Dtcs P2175 to U0103: Other Dodge Magnum I

Monitor Conditions

1. When Monitored: Ignition on and engine running with no MAP Sensor DTCs.

Set Conditions

1. Set Condition: PCM calculated MAP value is greater than actual MAP value plus an offset value. One trip fault and the code will set within 5 seconds. Three good trips to turn off the MIL. ETC light will flash.

Possible Causes

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

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1. 1) ACTIVE DTC NOTE: The most likely cause of this DTC is a vacuum leak. NOTE: Diagnose any 5-Volt Supply, TP Sensor, Oxygen Sensor, Fuel related or MAP Sensor DTCs before continuing. NOTE: The throttle plate should be free from binding and carbon build up. NOTE: Question the customer about weather conditions, as ICE build up on the blade can cause this fault when ambient is around +4 to -10 Celsius range. 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) RESTRICTED AIR INLET SYSTEM Turn the ignition off. Remove the Air Cleaner Assembly. Remove the Air Filter. Inspect the Throttle Body opening for signs of any foreign materials. Check the intake tube/ air cleaner for obstructions - include snow packing questions to customer. Were any restrictions found? Yes Repair the restriction as necessary. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 3) .
3. 3) MAP SENSOR OPERATION Start the engine. With a scan tool, monitor the MAP Sensor voltage. Snap the Accelerator pedal. Does the MAP Sensor voltage vary from below 2.0 volts at idle to above 3.5 volts at Wide Open Throttle? Yes Go To step 4) . No Go To step 11) .
4. 4) TP SENSOR OPERATION Ignition on, engine not running. With a scan tool, perform the Throttle Follower Test. TP Sensor No.1 should start at approximately 0.8 of a volt and increase to 4.2 volts. TP Sensor No.2 should start at approximately 4.2 volts and decrease to 0.8 of a volt. Is the voltage transition smooth between the appropriate values? Yes Refer to «INTERMITTENT CONDITION»(ref-246952-S29354200532007011000000) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 5) .
5. 5) RESISTANCE IN (F855) 5-VOLT SUPPLY CIRCUIT Turn the ignition off. Disconnect the Throttle Body harness connector. Disconnect the 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 (F855) 5-volt Supply circuit from the Throttle Body harness connector to the appropriate terminal of special tool #8815. Is the resistance below 100 ohms? Yes Go To step 6) . No Repair the excessive resistance in the (F855) 5-volt Supply circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
6. 6) (F855) 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND Measure the resistance between ground and (F855) 5-volt Supply circuit between the appropriate terminals of special tool #8815. Is the resistance above 100k ohms? Yes Go To step 7) . No Repair the short to ground in the (F855) 5-volt Supply circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
7. 7) TP SENSOR Connect the PCM harness connectors. Ignition on, engine not running. With a scan tool, monitor the TP Sensor voltage. Connect a jumper wire between the (K22) TP Sensor No.1 Signal circuit and the (K922) Sensor Return circuit in the Throttle Body harness connector. TP Sensor No.1 voltage should start at approximately 4.8 volts and decrease to 0.2 of a volt. Connect a jumper wire between the (K122) TP Sensor No.2 Signal circuit and the (F855) 5-volt Supply circuit in the Throttle Body harness connector. TP Sensor No.2 voltage should start at approximately 0 volts and increase to 4.8 to 5.2 volts. Does the TP Sensor voltage change to the appropriate voltage with the jumper wire installed? Yes Disconnect the Battery before replacing the Throttle Body Assembly. Replace the Throttle Body Assembly. After installation is complete, use a scan tool and select the ETC RELEARN function Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 8) .
8. 8) RESISTANCE IN THE TP SENSOR SIGNAL CIRCUIT Turn the ignition off. Disconnect the PCM harness connector. Measure the resistance of the (K22) and (K122) TP Signal circuits from the Throttle Body harness connector to the appropriate terminals of special tool #8815. Is the resistance below 5.0 ohms for each circuit? Yes Go To step 9) . No Repair the excessive resistance in the (K22) or (K122) TP Sensor Signal circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
9. 9) TP SENSOR SIGNAL CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (K22) and (K122) TP Signal circuits at the appropriate terminals of special tool #8815. Is the resistance above 100k ohms for each circuit? Yes Go To step 10) . No Repair the short to ground in the (K22) or (K122) TP Sensor Signal circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
10. 10) RESISTANCE IN THE (K922) SENSOR RETURN CIRCUIT Measure the resistance of the (K922) Sensor Return circuit from the Throttle Body harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To step 17) . No Repair the excessive resistance in the (K922) Sensor Return circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
11. 11) RESISTANCE IN THE (F856) 5-VOLT SUPPLY CIRCUIT Turn the ignition off. Disconnect the MAP Sensor harness connector. Disconnect the C1/A 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 (F856) 5-volt Supply circuit from the MAP Sensor harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To step 12) . No Repair the excessive resistance in the (F856) 5-volt Supply circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
12. 12) (F856) 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (F856) 5-volt Supply circuit in the MAP Sensor harness connector. Is the resistance above 100k ohms? Yes Go To step 13) . No Repair the short to ground in the (F856) 5-volt Supply circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
13. 13) MAP SENSOR Connect the C1/A PCM harness connector. Ignition on, engine not running. With a scan tool, monitor the MAP Sensor voltage. Connect a jumper wire between the (K1) MAP Signal circuit and the (K900) Sensor ground circuit. Cycle the ignition switch from off to on. With a scan tool, monitor the MAP Sensor voltage. Does the scan tool display MAP voltage from approximately 4.9 volts to below 0.5 volt with the jumper wire installed? Yes Replace the MAP Sensor. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 14) . NOTE: Remove the jumper wire before continuing.
14. 14) RESISTANCE IN THE (K1) MAP SIGNAL CIRCUIT Turn the ignition off. Disconnect the PCM harness connector. Measure the resistance of the (K1) MAP Signal circuit from the MAP Sensor harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To step 15) . No Repair the excessive resistance in the (K1) MAP Signal circuit Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
15. 15) (K1) MAP SIGNAL CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (K1) MAP Signal circuit in the MAP Sensor harness connector. Is the resistance above 100k ohms? Yes Go To step 16) . No Repair the short to ground in the (K1) MAP Signal circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
16. 16) RESISTANCE IN THE (K900) SENSOR GROUND CIRCUIT Measure the resistance of the (K900) Sensor ground circuit from the MAP Sensor harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To step 17) . No Repair the excessive resistance in the (K900) Sensor ground circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
17. 17) 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) .

