1. Set Condition: The PCM senses the SRV is not at the desired state. One Trip Fault.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 482

Scheme 483

Scheme 484

Scheme 485

1. 1) ACTIVE DTC Ignition on, engine not running. With a scan tool, read DTC. Is the DTC active at this time? Yes Go To step 2) . No Refer to «INTERMITTENT CONDITION»(ref-246952-S29354200532007011000000) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
2. 2) SHORT RUNNER VALVE SOLENOID OPERATION Turn the ignition off. Disconnect the SRV Solenoid harness connector. Ignition on, engine not running. Using a 12-volt test light, connect one end to the (K236) SRV Control circuit and the other end the (Z904) Ground circuit in the SRV Solenoid harness connector. With the scan tool, actuate (Toggle) the SRV Solenoid. Does the test light illuminate brightly and flash on and off? Yes Replace the Short Runner Valve Solenoid. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 3) .
3. 3) (K343) FUSED AUTO SHUT DOWN RELAY OUTPUT2 CIRCUIT OPEN Turn the ignition off. Disconnect the Short Runner Valve Solenoid harness connector. Turn the ignition on. Using the scan tool, actuate (Toggle) the ASD Relay. Using a 12-volt test light connected ground, probe the Fused ASD Relay Output circuit in the SRV Solenoid harness connector. Does the test light illuminate brightly and flash on and off? Yes Go To step 4) . No Repair the (K343) Fused ASD Relay Output circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
4. 4) (K236) SRV CONTROL CIRCUIT SHORT TO BATTERY VOLTAGE Turn the ignition off Disconnect the PCM harness connectors. Turn the ignition on. Measure the voltage of the (K236) SRV Control circuit in the SRV Solenoid harness connector. Does the voltage indicate voltage present? Yes Repair the short to voltage in the SRV Control circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 5) .
5. 5) (K236) SRV CONTROL CIRCUIT SHORT TO GROUND Turn the ignition off. Measure the resistance between the (K236) SRV Control circuit in the SRV Solenoid harness connector and ground. Is the resistance below 100 ohms? Yes Repair the short to ground in the (K236) SRV Control circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 6) .
6. 6) (K236) SRV CONTROL 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 (K236) SRV Control circuit between from the SRV Solenoid harness connector to the appropriate terminal of the special tool. Is the resistance below 5.0 ohms? Yes Go To step 7) . No Repair the open in the (K236) SRV Control circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . Go To step 7) .
7. 7) PCM NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary. Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits. Were there any problems found? Yes Repair as necessary. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Replace and program the Powertrain Control Module. Refer to «MODULE-POWERTRAIN CONTROL»(ref-246912-S21217387632007011000000) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .

Scheme 486

For the Engine circuit diagram (Refer to ENGINE - SCHEMATICS AND DIAGRAMS) .

1. When Monitored: TEST No.1: With the ignition on, the fuel level is compared to the previous key down after a 20 second delay. TEST No.2: The PCM monitors the fuel level at ignition on.

1. Set Condition: TEST No.1: If the PCM does not see a difference in fuel level of greater than 0.1 volt the test will fail. TEST No.2: If the PCM does not see a change in the fuel level of.1765 over a set amount of miles the test will fail. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 487

