Ignition System - Electrical Diagnostics: Other Dodge Charger V

Monitor Conditions

1. When Monitored: Anytime the ignition input is compared against the CAN B Bus ignition status message.

Set Conditions

1. Set Condition: The Front Control Module will set this DTC if the CAN bus message and the hardwired ignition circuit do not match.

Possible Causes

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1. CHECK FOR ACTIVE DTC NOTE: If B2104 or B2105 are active, perform those tests first before proceeding. NOTE: Check the rear PDC fuses. An open fuse can cause this DTC to set. If open refer to appropriate SYSTEM WIRING DIAGRAMS article to help isolate a possible shorted circuit. With the scan tool, read the active DTC's. Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 90 seconds. With the scan tool, read the active DTC's. Does the scan tool display this DTC as active? Yes Go To 2 . No If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.
2. CHECK THE (F20) FUSED IGNITION SWITCH OUTPUT CIRCUIT FOR AN OPEN Turn the ignition off. Remove the Fuse 29 from the rear PDC. Turn the ignition on. Measure the voltage of the (F20) Fused Ignition Switch Output circuit (input side of fuse). Is the voltage above 10.0 volts? Yes Go To 3 . No Go To 4 .
3. (F202) FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN Turn the ignition off. NOTE: Check Fuse 29 and 8 in the rear PDC for an open. Remove the FCM from the IPM. NOTE: Install the fuse in the rear PDC. Turn the ignition on. Measure the voltage of the (F202) Fused Ignition Switch Output circuit. Is the voltage above 10.0 volts? Yes Inspect the wiring and connectors for damage or shorted circuits. If OK, replace and program the Front Control Module in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) . No Repair the (F202) Ignition Switch Output circuit for an open between the rear PDC and the IPM. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) .
4. (A106) FUSED B+ CIRCUIT OPEN Turn the ignition off. NOTE: Check Fuse 8 in the rear PDC for an open. Disconnect the Ignition Switch harness connector. Measure the voltage of the (A106) Fused B+ circuit. Is the voltage above 10.0 volts? Yes Repair the (F20) Fused Ignition Switch Output circuit for an open between the Ignition Switch and the rear PDC. If OK, replace the Ignition Switch in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) . No Repair the (A106) Fused B+ circuit for an open. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) .

1. When Monitored: With the ignition on.

1. Set Condition: The Front Control Module will set this DTC within 500ms if the ignition unlock run/start circuit voltage is less than the expected value.

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1. CHECK FOR ACTIVE DTC With the scan tool, read the active DTC's. Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 90 seconds. With the scan tool, read the active DTC's. Does the scan tool display this DTC as active? Yes Go To 2 . No If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.
2. SHIFTER LEVER ASSEMBLY Turn the ignition off. Disconnect the Shifter Lever Assembly harness connector. Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 90 seconds. With the scan tool, read the active FCM DTC's. Does the scan tool display this DTC as active? Yes Go To 3 . No Replace the Shifter Lever Assembly in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) .
3. (F902) IGNITION UNLOCK RUN START CIRCUIT SHORTED TO GROUND Turn the ignition off. Remove the FCM from the IPM. Measure the resistance between ground and the (F902) Ignition Unlock Run Start circuit. Is the resistance below 100.0 ohms? Yes Repair the (F902) Ignition Unlock Run Start circuit for a short to ground. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) . No Inspect the wiring and connectors for damage or shorted circuits. If OK, replace and program the Front Control Module in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) .

1. When Monitored: With the ignition on or off and with the FCM awake.

1. Set Condition: The Front Control Module will set this DTC within 2 seconds if the ignition unlock run/start circuit voltage is not what the expected value should be.