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

1. When Monitored: Ignition on, Engine running, and no ECT DTCs present.

1. Set Condition: PCM recognizes that the ECT has failed its self coherence test. The coolant temp should only change at a certain rate, if this rate is too slow or too fast this fault will set. Two trip fault. Three good trips to clear MIL. ETC light will illuminate on first trip failure.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

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1. 1) ACTIVE DTC Ignition on, engine not running. NOTE: If this code sets during extreme ambient temperatures, improper installation of a block heater could be the cause of this DTC. With a scan tool, read DTCs. Diagnose all other ECT and Cooling System codes before continuing. 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) LOW COOLANT LEVEL NOTE: If a Engine Coolant Temperature (ECT) DTC is set along with this code, diagnose the ECT DTC first. NOTE: Inspect the ECT terminals and related PCM terminals. Ensure the terminals are free from corrosion and damage. NOTE: The best way to diagnose this DTC is to allow the vehicle to sit overnight outside in order to have a totally cold soaked engine. NOTE: Extremely cold outside ambient temperatures may have caused this DTC to set. NOTE: Need to make sure that no Cooling System DTCs are set or changes that would make the warm up much slower or much faster: broken water pump can set this, addition of aftermarket auxiliary cooler can set this DTC. WARNING: Never open the cooling system when the engine is hot. The system is under pressure. Failure to follow these instructions can result in personal injury or death. Allow the engine to cool before opening the cooling system. Inspect the coolant system for proper level and condition. Is the coolant level and condition OK? Yes Go To step 3) . No Inspect the vehicle for a coolant leak and add the necessary amount of coolant. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
3. 3) THERMOSTAT NOTE: This test works best if performed on a cold engine (cold soak). Ignition on, engine not running. With a scan tool, read the Eng Coolant Tmp Deg value. If the engine was allowed to sit overnight (cold soak), the temperature value should be a sensible value that is somewhere close to the ambient temperature. NOTE: If engine coolant temperature is above 82°C (180°F), allow the engine to cool until 65°C (150°F) is reached. Start the Engine. During engine warm-up monitor the Eng Coolant Tmp Deg value. The temp deg value change should be a smooth transition from start up to normal operating temp 82°C (180°F). Also monitor the actual coolant temperature with a thermometer. NOTE: As the engine warms up to operating temperature, the actual coolant temperature (thermometer reading) and the Eng Coolant Tmp Deg on the scan tool should stay relatively close to each other. Using the appropriate service information, determine the proper opening temperature of the thermostat. Did the thermostat open at the proper temperature? Yes Go To step 4) . No Replace the thermostat. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
4. 4) ECT SENSOR Connect a jumper between the (K2) ECT Signal circuit and the (K900) Sensor ground circuit in the ECT Sensor harness connector. Turn the ignition off. Disconnect the ECT Sensor harness connector. With a scan tool, read the ECT voltage. Is the voltage below 1.0 volt? Yes Replace the ECT Sensor. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 5) .
5. 5) (K2) ECT SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE Turn the ignition off. Disconnect the PCM harness connectors. Ignition on, engine not running. Measure the voltage on the (K2) ECT Signal circuit in the ECT Sensor harness connector. Is the voltage above 5.2 volts? Yes Repair the short to battery voltage in the (K2) ECT Signal circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 6) .
6. 6) (K2) ECT 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 (K2) ECT Signal circuit from the ECT Sensor harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To step 7) . No Repair the open in the (K2) ECT Signal circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
7. 7) (K900) SENSOR GROUND CIRCUIT OPEN Measure the resistance of the (K900) Sensor ground circuit from the ECT Sensor harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To step 8) . No Repair the open in the (K900) Sensor ground circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
8. 8) (K2) ECT SIGNAL CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (K2) ECT Signal circuit in the ECT Sensor harness connector. Is the resistance below 100 ohms? Yes Repair the short to ground in the (K2) ECT Signal circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 9) .
9. 9) (K2) ECT SIGNAL CIRCUIT SHORTED TO THE (K900) SENSOR GROUND CIRCUIT Measure the resistance between the (K2) ECT Signal circuit and the (K900) Sensor ground circuit in the ECT Sensor harness connector. Is the resistance below 5.0 ohms? Yes Repair the short between the (K900) Sensor ground and the (K2) ECT Signal circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 10) .
10. 10) 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) .

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

1. When Monitored: Ignition on. No Break or APPS faults present.

1. Set Condition: The PCM recognizes a brake application following the APPS showing a fixed pedal opening. Temporary or permanent. Internally the PCM will reduce throttle opening below driver demand. One trip fault and the code will be set within 5 seconds. ETC light will illuminate, the light will only stay illuminated while DTC is active.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

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1. 1) DTC INFORMATION NOTE: If a pedal assembly becomes mechanically stuck the voltage output will stay fixed, if this is also Followed by a long application of the brakes this code will set. NOTE: When this code sets the pedal position in the PCM software will ramp to idle. If the Pedal voltage changes OR the brake pedal is released, the pedal position in the PCM software will ramp up to the pedal position and the ETC light will go out. With a scan tool, read DTCs and record the related Freeze Frame data. Diagnose all other Stop Lamp Switch and APP Sensor codes before continuing. This code can be set by a driver who uses both feet while driving, one for the Accelerator Pedal and the other for the Brake Pedal. NOTE: The most likely cause of this DTC is caused by the customer Brake Torquing the engine by pressing the Accelerator pedal and the pressing the Brake Pedal. Ask the driver of the vehicle if these conditions apply to their driving habits. Are the listed conditions part of the customers driving habits? Yes Advise the customer of what caused the DTC. This is normal operation of a ETC equipped vehicle because of safety issues. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 2) .
2. 2) STOP LAMP SWITCH OPERATION With a scan tool, read both Stop Lamp Switch statuses while pressing and releasing the Brake Pedal. Does the scan tool display the Pressed and Released while pressing and releasing the Pedal? Yes Go To step 3) . No Check the Stop Lamp Switch for proper installation and check the related circuits for opens and shorts using the appropriate wiring diagram. If OK, replace the Stop Lamp Switch assembly. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
3. 3) APP SENSOR SWEEP Ignition on, engine not running. With a scan tool, monitor both APP Sensor voltage readings. Slowly press the accelerator pedal from idle until it reaches the end stop near the floor. APPS No.1 voltage should start at approximately 0.45 of a volt and increase to approximately 4.6 volts with a smooth transition. APPS No.2 voltage should start at approximately 0.22 of a volt and increase to approximately 2.31 volts with a smooth transition. Does the voltage for the appropriate sensor follow the list specification? Yes Refer to «INTERMITTENT CONDITION»(ref-246952-S29354200532007011000000) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Check the Signal and Return circuits for opens and shorts. If OK, Replace the APP Sensor Assembly. Refer to «PEDAL-ACCELERATOR»(ref-246920-S07062127292007011000000) . After installation is complete, with a scan tool select the ETC RELEARN function to relearn the APPS values. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .

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

1. When Monitored: Engine running and battery voltage greater than 10 volts.

1. Set Condition: If PCM detects that the secondary ignition burn time is incorrect, too short, or not present, an error is detected. One Trip Fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

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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 Go To step 9) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
2. 2) SECONDARY SPARK NOTE: Inspect the ignition coil for damage, carbon tracking on the coil or a damaged spark plug insulator boot. If a problem is found, replace the ignition coil. Turn the ignition off. Remove the ignition coil. Install a spark tester to the ignition coil. NOTE: On the 2.7 and 3.5L engines, cylinders 1, 3 and 5, it is necessary to remove the upper intake to access the ignition coils. Once the ignition coil has been removed from the cylinder head, the intake must be reinstalled to be able to crank the engine. Move the ignition coil harness connector through the slots in the upper intake and then connect the coil to the harness connector. Secure the upper intake to the lower intake in accordance with the service information. While cranking the engine observe the spark coming from the spark tester. NOTE: A crisp blue spark that is able to jump the gap of the spark tester should be generated. Is good spark generated? Yes Ensure the cylinder is operating properly. If OK, replace the Spark Plug. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 3) .
3. 3) (K343) ASD RELAY OUTPUT 2 CIRCUIT Turn the ignition off. Disconnect the Ignition Coil harness connector. Ignition on, engine not running. With a scan tool, actuate the ASD Relay. Using a 12-volt test light connected to ground, probe the (K343) ASD Relay Output 2 circuit in the Coil on Plug harness connector. Does the test light illuminate brightly? Yes Go To step 4) . No Repair the open or short to ground in the (K343) ASD Relay Output 2 circuit between the IPM and Coil harness connector. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . NOTE: Stop All Actuations.
4. 4) IGNITION COIL RESISTANCE Turn the ignition off. NOTE: The following resistance measurement should be taken at 70°-80° F. Measure the resistance of the Ignition Coil. Is the resistance between 0.55 to 1.5 ohms at 77°F (25°C) for the Ignition Coil being tested? Yes Go To step 5) . No Replace the Ignition Coil. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
5. 5) IGNITION COIL Using a 12-volt test light connected to a 12-volt source, probe the (K19) Coil Control No.1 circuit. Crank the engine for 5 seconds while observing the test light. What is the condition of the test light while cranking the engine? Brightly blinking. Replace the Ignition Coil. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . ON constantly. Go To step 6) . OFF constantly. Go To step 7) .
6. 6) (K19) COIL CONTROL NO.1 CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the C2 PCM harness connector. Measure the resistance between ground and the (K19) Coil Control No.1 circuit in the Ignition Coil harness connector. Is the resistance below 100 ohms? Yes Repair the short to ground in the (K19) Coil Control No.1 circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 8) .
7. 7) (K19) COIL CONTROL NO.1 CIRCUIT OPEN Turn the ignition off. Disconnect the C2 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 (K19) Coil Control No.1 circuit from the Ignition Coil harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To step 8) . No Repair the open in the (K19) Coil Control No.1 circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
8. 8) 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) .
9. 9) VISUAL AND PHYSICAL INSPECTION Turn the ignition off. Remove the Spark Plug. Inspect the Spark Plug for the following conditions. Cracks Carbon Tracking Foreign Material Gap size out of specifications Loose or broken electrode NOTE: Lightly tap the bottom of the spark plug on a solid surface. The electrode in the spark plug should not move. Were any of the above conditions present? Yes Replace the Spark Plug. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Refer to «INTERMITTENT CONDITION»(ref-246952-S29354200532007011000000) .

Scheme 615

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

1. When Monitored: Engine running and battery voltage greater than 10 volts.

1. Set Condition: If PCM detects that the secondary ignition burn time is incorrect, too short, or not present, an error is detected. One Trip Fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

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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 Go To step 9) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
2. 2) SECONDARY SPARK NOTE: Inspect the ignition coil for damage, carbon tracking on the coil or a damaged spark plug insulator boot. If a problem is found, replace the ignition coil. Turn the ignition off. Remove the ignition coil. Install a spark tester to the ignition coil. NOTE: On the 2.7 and 3.5L engines, cylinders 1, 3 and 5, it is necessary to remove the upper intake to access the ignition coils. Once the ignition coil has been removed from the cylinder head, the intake must be reinstalled to be able to crank the engine. Move the ignition coil harness connector through the slots in the upper intake and then connect the coil to the harness connector. Secure the upper intake to the lower intake in accordance with the service information. While cranking the engine observe the spark coming from the spark tester. NOTE: A crisp blue spark that is able to jump the gap of the spark tester should be generated. Is good spark generated? Yes Ensure the cylinder is operating properly. If OK, replace the Spark Plug. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 3) .
3. 3) (K343) ASD RELAY OUTPUT2 CIRCUIT Turn the ignition off. Disconnect the Ignition Coil harness connector. Ignition on, engine not running. With a scan tool, actuate the ASD Relay. Using a 12-volt test light connected to ground, probe the (K343) ASD Relay Output 2 circuit in the Coil on Plug harness connector. Does the test light illuminate brightly? Yes Go To step 4) . No Repair the open or short to ground in the (K343) ASD Relay Output 2 circuit between the IPM and Coil harness connector. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . NOTE: Stop All Actuations.
4. 4) IGNITION COIL RESISTANCE Turn the ignition off. NOTE: The following resistance measurement should be taken at 70°-80° F. Measure the resistance of the Ignition Coil. Is the resistance between .55 to 1.5 ohms at 77°F (25°C) for the Ignition Coil being tested? Yes Go To step 5) . No Replace the Ignition Coil. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
5. 5) IGNITION COIL Using a 12-volt test light connected to a 12-volt source, probe the (K17) Coil Control No.2 circuit. Crank the engine for 5 seconds while observing the test light. What is the condition of the test light while cranking the engine? Brightly blinking. Replace the Ignition Coil. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . ON constantly. Go To step 6) . OFF constantly. Go To step 7) .
6. 6) (K17) COIL CONTROL NO.2 CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the C2 PCM harness connector. Measure the resistance between ground and the (K17) Coil Control No.2 circuit in the Ignition Coil harness connector. Is the resistance below 100 ohms? Yes Repair the short to ground in the (K17) Coil Control No.2 circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 8) .
7. 7) (K17) COIL CONTROL NO.2 CIRCUIT OPEN Turn the ignition off. Disconnect the C2 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 (K17) Coil Control No.2 circuit from the Ignition Coil harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To step 8) . No Repair the open in the (K17) Coil Control No.2 circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
8. 8) 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) .
9. 9) Visual and Physical Inspection Turn the ignition off. Remove the Spark Plug. Inspect the Spark Plug for the following conditions. Cracks Carbon Tracking Foreign Material Gap size out of specifications Loose or broken electrode NOTE: Lightly tap the bottom of the spark plug on a solid surface. The electrode in the spark plug should not move. Were any of the above conditions present? Yes Replace the Spark Plug. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Refer to «INTERMITTENT CONDITION»(ref-246952-S29354200532007011000000) .