Scheme 488

Scheme 489

1. 1) ACTIVE DTC NOTE: Diagnose any CAN - C or CAN - B Communication DTCs before continuing. NOTE: Diagnose P2067 or P2068 first, if set along with P2066. Ignition on, engine not running. With a scan tool, read DTCs. Is the DTC active at this time? Yes Go To step 2) . No Refer to «INTERMITTENT CONDITION»(ref-246952-S29354200532007011000000) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
2. 2) VISUALLY INSPECT FUEL TANK Visually inspect the Fuel Tank for damage that may restrict the Fuel Sending Unit float from moving. Is the Fuel Tank OK? Yes Go To step 3) . No Replace the Fuel Tank as necessary. Refer to «TANK-FUEL»(ref-246920-S06029376312007011000000) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
3. 3) (N5) FUEL LEVEL SIGNAL CIRCUIT OPEN Turn the ignition off. Disconnect the Fuel Pump Module harness connector. Disconnect the C2 Cluster harness connectors. Measure the resistance of the (N5) Fuel Level Signal circuit from the Fuel Pump Module harness connector to the C2 Cluster harness connector. Is the resistance below 5.0 ohms? Yes Go To step 4) . No Repair the open in the (N5) Fuel Level Signal circuit. Perform «BODY VERIFICATION TEST - VER 1»(ref-246912-S11713511292007011000000) .
4. 4) (N5) FUEL LEVEL SIGNAL CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (N5) Fuel Level Signal circuit in the Fuel Pump Module harness connector. Is the resistance below 100 ohms? Yes Repair the short to ground in the (N5) Fuel Level Signal circuit. Perform «BODY VERIFICATION TEST - VER 1»(ref-246912-S11713511292007011000000) . No Go To step 5) .
5. 5) (Z210) FUEL LEVEL SENSOR GROUND CIRCUIT OPEN Measure the resistance of the (Z210) Fuel Level Sensor Ground circuit from the Fuel Pump Module harness connector to the C2 Cluster harness connector. Is the resistance below 5.0 ohms? Yes Go To step 6) . No Repair the open in the (Z210) Fuel Level Sensor Ground circuit. Perform «BODY VERIFICATION TEST - VER 1»(ref-246912-S11713511292007011000000) .
6. 6) INTERNAL INSPECTION OF THE FUEL TANK WARNING: The fuel system is under a constant pressure (even with the engine off). Before testing or servicing any fuel system hose, fitting or line, the fuel system pressure must be released. Failure to follow these instructions can result in personal injury or death. Remove the Fuel Tank. Refer to «TANK-FUEL»(ref-246920-S06029376312007011000000) . Remove the Fuel Pump Module. Visually inspect the inside of the Fuel Tank for any obstructions or deformities. Inspect the Fuel Pump Module Float arm for damage. Were any problems found? Yes Repair or replace as necessary. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 7) .
7. 7) FUEL LEVEL SENSOR If there are no possible causes remaining, view repair. Repair Replace the Fuel Level Sensor. Perform «BODY VERIFICATION TEST - VER 1»(ref-246912-S11713511292007011000000) .

1. When Monitored: Ignition on and battery voltage above 10.4 volts.

1. Set Condition: The fuel level sensor signal voltage goes below 0.4 of a volt for more than 90 seconds. One Trip Fault. Three good trips to turn off the MIL.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to ENGINE - SCHEMATICS AND DIAGRAMS) .

Scheme 490

1. 1) FUEL LEVEL SENSOR VOLTAGE BELOW 0.4 OF A VOLT NOTE: Diagnose any CAN - B or CAN -C Communication DTCs before continuing. Ignition on, engine not running. With the scan tool, read the Fuel Level Sensor voltage. Is the Fuel Level Sensor voltage below 0.4 of a volt? Yes Go To step 2) . No Refer to «INTERMITTENT CONDITION»(ref-246952-S29354200532007011000000) . Perform «BODY VERIFICATION TEST - VER 1»(ref-246912-S11713511292007011000000) .
2. 2) FUEL LEVEL SENSOR Turn the ignition off. Disconnect the Fuel Pump Module harness connector. Ignition on, engine not running. With the scan tool, read the Fuel Level Sensor voltage. Did the Fuel Level Sensor voltage change from below 0.4 of a volt to above 4.0 volts? Yes Replace the Fuel Level Sensor. Perform «BODY VERIFICATION TEST - VER 1»(ref-246912-S11713511292007011000000) . No Go To step 3) .
3. 3) (N5) FUEL LEVEL SIGNAL CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the C2 Cluster harness connectors. Measure the resistance between ground and the (N5) Fuel Level Signal circuit in the Fuel Pump Module harness connector. Is the resistance below 100 ohms? Yes Repair the short to ground in the (N5) Fuel Level Signal circuit. Perform «BODY VERIFICATION TEST - VER 1»(ref-246912-S11713511292007011000000) . No Go To step 4) .
4. 4) (N5) FUEL LEVEL SIGNAL CIRCUIT SHORTED TO THE (Z210) FUEL LEVEL SENSOR GROUND CIRCUIT Measure the resistance between the (N5) Fuel Level Signal circuit and the (Z210) Fuel Level Sensor Ground circuit in the Fuel Pump Module harness connector. Is the resistance below 5.0 ohms? Yes Repair the short between the (Z210) Fuel Level Sensor Ground circuit and the (N5) Fuel Level Signal circuit. Perform «BODY VERIFICATION TEST - VER 1»(ref-246912-S11713511292007011000000) . No Go To step 5) .
5. 5) INSTRUMENT CLUSTER NOTE: Before continuing, check the Instrument Cluster harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary. Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits. Were there any problems found? Yes Repair as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-246912-S11713511292007011000000) . No Replace and program the Instrument Cluster. Refer to «INSTRUMENT CLUSTER - SERVICE INFORMATION»(ref-246930-S40788253952007011000000) . Perform «BODY VERIFICATION TEST - VER 1»(ref-246912-S11713511292007011000000) .