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1. 1) CHECK FOR ACTIVE DTC With the scan tool, read the active DTC's. Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 90 seconds then turn the ignition off. With the scan tool, read the active DTC's. Does the scan tool display this DTC as active? Yes Go To 2 . No If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.
2. (F902) IGNITION UNLOCK RUN START CIRCUIT SHORTED TO VOLTAGE Disconnect the Shifter Lever Assembly harness connector. Cycle the ignition switch from off to on then back to off. NOTE: The ignition switch must be in the off position when performing the following step. Using a 12-volt test light connected to ground, check the (F902) Ignition Unlock Run Start circuit. Does the test light illuminate brightly? Yes Repair the (F902) Ignition Unlock Run Start circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) . No Go To 3 .
3. SHIFTER LEVER ASSEMBLY Turn the ignition on. With the test light still connected from the previous step, check the (F902) Ignition Unlock Run Start circuit. Does the test light illuminate brightly? Yes Replace the Shifter Lever Assembly in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) . No Go To 4 .
4. (F902) IGNITION UNLOCK RUN START CIRCUIT OPEN Turn the ignition off. Remove the FCM from the IPM. Measure the resistance of the (F902) Ignition Unlock Run Start circuit between the Shifter Lever Assembly and the FCM-PDM connector. Is the resistance below 5.0 ohms? Yes Inspect the wiring and connectors for damage or shorted circuits. If OK, replace and program the Front Control Module in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) . No Repair the (F902) Ignition Unlock Run Start circuit for an open. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) .

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1. When Monitored: With the ignition on.

1. Set Condition: The Front Control Module will set this DTC within 500ms if the (P307) Accessory Delay Relay Control circuit is open or shorted to ground.

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1. CHECK FOR ACTIVE DTC With the scan tool, read the active DTC's. Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 90 seconds. With the scan tool, read the active DTC's. Does the scan tool display this DTC as active? Yes Go To 2 . No If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.
2. ACCESSORY DELAY RELAY Turn the ignition off. Install a substitute relay in place of the original Accessory Delay Relay. Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 90 seconds. With the scan tool, read the active FCM DTC's. Does the scan tool display this DTC as active? Yes Go To 3 . No Replace the original Accessory Delay Relay. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) .
3. (P307) ACCESSORY DELAY RELAY CONTROL CIRCUIT OPEN Turn the ignition off. Remove the FCM from the IPM. Remove the Accessory Delay Relay from the Rear Power Distribution Module. Measure the resistance of the Accessory Delay Relay Control circuit from the Front Control Module PDM connector to the Relay connector. Is the resistance below 10.0 ohms? Yes Go To 4 . No Repair the Accessory Delay Relay Control circuit for an open. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) .
4. (P307) ACCESSORY DELAY RELAY CONTROL CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (P307) Accessory Delay Relay Control circuit at the relay cavity (85). Is the resistance below 100.0 ohms? Yes Repair the (P307) Accessory Delay Relay Control circuit for a short to ground. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) . No Inspect the wiring and connectors for damage or shorted circuits. If OK, replace and program the Front Control Module in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) .

1. When Monitored: With the ignition on.

1. Set Condition: The Front Control Module will set this DTC within 500ms if the (P307) Accessory Delay Relay Control circuit is shorted to voltage.

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1. CHECK FOR ACTIVE DTC With the scan tool, read the active DTC's. Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 90 seconds. With the scan tool, read the active DTC's. Does the scan tool display this DTC as active? Yes Go To 2 . No If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.
2. ACCESSORY DELAY RELAY Turn the ignition off. Install a substitute relay in place of the original Accessory Delay Relay. Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 90 seconds. With the scan tool, read the active FCM DTC's. Does the scan tool display this DTC as active? Yes Go To 3 . No Replace the original Accessory Delay Relay. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) .
3. (P307) ACCESSORY DELAY RELAY CONTROL CIRCUIT SHORTED TO VOLTAGE Turn the ignition off. Remove the FCM from the IPM. Remove the Accessory Delay Relay from the Rear Power Distribution Module. Turn the ignition on. Measure the voltage of the (P307) Accessory Delay Relay Control circuit at the relay connector (cavity 85). Is there any voltage present? Yes Repair the (P307) Accessory Delay Relay Control circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) . No Inspect the wiring and connectors for damage or shorted circuits. If OK, replace and program the Front Control Module in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) .

1. When Monitored: With the ignition on.

1. Set Condition: The Front Control Module will set this DTC within 500ms if the (P307) Accessory Delay Relay Control circuit is open.

1. When Monitored: With the ignition on.

1. Set Condition: The Front Control Module will set this DTC within 500ms if the (F921) or (F923) Run Relay Control circuit voltage is open or shorted to ground.