Scheme 620

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

1. When Monitored: Engine running and battery voltage greater than 10 volts.

1. Set Condition: If PCM detects that the secondary ignition burn time is incorrect, too short, or not present, an error is detected. One Trip Fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 621

Scheme 622

Scheme 623

Scheme 624

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 Go To step 9) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
2. 2) Secondary Spark NOTE: Inspect the ignition coil for damaged, carbon tracking on the coil or a damaged spark plug insulator boot. If a problem is found, replace the ignition coil. Turn the ignition off. Remove the ignition coil. Install a spark tester to the ignition coil. NOTE: On the 2.7 and 3.5L engines, cylinders 1, 3 and 5, it is necessary to remove the upper intake to access the ignition coils. Once the ignition coil has been removed from the cylinder head, the intake must be reinstalled to be able to crank the engine. Move the ignition coil harness connector through the slots in the upper intake and then connect the coil to the harness connector. Secure the upper intake to the lower intake in accordance with the service information. While cranking the engine observe the spark coming from the spark tester. NOTE: A crisp blue spark that is able to jump the gap of the spark tester should be generated. Is good spark generated? Yes Ensure the cylinder is operating properly. If OK, replace the Spark Plug. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 3) .
3. 3) (K343) ASD RELAY OUTPUT2 CIRCUIT Turn the ignition off. Disconnect the Ignition Coil harness connector. Ignition on, engine not running. With a scan tool, actuate the ASD Relay. Using a 12-volt test light connected to ground, probe the (K343) ASD Relay Output 2 circuit in the Coil on Plug harness connector. Does the test light illuminate brightly? Yes Go To step 4) . No Repair the open or short to ground in the (K343) ASD Relay Output 2 circuit between the IPM and Coil harness connector. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . NOTE: Stop All Actuations.
4. 4) IGNITION COIL RESISTANCE Turn the ignition off. NOTE: The following resistance measurement should be taken at 70°-80° F. Measure the resistance of the Ignition Coil. Is the resistance between .55 to 1.5 ohms at 77°F (25°C) for the Ignition Coil being tested? Yes Go To step 5) . No Replace the Ignition Coil. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
5. 5) IGNITION COIL Using a 12-volt test light connected to a 12-volt source, probe the (K18) Coil Control No.3 circuit. Crank the engine for 5 seconds while observing the test light. What is the condition of the test light while cranking the engine? Brightly blinking. Replace the Ignition Coil. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . ON constantly. Go To step 6) . OFF constantly. Go To step 7) .
6. 6) (K18) COIL CONTROL NO.3 CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the C2 PCM harness connector. Measure the resistance between ground and the (K18) Coil Control No.3 circuit in the Ignition Coil harness connector. Is the resistance below 100 ohms? Yes Repair the short to ground in the (K18) Coil Control No.3 circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 8) .
7. 7) (K18) COIL CONTROL NO.3 CIRCUIT OPEN Turn the ignition off. Disconnect the C2 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 (K18) Coil Control No.3 circuit from the Ignition Coil harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To step 8) . No Repair the open in the (K18) Coil Control No.3 circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
8. 8) 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) .
9. 9) Visual and Physical Inspection Turn the ignition off. Remove the Spark Plug. Inspect the Spark Plug for the following conditions. Cracks Carbon Tracking Foreign Material Gap size out of specifications Loose or broken electrode NOTE: Lightly tap the bottom of the spark plug on a solid surface. The electrode in the spark plug should not move. Were any of the above conditions present? Yes Replace the Spark Plug. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Refer to «INTERMITTENT CONDITION»(ref-246952-S29354200532007011000000) .

Scheme 625

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

1. When Monitored: Engine running and battery voltage greater than 10 volts.

1. Set Condition: If PCM detects that the secondary ignition burn time is incorrect, too short, or not present, an error is detected. One Trip Fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 626

