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Ignition System - Electrical Diagnostics: Diagnosis Jeep Commander I

Ignition System 1 illustration ~1151 words

DIAGNOSTIC CODE INDEX

DTCDescription
B2100IGNITION RUN/START INPUT CIRCUIT PERFORMANCE
B211AIGNITION RUN/ACC/SPAD CONTROL CIRCUIT LOW
B211BIGNITION RUN/ACC/SPAD 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
B2133IGNITION RUN/START (REMOTE START) CONTROL CIRCUIT LOW
B2134IGNITION RUN/START (REMOTE START) CONTROL CIRCUIT HIGH
B2135IGNITION RUN/START (REMOTE START) CONTROL CIRCUIT OPEN
B213BIGNITION RUN (REMOTE START) CONTROL CIRCUIT LOW
B213CIGNITION RUN (REMOTE START) CONTROL CIRCUIT HIGH
B213DIGNITION RUN (REMOTE START) CONTROL CIRCUIT OPEN
B213FIGNITION START (REMOTE START) CONTROL CIRCUIT LOW
B2140IGNITION START (REMOTE START) CONTROL CIRCUIT HIGH
B2184IGNITION UNLOCK RUN/START CONTROL CIRCUIT LOW
B2185IGNITION UNLOCK RUN/START CONTROL CIRCUIT HIGH

DIAGNOSTIC CODE INDEX

Scheme 5

Scheme 5: Circuit Schematic
Scheme 5: 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) RUN/ACCESSORY DELAY RELAY Turn the ignition off. Install a substitute relay in place of the original Run/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 Run/Accessory Delay Relay. Perform «BODY VERIFICATION TEST»(ref-288232-S30638820392008062000000) .
  3. 3) (P305) ACCESSORY DELAY RELAY CONTROL CIRCUIT OPEN Turn the ignition off. Remove the FCM from the Integrated Power Module. Remove the Run/Accessory Delay Relay from the Junction Block. Measure the resistance of the (P305) Accessory Delay Relay Control circuit from the FCM-IPM connector to the relay connector. Is the resistance below 10.0 ohms? No Repair the (P305) Accessory Delay Relay Control circuit for an open. Perform «BODY VERIFICATION TEST»(ref-288232-S30638820392008062000000) . 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»(ref-288232-S30638820392008062000000) .
  1. 1) CHECK FOR ACTIVE DTC AND DETERMINE FCM CONFIGURATION With the scan tool, read the active DTC's. Cycle the ignition switch from off to on at least 5 times, leaving the ignition on for a minimum of 90 seconds per cycle. With the scan tool, read the active DTC's. Does the scan tool display this DTC as active? Yes With the scan tool enter program network configuration and program the FCM to the vehicle configuration, erase DTC's and retest. 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. Erase the stored DTCs.
  1. 1) CHECK FOR ACTIVE DTC AND DETERMINE FCM CONFIGURATION With the scan tool, read the active DTC's. Cycle the ignition switch from off to on at least 5 times, leaving the ignition on for a minimum of 90 seconds per cycle. With the scan tool, read the active DTC's. Does the scan tool display this DTC as active? Yes With the scan tool enter program network configuration and program the FCM to the vehicle configuration, erase DTC's and retest. 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. Erase the stored DTCs.
  1. 1) CHECK FOR ACTIVE DTC AND DETERMINE FCM CONFIGURATION With the scan tool, read the active DTC's. Cycle the ignition switch from off to on at least 5 times, leaving the ignition on for a minimum of 90 seconds per cycle. With the scan tool, read the active DTC's. Does the scan tool display this DTC as active? Yes With the scan tool enter program network configuration and program the FCM to the vehicle configuration, erase DTC's and retest. 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. Erase the stored DTCs.
  1. 1) CHECK FOR ACTIVE DTC AND DETERMINE FCM CONFIGURATION With the scan tool, read the active DTC's. Cycle the ignition switch from off to on at least 5 times, leaving the ignition on for a minimum of 90 seconds per cycle. With the scan tool, read the active DTC's. Does the scan tool display this DTC as active? Yes With the scan tool enter program network configuration and program the FCM to the vehicle configuration, erase DTC's and retest. 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. Erase the stored DTCs.
  1. 1) CHECK FOR ACTIVE DTC AND DETERMINE FCM CONFIGURATION With the scan tool, read the active DTC's. Cycle the ignition switch from off to on at least 5 times, leaving the ignition on for a minimum of 90 seconds per cycle. With the scan tool, read the active DTC's. Does the scan tool display this DTC as active? Yes With the scan tool enter program network configuration and program the FCM to the vehicle configuration, erase DTC's and retest. 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. Erase the stored DTCs.
  1. 1) CHECK FOR ACTIVE DTC AND DETERMINE FCM CONFIGURATION With the scan tool, read the active DTC's. Cycle the ignition switch from off to on at least 5 times, leaving the ignition on for a minimum of 90 seconds per cycle. With the scan tool, read the active DTC's. Does the scan tool display this DTC as active? Yes With the scan tool enter program network configuration and program the FCM to the vehicle configuration, erase DTC's and retest. 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. Erase the stored DTCs.
  1. 1) CHECK FOR ACTIVE DTC AND DETERMINE FCM CONFIGURATION With the scan tool, read the active DTC's. Cycle the ignition switch from off to on at least 5 times, leaving the ignition on for a minimum of 90 seconds per cycle. With the scan tool, read the active DTC's. Does the scan tool display this DTC as active? Yes With the scan tool enter program network configuration and program the FCM to the vehicle configuration, erase DTC's and retest. 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. Erase the stored DTCs.
  1. 1) CHECK FOR ACTIVE DTC AND DETERMINE FCM CONFIGURATION With the scan tool, read the active DTC's. Cycle the ignition switch from off to on at least 5 times, leaving the ignition on for a minimum of 90 seconds per cycle. With the scan tool, read the active DTC's. Does the scan tool display this DTC as active? Yes With the scan tool enter program network configuration and program the FCM to the vehicle configuration, erase DTC's and retest. 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. Erase the stored DTCs.

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