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1. CHECK FOR ACTIVE DTC With the scan tool, read the active DTC's. Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 90 seconds. With the scan tool, read the active DTC's. Does the scan tool display this DTC as active? Yes Go To 2 . No If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.
2. RUN RELAY Turn the ignition off. Install a substitute Run Relay in place of the original Run Relay. Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 90 seconds. With the scan tool, read the active FCM DTC's. Does the scan tool display this DTC as active? Yes Go To 3 . No Replace the original Run Relay. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) .
3. (F921) or (F923) RUN RELAY CONTROL CIRCUIT OPEN Turn the ignition off. Remove the FCM from the IPM. Remove the Run Relay from the Rear Power Distribution Module. NOTE: This circuit contains a diode. When checking resistance of this circuit the red ohmmeter lead must be connected to the Run Relay cavity (85) and the black ohmmeter lead must be connected to the FCM-PDM connector. NOTE: Ensure the diode is installed correctly in the Rear Power Distribution Module. Measure the resistance of the Run Relay Control circuit. Is the resistance below 10.0 ohms? Yes Go To 4) . No Repair the Run Relay Control circuit for an open. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) .
4. 4) (F921) RUN RELAY CONTROL CIRCUIT SHORTED TO GROUND NOTE: This circuit contains a diode. When checking for a short to ground you must check both sides of the diode. NOTE: Ensure the diode is installed correctly in the Rear Power Distribution Module. Measure the resistance between ground and the (F921) Run Relay Control circuit at the Run Relay cavity (85). Is the resistance below 10.0 ohms? Yes Repair the (F921) Run Relay Control circuit for a short to ground. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) . No Go To 5) .
5. 5) (F923) RUN RELAY CONTROL CIRCUIT SHORTED TO GROUND NOTE: This circuit contains a diode. When checking for a short to ground you must check both sides of the diode. NOTE: Ensure the diode is installed correctly in the Rear Power Distribution Module. Measure the resistance between ground and the (F923) Run Relay Control circuit at the FCM-PDM connector. Is the resistance below 10.0 ohms? Yes Repair the (F923) Run Relay Control circuit for a short to ground. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) . No Inspect the wiring and connectors for damage or shorted circuits. If OK, replace and program the Front Control Module in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) .

1. When Monitored: With the ignition on.

1. Set Condition: The Front Control Module will set this DTC within 500ms if the (F921) or (F923) Run Relay Control circuit voltage is shorted to voltage.

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1. 1) CHECK FOR ACTIVE DTC With the scan tool, read the active DTC's. Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 90 seconds. With the scan tool, read the active DTC's. Does the scan tool display this DTC as active? Yes Go To 2) . No If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.
2. 2) RUN RELAY Turn the ignition off. Install a substitute Run Relay in place of the original Run Relay. Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 90 seconds. With the scan tool, read the active FCM DTC's. Does the scan tool display this DTC as active? Yes Go To 3) . No Replace the original Run Relay. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) .
3. 3) (F921) RUN RELAY CONTROL CIRCUIT SHORTED TO VOLTAGE NOTE: This circuit contains a diode. When checking for a short to voltage you must check both sides of the diode. NOTE: Ensure the diode is installed correctly in the Rear Power Distribution Module. Turn the ignition off. Remove the FCM from the IPM. Remove the Run Relay from the Rear Power Distribution Module. Turn the ignition on. Measure the voltage of the (F921) Run Relay Control circuit at the Run Relay cavity (85). Is the voltage above 10.0 volts? Yes Repair the (F921) Run Relay Control circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) . No Go To 4) .
4. 4) (F923) RUN RELAY CONTROL CIRCUIT SHORTED TO VOLTAGE NOTE: This circuit contains a diode. When checking for a short to voltage you must check both sides of the diode. NOTE: Ensure the diode is installed correctly in the Rear Power Distribution Module. Measure the voltage of the (F923) Run Relay Control circuit at the FCM-PDM connector. Is the voltage above 10.0 volts? Yes Repair the (F923) Run Relay Control circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) . No Inspect the wiring and connectors for damage or shorted circuits. If OK, replace and program the Front Control Module in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) .

1. When Monitored: With the ignition on.

1. Set Condition: The Front Control Module will set this DTC within 500ms if the (F921) or (F923) Run Relay Control circuit voltage is open or shorted to ground.