Scheme 627

Scheme 628

Scheme 629

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 Go To step 9) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
2. 2) Secondary Spark NOTE: Inspect the ignition coil for damage, carbon tracking on the coil or a damaged spark plug insulator boot. If a problem is found, replace the ignition coil. Turn the ignition off. Remove the ignition coil. Install a spark tester to the ignition coil. NOTE: On the 2.7 and 3.5L engines, cylinders 1, 3 and 5, it is necessary to remove the upper intake to access the ignition coils. Once the ignition coil has been removed from the cylinder head, the intake must be reinstalled to be able to crank the engine. Move the ignition coil harness connector through the slots in the upper intake and then connect the coil to the harness connector. Secure the upper intake to the lower intake in accordance with the service information. While cranking the engine observe the spark coming from the spark tester. NOTE: A crisp blue spark that is able to jump the gap of the spark tester should be generated. Is good spark generated? Yes Ensure the cylinder is operating properly. If OK, replace the Spark Plug. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 3) .
3. 3) (K343) ASD RELAY OUTPUT2 CIRCUIT Turn the ignition off. Disconnect the Ignition Coil harness connector. Ignition on, engine not running. With a scan tool, actuate the ASD Relay. Using a 12-volt test light connected to ground, probe the (K343) ASD Relay Output 2 circuit in the Coil on Plug harness connector. Does the test light illuminate brightly? Yes Go To step 4) . No Repair the open or short to ground in the (K343) ASD Relay Output 2 circuit between the IPM and Coil harness connector. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . NOTE: Stop All Actuations.
4. 4) IGNITION COIL RESISTANCE Turn the ignition off. NOTE: The following resistance measurement should be taken at 70°-80° F. Measure the resistance of the Ignition Coil. Is the resistance between .55 to 1.5 ohms at 77°F (25°C) for the Ignition Coil being tested? Yes Go To step 5) . No Replace the Ignition Coil. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
5. 5) IGNITION COIL Using a 12-volt test light connected to a 12-volt source, probe the (K15) Coil Control No.4 circuit. Crank the engine for 5 seconds while observing the test light. What is the condition of the test light while cranking the engine? Brightly blinking. Replace the Ignition Coil. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . ON constantly. Go To step 6) . OFF constantly. Go To step 7) .
6. 6) (K15) COIL CONTROL NO.4 CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the C2 PCM harness connector. Measure the resistance between ground and the (K15) Coil Control No.4 circuit in the Ignition Coil harness connector. Is the resistance below 100 ohms? Yes Repair the short to ground in the (K15) Coil Control No.4 circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 8) .
7. 7) (K15) COIL CONTROL NO.4 CIRCUIT OPEN Turn the ignition off. Disconnect the C2 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 (K15) Coil Control No.4 circuit from the Ignition Coil harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To step 8) . No Repair the open in the (K15) Coil Control No.4 circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
8. 8) 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) .
9. 9) Visual and Physical Inspection Turn the ignition off. Remove the Spark Plug. Inspect the Spark Plug for the following conditions. Cracks Carbon Tracking Foreign Material Gap size out of specifications Loose or broken electrode NOTE: Lightly tap the bottom of the spark plug on a solid surface. The electrode in the spark plug should not move. Were any of the above conditions present? Yes Replace the Spark Plug. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Refer to «INTERMITTENT CONDITION»(ref-246952-S29354200532007011000000) .

Scheme 630

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

1. When Monitored: Engine running and battery voltage greater than 10 volts.

1. Set Condition: If PCM detects that the secondary ignition burn time is incorrect, too short, or not present, an error is detected. One Trip Fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 631

Scheme 632

Scheme 633

Scheme 634

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 Go To step 9) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
2. 2) Secondary Spark NOTE: Inspect the ignition coil for damaged, carbon tracking on the coil or a damage spark plug insulator boot. If a problem is found, replace the ignition coil. Turn the ignition off. Remove the ignition coil. Install a spark tester to the ignition coil. NOTE: On the 2.7 and 3.5L engines, cylinders 1, 3 and 5, it is necessary to remove the upper intake to access the ignition coils. Once the ignition coil has been removed from the cylinder head, the intake must be reinstalled to be able to crank the engine. Move the ignition coil harness connector through the slots in the upper intake and then connect the coil to the harness connector. Secure the upper intake to the lower intake in accordance with the service information. While cranking the engine observe the spark coming from the spark tester. NOTE: A crisp blue spark that is able to jump the gap of the spark tester should be generated. Is good spark generated? Yes Ensure the cylinder is operating properly. If OK, replace the Spark Plug. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 3) .
3. 3) (K343) ASD RELAY OUTPUT2 CIRCUIT Turn the ignition off. Disconnect the Ignition Coil harness connector. Ignition on, engine not running. With a scan tool, actuate the ASD Relay. Using a 12-volt test light connected to ground, probe the (K343) ASD Relay Output 2 circuit in the Coil on Plug harness connector. Does the test light illuminate brightly? Yes Go To step 4) . No Repair the open or short to ground in the (K343) ASD Relay Output 2 circuit between the IPM and Coil harness connector. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . NOTE: Stop All Actuations.
4. 4) IGNITION COIL RESISTANCE Turn the ignition off. NOTE: The following resistance measurement should be taken at 70°-80° F. Measure the resistance of the Ignition Coil. Is the resistance between .55 to 1.5 ohms at 77°F (25°C) for the Ignition Coil being tested? Yes Go To step 5) . No Replace the Ignition Coil. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
5. 5) IGNITION COIL Using a 12-volt test light connected to a 12-volt source, probe the (K16) Coil Control No.5 circuit. Crank the engine for 5 seconds while observing the test light. What is the condition of the test light while cranking the engine? Brightly blinking. Replace the Ignition Coil. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . ON constantly. Go To step 6) . OFF constantly. Go To step 7) .
6. 6) (K16) COIL CONTROL NO.5 CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the C2 PCM harness connector. Measure the resistance between ground and the (K16) Coil Control No.5 circuit in the Ignition Coil harness connector. Is the resistance below 100 ohms? Yes Repair the short to ground in the (K16) Coil Control No.5 circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 8) .
7. 7) (K16) COIL CONTROL NO.5 CIRCUIT OPEN Turn the ignition off. Disconnect the C2 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 (K16) Coil Control No.5 circuit from the Ignition Coil harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To step 8) . No Repair the open in the (K16) Coil Control No.5 circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
8. 8) 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) .
9. 9) Visual and Physical Inspection Turn the ignition off. Remove the Spark Plug. Inspect the Spark Plug for the following conditions. Cracks Carbon Tracking Foreign Material Gap size out of specifications Loose or broken electrode NOTE: Lightly tap the bottom of the spark plug on a solid surface. The electrode in the spark plug should not move. Were any of the above conditions present? Yes Replace the Spark Plug. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Refer to «INTERMITTENT CONDITION»(ref-246952-S29354200532007011000000) .

Scheme 635

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

1. When Monitored: Engine running and battery voltage greater than 10 volts.

1. Set Condition: If PCM detects that the secondary ignition burn time is incorrect, too short, or not present, an error is detected. One Trip Fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 636

