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Ignition System - Electrical Diagnostics: Diagnosis Dodge Charger V

Ignition System 2 illustrations ~826 words

DIAGNOSTIC CODE INDEX

DTCDescription
B2100IGNITION RUN/START INPUT CIRCUIT PERFORMANCE
B2104IGNITION UNLOCK RUN/START CONTROL CIRCUIT LOW
B2105IGNITION UNLOCK RUN/START CONTROL CIRCUIT HIGH
B211EIGNITION RUN/ACC/PAD CONTROL CIRCUIT LOW
B211FIGNITION RUN/ACC/PAD CONTROL CIRCUIT HIGH
B2120IGNITION RUN/ACC/PAD CONTROL CIRCUIT OPEN
B2122IGNITION RUN CONTROL CIRCUIT LOW
B2123IGNITION RUN CONTROL CIRCUIT HIGH
B2124IGNITION RUN CONTROL CIRCUIT OPEN

DIAGNOSTIC CODE INDEX

Scheme 1

Scheme 1: Circuit Schematic
Scheme 1: Circuit Schematic

Diagnostic Test

  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) 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. 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? 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) . 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) .

Scheme 2

Scheme 2: Circuit Schematic
Scheme 2: Circuit Schematic
  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. (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. (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) .

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