1. When Monitored: Ignition on and battery voltage above 10.4 volts.

1. Set Condition: The fuel level sensor signal voltage at the PCM goes above 4.9 volts for more than 90 seconds. One Trip Fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 491

Scheme 492

1. 1) FUEL LEVEL SENSOR VOLTS ABOVE 4.9 VOLTS NOTE: Diagnose any CAN - B and CAN - C Communication DTCs before continuing. Ignition on, engine not running. With a scan tool, read the Fuel Level Sensor voltage. Is the Fuel Level Sensor voltage above 4.9 volts? Yes Go To step 2) . No Refer to «INTERMITTENT CONDITION»(ref-246952-S29354200532007011000000) . Perform «BODY VERIFICATION TEST - VER 1»(ref-246912-S11713511292007011000000) .
2. 2) FUEL LEVEL SENSOR Turn the ignition off. Disconnect the Fuel Pump Module electrical harness connector. Ignition on, engine not running. Connect a jumper wire between the (N5) Fuel Level Signal circuit and the (Z210) Fuel Level Sensor Ground circuit in the Fuel Pump Module harness connector. With the scan tool, read the Fuel Level Sensor voltage. Did the Fuel Level Sensor voltage change from above 4.8 volts to below 0.4 of a volt with the jumper wire installed? Yes Replace the Fuel Level Sensor. Perform «BODY VERIFICATION TEST - VER 1»(ref-246912-S11713511292007011000000) . No Go To step 3) . NOTE: Remove the jumper wire before continuing.
3. 3) (N5) FUEL LEVEL SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE Turn the ignition off. Disconnect the C2 Cluster harness connector. Ignition on, engine not running. Measure the voltage on the (N5) Fuel Level Signal circuit in the Fuel Pump Module harness connector. Is the voltage above 5.2 volts? Yes Repair the short to battery voltage in the (N5) Fuel Level Signal circuit. Perform «BODY VERIFICATION TEST - VER 1»(ref-246912-S11713511292007011000000) . No Go To step 4) .
4. 4) (N5) FUEL LEVEL SIGNAL CIRCUIT OPEN Turn the ignition off. Measure the resistance of the (N5) Fuel Level Signal circuit from the Fuel Pump Module harness connector to the C2 Cluster harness connector. Is the resistance below 5.0 ohms? Yes Go To step 5) . No Repair the open in the (N5) Fuel Level Signal circuit. Perform «BODY VERIFICATION TEST - VER 1»(ref-246912-S11713511292007011000000) .
5. 5) (Z210) FUEL LEVEL SENSOR GROUND CIRCUIT OPEN Measure the resistance of the (Z210) Fuel Level Sensor Ground circuit from the Fuel Pump Module harness connector to the C2 Cluster harness connector. Is the resistance below 5.0 ohms? Yes Go To step 6) . No Repair the open in the (Z210) Fuel Level Sensor Ground circuit. Perform «BODY VERIFICATION TEST - VER 1»(ref-246912-S11713511292007011000000) .
6. 6) INSTRUMENT CLUSTER NOTE: Before continuing, check the Instrument Cluster harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary. Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits. Were there any problems found? Yes Repair as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-246912-S11713511292007011000000) . No Replace and program the Instrument Cluster. Refer to «INSTRUMENT CLUSTER - SERVICE INFORMATION»(ref-246930-S40788253952007011000000) . Perform «BODY VERIFICATION TEST - VER 1»(ref-246912-S11713511292007011000000) .

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 engine running in closed loop mode, the ambient/battery temperature above (-7°C) 20°F, altitude below 8500 ft.