Scheme 637

Scheme 638

Scheme 639

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 Go To step 9) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
2. 2) Secondary Spark NOTE: Inspect the ignition coil for damage, carbon tracking on the coil or a damaged spark plug insulator boot. If a problem is found, replace the ignition coil. Turn the ignition off. Remove the ignition coil. Install a spark tester to the ignition coil. NOTE: On the 2.7 and 3.5L engines, cylinders 1, 3 and 5, it is necessary to remove the upper intake to access the ignition coils. Once the ignition coil has been removed from the cylinder head, the intake must be reinstalled to be able to crank the engine. Move the ignition coil harness connector through the slots in the upper intake and then connect the coil to the harness connector. Secure the upper intake to the lower intake in accordance with the service information. While cranking the engine observe the spark coming from the spark tester. NOTE: A crisp blue spark that is able to jump the gap of the spark tester should be generated. Is good spark generated? Yes Ensure the cylinder is operating properly. If OK, replace the Spark Plug. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 3) .
3. 3) (K343) ASD RELAY OUTPUT2 CIRCUIT Turn the ignition off. Disconnect the Ignition Coil harness connector. Ignition on, engine not running. With a scan tool, actuate the ASD Relay. Using a 12-volt test light connected to ground, probe the (K343) ASD Relay Output 2 circuit in the Coil on Plug harness connector. Does the test light illuminate brightly? Yes Go To step 4) . No Repair the open or short to ground in the (K343) ASD Relay Output 2 circuit between the IPM and Coil harness connector. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . NOTE: Stop All Actuations.
4. 4) IGNITION COIL RESISTANCE Turn the ignition off. NOTE: The following resistance measurement should be taken at 70°-80° F. Measure the resistance of the Ignition Coil. Is the resistance between .55 to 1.5 ohms at 77°F (25°C) for the Ignition Coil being tested? Yes Go To step 5) . No Replace the Ignition Coil. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
5. 5) IGNITION COIL Using a 12-volt test light connected to a 12-volt source, probe the (K10) Coil Control No.6 circuit. Crank the engine for 5 seconds while observing the test light. What is the condition of the test light while cranking the engine? Brightly blinking. Replace the Ignition Coil. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . ON constantly. Go To step 6) . OFF constantly. Go To step 7) .
6. 6) (K10) COIL CONTROL NO.6 CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the C2 PCM harness connector. Measure the resistance between ground and the (K10) Coil Control No.6 circuit in the Ignition Coil harness connector. Is the resistance below 100 ohms? Yes Repair the short to ground in the (K10) Coil Control No.6 circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 8) .
7. 7) (K10) COIL CONTROL NO.6 CIRCUIT OPEN Turn the ignition off. Disconnect the C2 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 (K10) Coil Control No.6 circuit from the Ignition Coil harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To step 8) . No Repair the open in the (K10) Coil Control No.6 circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
8. 8) 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) .
9. 9) Visual and Physical Inspection Turn the ignition off. Remove the Spark Plug. Inspect the Spark Plug for the following conditions. Cracks Carbon Tracking Foreign Material Gap size out of specifications Loose or broken electrode NOTE: Lightly tap the bottom of the spark plug on a solid surface. The electrode in the spark plug should not move. Were any of the above conditions present? Yes Replace the Spark Plug. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Refer to «INTERMITTENT CONDITION»(ref-246952-S29354200532007011000000) .

Scheme 640

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

1. When Monitored: Engine running and battery voltage greater than 10 volts.

1. Set Condition: If PCM detects that the secondary ignition burn time is incorrect, too short, or not present, an error is detected. One Trip Fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 641

Scheme 642

Scheme 643

Scheme 644

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 Go To step 9) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
2. 2) Secondary Spark NOTE: Inspect the ignition coil for damage, carbon tracking on the coil or a damaged spark plug insulator boot. If a problem is found, replace the ignition coil. Turn the ignition off. Remove the ignition coil. Install a spark tester to the ignition coil. While cranking the engine observe the spark coming from the spark tester. NOTE: A crisp blue spark that is able to jump the gap of the spark tester should be generated. Is good spark generated? Yes Ensure the cylinder is operating properly. If OK, replace the Spark Plug. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 3) .
3. 3) (K343) ASD RELAY OUTPUT2 CIRCUIT Turn the ignition off. Disconnect the Ignition Coil harness connector. Ignition on, engine not running. With a scan tool, actuate the ASD Relay. Using a 12-volt test light connected to ground, probe the (K343) ASD Relay Output 2 circuit in the Coil on Plug harness connector. Does the test light illuminate brightly? Yes Go To step 4) . No Repair the open or short to ground in the (K343) ASD Relay Output 2 circuit between the IPM and Coil harness connector. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . NOTE: Stop All Actuations.
4. 4) IGNITION COIL RESISTANCE Turn the ignition off. NOTE: The following resistance measurement should be taken at 70°-80° F. Measure the resistance of the Ignition Coil. Is the resistance between .55 to 1.5 ohms at 77°F (25°C) for the Ignition Coil being tested? Yes Go To step 5) . No Replace the Ignition Coil. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
5. 5) IGNITION COIL Using a 12-volt test light connected to a 12-volt source, probe the (K97) Coil Control No.7 circuit. Crank the engine for 5 seconds while observing the test light. What is the condition of the test light while cranking the engine? Brightly blinking. Replace the Ignition Coil. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . ON constantly. Go To step 6) . OFF constantly. Go To step 7) .
6. 6) (K97) COIL CONTROL NO.7 CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the C2 PCM harness connector. Measure the resistance between ground and the (K97) Coil Control No.7 circuit in the Ignition Coil harness connector. Is the resistance below 100 ohms? Yes Repair the short to ground in the (K97) Coil Control No.7 circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 8) .
7. 7) (K97) COIL CONTROL NO.7 CIRCUIT OPEN Turn the ignition off. Disconnect the C2 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 (K97) Coil Control No.7 circuit from the Ignition Coil harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To step 8) . No Repair the open in the (K97) Coil Control No.7 circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
8. 8) 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) .
9. 9) Visual and Physical Inspection Turn the ignition off. Remove the Spark Plug. Inspect the Spark Plug for the following conditions. Cracks Carbon Tracking Foreign Material Gap size out of specifications Loose or broken electrode NOTE: Lightly tap the bottom of the spark plug on a solid surface. The electrode in the spark plug should not move. Were any of the above conditions present? Yes Replace the Spark Plug. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Refer to «INTERMITTENT CONDITION»(ref-246952-S29354200532007011000000) .

Scheme 645

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

1. When Monitored: Engine running and battery voltage greater than 10 volts.

1. Set Condition: If PCM detects that the secondary ignition burn time is incorrect, too short, or not present, an error is detected. One Trip Fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 646

Scheme 647

Scheme 648

Scheme 649

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 Go To step 9) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
2. 2) Secondary Spark NOTE: Inspect the ignition coil for damage, carbon tracking on the coil or a damaged spark plug insulator boot. If a problem is found, replace the ignition coil. Turn the ignition off. Remove the ignition coil. Install a spark tester to the ignition coil. While cranking the engine observe the spark coming from the spark tester. NOTE: A crisp blue spark that is able to jump the gap of the spark tester should be generated. Is good spark generated? Yes Ensure the cylinder is operating properly. If OK, replace the Spark Plug. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 3) .
3. 3) (K343) ASD RELAY OUTPUT2 CIRCUIT Turn the ignition off. Disconnect the Ignition Coil harness connector. Ignition on, engine not running. With a scan tool, actuate the ASD Relay. Using a 12-volt test light connected to ground, probe the (K343) ASD Relay Output 2 circuit in the Coil on Plug harness connector. Does the test light illuminate brightly? Yes Go To step 4) . No Repair the open or short to ground in the (K343) ASD Relay Output 2 circuit between the IPM and Coil harness connector. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . NOTE: Stop All Actuations.
4. 4) IGNITION COIL RESISTANCE Turn the ignition off. NOTE: The following resistance measurement should be taken at 70°-80° F. Measure the resistance of the Ignition Coil. Is the resistance between .55 to 1.5 ohms at 77°F (25°C) for the Ignition Coil being tested? Yes Go To step 5) . No Replace the Ignition Coil. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
5. 5) IGNITION COIL Using a 12-volt test light connected to a 12-volt source, probe the (K98) Coil Control No.8 circuit. Crank the engine for 5 seconds while observing the test light. What is the condition of the test light while cranking the engine? Brightly blinking. Replace the Ignition Coil. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . ON constantly. Go To step 6) . OFF constantly. Go To step 7) .
6. 6) (K98) COIL CONTROL NO.8 CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the C2 PCM harness connector. Measure the resistance between ground and the (K98) Coil Control No.8 circuit in the Ignition Coil harness connector. Is the resistance below 100 ohms? Yes Repair the short to ground in the (K98) Coil Control No.8 circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 8) .
7. 7) (K98) COIL CONTROL NO.8 CIRCUIT OPEN Turn the ignition off. Disconnect the C2 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 (K98) Coil Control No.8 circuit from the Ignition Coil harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To step 8) . No Repair the open in the (K98) Coil Control No.8 circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
8. 8) 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) .
9. 9) Visual and Physical Inspection Turn the ignition off. Remove the Spark Plug. Inspect the Spark Plug for the following conditions. Cracks Carbon Tracking Foreign Material Gap size out of specifications Loose or broken electrode NOTE: Lightly tap the bottom of the spark plug on a solid surface. The electrode in the spark plug should not move. Were any of the above conditions present? Yes Replace the Spark Plug. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Refer to «INTERMITTENT CONDITION»(ref-246952-S29354200532007011000000) .

Scheme 650

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

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

1. Set Condition: The battery sensed voltage is 1 volt below the charging goal for 13.47 seconds. The PCM senses the battery voltage turns off the field driver and senses the battery voltage again. If the voltages are the same, the code is set. One Trip Fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 651

Scheme 652

Scheme 653

Scheme 654

Scheme 655

1. 1) ACTIVE DTC NOTE: Inspect the vehicle for aftermarket accessories that may exceed the Generator System output. Ignition on, engine not running. NOTE: The battery must be fully charged. NOTE: The Generator belt tension and condition must be checked before continuing. With a scan tool, read DTCs. With a scan tool, erase DTCs. Start the engine. Allow the idle to stabilize. With the 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 - 3»(ref-246912-S01404192392007011000000) .
2. 2) FUSED B+ CIRCUIT HIGH RESISTANCE 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. Ignition on, engine not running. NOTE: Make sure all wires are clear of the engine's moving parts. Measure the voltage between the Generator B+ Output Terminal and the Battery+ Post. Start the engine. Is the voltage above 0.4 of a volt? Yes Repair the excessive resistance in the battery positive circuit between the Generator and Battery. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 3»(ref-246912-S01404192392007011000000) . No Go To step 3) .
3. 3) EXCESSIVE RESISTANCE IN THE CASE GROUND 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. Start the engine. Warm the engine to operating temperature. NOTE: Make sure all wires are clear of the engine's moving parts. Measure the voltage between the Generator Case and Battery ground post. Is the voltage above 0.1 of a volt? Yes Repair the excessive resistance in the Generator Case Ground. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 3»(ref-246912-S01404192392007011000000) . No Go To step 4) .
4. 4) GENERATOR OPERATION Turn the ignition off. Disconnect the Generator Field harness connector. Using a 12-volt test light, jump across the Generator Field harness connector. Ignition on, engine not running. With a scan tool, actuate the Generator Field Driver. Does the test light illuminate brightly and flash on and off? Yes Replace the Generator. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 3»(ref-246912-S01404192392007011000000) . No Go To step 5) .
5. 5) (K20) GEN FIELD CONTROL CIRCUIT SHORTED TO BATTERY VOLTAGE Turn the ignition off. Disconnect the PCM harness connectors. Ignition on, engine not running. Measure the voltage on the (K20) Gen Field Control circuit in the Generator Field harness connector. Is the voltage above 1.0 volt? Yes Repair the short to battery voltage in the (K20) Gen Field Control circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 3»(ref-246912-S01404192392007011000000) . No Go To step 6) .
6. 6) (K20) FIELD CONTROL 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 (K20) Gen Field Control circuit from the Generator Field harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To step 7) . No Repair the open in the (K20) Gen Field Control circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 3»(ref-246912-S01404192392007011000000) .
7. 7) (K20) GEN FIELD CONTROL CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (K20) Gen Field Control circuit in the Generator Field harness connector. Is the resistance below 100 ohms? Yes Repair the short to ground in the (K20) Gen Field Control circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 3»(ref-246912-S01404192392007011000000) . No Go To step 8) .
8. 8) (Z904) GROUND CIRCUIT OPEN Using a 12-volt test light connected to battery voltage, probe the (Z904) Ground circuit in the Generator Field harness connector. Does the test light illuminate brightly? Yes Go To step 9) . No Repair the open in the (Z904) Generator Ground circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 3»(ref-246912-S01404192392007011000000) .
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 - 3»(ref-246912-S01404192392007011000000) . No Replace and program the Powertrain Control Module. Refer to «MODULE-POWERTRAIN CONTROL»(ref-246912-S21217387632007011000000) . Perform «NGC POWERTRAIN VERIFICATION TEST VER - 3»(ref-246912-S01404192392007011000000) .