1. Set Condition: If the PCM multiplies short term compensation by long term adaptive as well as a purge fuel multiplier and the result is below a certain value for 30 seconds over two trips, a freeze frame is stored, the MIL illuminates and a trouble code is stored. Two Trip Fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 493

Scheme 494

Scheme 495

Scheme 496

Scheme 497

Scheme 498

1. 1) ACTIVE DTC NOTE: Check the vehicle repair history. If the 1/2 O2 has been replace make sure that the O2 sensor was properly installed and meets OEM specification. NOTE: Check for contaminants that may have damaged the O2 Sensor: contaminated fuel, unapproved silicone, oil and coolant. Ignition on, engine not running. With a scan tool, read DTCs. Is the DTC active at this time? Yes Go To step 2) . No Refer to «INTERMITTENT CONDITION»(ref-246952-S29354200532007011000000) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
2. 2) EXHAUST LEAK Turn the ignition off. WARNING: To avoid personal injury from the exhaust system being hot, allow the exhaust to cool down to a safe temperature before performing a physical inspection. Failure to follow these instructions can result in personal injury or death. Visually and Physically inspect for holes, cracks and blockage in the exhaust system. Is the exhaust system is good condition? Yes Go To step 3) . No Repair or Replace as necessary. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
3. 3) ENGINE MECHANICAL PROBLEM Check for any of the following conditions/mechanical problems. AIR INDUCTION SYSTEM - must be free from leaks ENGINE VACUUM - must be at least 13 inches in neutral ENGINE VALVE TIMING - must be within specifications ENGINE COMPRESSION - must be within specifications ENGINE EXHAUST SYSTEM - must be free of any restrictions or leaks ENGINE PCV SYSTEM - must flow freely TORQUE CONVERTER STALL SPEED - must be within specifications POWER BRAKE BOOSTER - no internal vacuum leaks FUEL - must be free of contamination FUEL INJECTOR - plugged or restricted injector; control wire not connected to correct injector Are there any engine mechanical problems? Yes Repair as necessary. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 4) .
4. 4) O2 SENSOR Ignition on, engine not running. Disconnect the 1/2 O2 Sensor harness connector. With the scan tool, monitor the 1/2 O2 Sensor voltage. The O2 Sensor voltage should read 5.0 volts on the scan tool with the connector disconnected. Using a jumper wire, jump the (K141) O2 Sensor 1/2 Signal circuit to the (K904) O2 Downstream Return circuit in the O2 Sensor harness connector. NOTE: The voltage should drop from 5.0 volts to 2.5 volts with the jumper wire in place. Did the O2 Sensor volts change from 5.0 volts to 2.5 volts? Yes Replace the O2 Sensor Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 5) .
5. 5) (K141) O2 SENSOR 1/2 SIGNAL CIRCUIT Remove the jump wire. Ignition on, engine not running. With the scan tool, monitor the 1/2 O2 Sensor voltage. Is the voltage above 4.8 volts? Yes Go To step 6) . No Check the (K141) O2 Sensor 1/2 Signal circuit for an open or short to voltage. Inspect the O2 Sensor connector and the PCM harness connector. If OK, replace and program the Powertrain Control Module. Refer to «MODULE-POWERTRAIN CONTROL»(ref-246912-S21217387632007011000000) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
6. 6) (K299) O2 SENSOR 1/2 HEATER CONTROL CIRCUIT Turn the ignition off. Measure the resistance between ground and the (K299) O2 Sensor 1/2 Heater Control circuit in the O2 Sensor harness connector. Is the resistance below 5.0 ohms? Yes Repair the short to ground in the (K299) O2 Sensor 1/2 Heater Control circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 7) .
7. 7) (K904) O2 DOWNSTREAM RETURN CIRCUIT Measure the voltage on the (K904) O2 Downstream Return circuit in the O2 Sensor harness connector. Is the voltage at 2.5 volts? Yes Check the fuel system for contaminants. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Check the (K904) O2 Downstream Return circuit for a short to ground, open, or short to voltage. Inspect the O2 Sensor connector and the PCM harness connector. If OK, replace and program the Powertrain Control Module. Refer to «MODULE-POWERTRAIN CONTROL»(ref-246912-S21217387632007011000000) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .

1. When Monitored: With the engine running in closed loop mode, the ambient/battery temperature above (-7°C) 20°F, altitude below 8500 ft.

1. Set Condition: If the PCM multiplies short term compensation by long term adaptive as well as a purge fuel multiplier and the result is below a certain value for 30 seconds over two trips, a freeze frame is stored, the MIL illuminates and a trouble code is stored. Two Trip Fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.