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

1. Set Condition: O2 sensor readings on Bank 1 side indicate a lean condition while in 4 cylinder mode.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

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

1. Set Condition: When the PCM recognizes a problem with the Solenoid Control circuit.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 656

Scheme 657

Scheme 658

Scheme 659

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.1 Turn the ignition off. Gain access to the MDS Solenoid No.1. Disconnect the MDS Solenoid No.1 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 (K451) MDS Solenoid No.1 Control circuit. With a scan tool, actuate the MDS Solenoid 1. Does the 12-volt test light flash on and off? Yes Replace the MDS Solenoid No.1. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . 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.1 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) (K451) MDS SOLENOID NO.1 CONTROL CIRCUIT SHORTED TO BATTERY VOLTAGE Disconnect the PCM harness connector. Ignition on, engine not running. Measure the voltage on the (K451) MDS Solenoid No.1 Control circuit in the MDS Solenoid No.1 connector. Is the voltage above 1.0 volt? Yes Repair the short to battery voltage in the (K451) MDS Solenoid No.1 Control circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 5) .
5. 5) (K451) MDS SOLENOID NO.1 CONTROL CIRCUIT SHORTED TO GROUND Turn the ignition off. Measure the resistance between ground and the (K451) MDS Solenoid No.1Control circuit in the MDS Solenoid No.1 harness connector. Is the resistance below 100 ohms? Yes Repair the short to ground in the (K451) MDS Solenoid No.1 Control circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Go To step 6) .
6. 6) (K451) MDS SOLENOID NO.1 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 (K451) MDS Solenoid No.1 Control circuit from the MDS Solenoid No.1 harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To step 7) . No Repair the open in the (K451) MDS Solenoid No.1 Control 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: Transition from 8 to 4 cylinder mode.

1. Set Condition: The MDS fails to disengage for cylinder 1.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 660

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.1 CONTROL CIRCUIT Turn the ignition off. Disconnect the MDS Solenoid No.1 harness connector. Ignition on, engine not running. Turn off all accessories. Using a 12-volt test light connected to ground, probe the (K451) MDS Solenoid No.1 Control circuit. Does the 12-volt test light illuminate? Yes Go To step 3) . No Go To step 4) .
3. 3) (K451) MDS SOLENOID NO.1 CONTROL CIRCUIT SHORTED TO VOLTAGE Turn the ignition off. Disconnect the PCM harness connectors. Turn the ignition on. Measure the volage on (K451) MDS Solenoid No.1 Control circuit in the MDS Solenoid No.1 harness connector. Is voltage present? Yes Repair the short to voltage in the (K451) MDS Solenoid No.1 Control circuit. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary. 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) .
4. 4) MDS SOLENOID 1 Turn the ignition off. Remove the Intake Manifold per Service Information. Turn the ignition on. With the scan tool actuate the MDS Solenoid 1. Can you feel and hear the Solenoid Actuating? Yes Go To step 5) . 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 1. If the passages are not clogged with debris, replace the MDS Solenoid 1. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .
5. 5) 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. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . No Replace both sets of lifters if no other possible causes remain. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) .

Scheme 661

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

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

1. Set Condition: When the PCM recognizes a problem with the Solenoid Control circuit.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 662

Scheme 663

Scheme 664

Scheme 665

Scheme 666

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 Replace the MDS Solenoid No.4. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . 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 BATTERY VOLTAGE Disconnect the PCM harness connector. Ignition on, engine not running. Measure the voltage on the (K452) MDS Solenoid No.4 Control circuit in the MDS Solenoid No.4 harness connector. Is the voltage above 1.0 volt? Yes Repair the short to battery voltage 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 SHORTED TO GROUND Turn the ignition off. 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 6) .
6. 6) (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 7) . No Repair the open in the (K452) MDS Solenoid No.4 Control 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: Transition from 8 to 4 cylinder mode.

1. Set Condition: The MDS fails to disengage for cylinder 4.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

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

1. Set Condition: When the PCM recognizes a problem with the Solenoid Control circuit.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 667

Scheme 668

Scheme 669

Scheme 670

Scheme 671

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 No.6. Does the 12-volt test light flash on and off? Yes Replace the MDS Solenoid No.6. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . 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 CONTROL NO.6 CIRCUIT SHORTED TO BATTERY VOLTAGE Disconnect the PCM harness connector. Ignition on, engine not running. Measure the voltage on the (K453) MDS Solenoid No.6 Control circuit in the MDS Solenoid No.6 connector. Is the voltage above 1.0 volt? Yes Repair the short to battery voltage 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 SHORTED TO GROUND 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 6) .
6. 6) (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 7) . No Repair the open in the (K453) MDS Solenoid No.6 Control 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: Transition from 8 to 4 cylinder mode.

1. Set Condition: The MDS fails to disengage for cylinder 6.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

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

1. Set Condition: When the PCM recognizes a problem with the Solenoid Control circuit.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 672

Scheme 673

Scheme 674

Scheme 675

Scheme 676

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 No.7. Does the 12-volt test light flash on and off? Yes Replace the MDS Solenoid No.7. Perform «NGC POWERTRAIN VERIFICATION TEST VER - 5»(ref-246912-S34084483822007011000000) . 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 BATTERY VOLTAGE Disconnect the PCM harness connector. Ignition on, engine not running. Measure the voltage on the (K454) MDS Solenoid No.7 Control circuit in the MDS Solenoid No.7 harness connector. Is the voltage above 1.0 volt? Yes Repair the short to battery voltage 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 SHORTED TO GROUND Turn the ignition off. 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 6) .
6. 6) (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 7) . No Repair the open in the (K454) MDS Solenoid No.7 Control 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: Transition from 8 to 4 cylinder mode.

1. Set Condition: The MDS fails to disengage for cylinder 7.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

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

1. Set Condition: O2 sensor readings on Bank 2 side indicate a lean condition while in 4 cylinder mode.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. When Monitored: Ignition run time is greater than 1 second. Battery voltage between 9 and 16 volts. Engine run time greater than 3 seconds.

1. Set Condition: The PCM loses communication over the CAN C Bus circuit. The circuit is continuously monitored.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Refer to ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS for diagnostic procedures and for further possible causes.

1. When Monitored: Ignition run time is greater than 1 second. Battery voltage between 9 and 16 volts. Engine run time greater than 3 seconds.

1. Set Condition: The PCM doesn't receive a Bus Message from the Transmission Control Module for 7 consecutive seconds. The circuit is continuously monitored.

Refer to ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS for diagnostic procedures and for further possible causes.

1. When Monitored: Ignition run time is greater than 1 second. Battery voltage between 9 and 16 volts. Engine run time greater than 3 seconds.

1. Set Condition: The PCM doesn't receive a Electric Gear Shift Module message over the CAN C circuit. The circuit is continuously monitored.

Refer to ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS for diagnostic procedures and for further possible causes.