Power Distribution
B2102-IGNITION RUN/START INPUT CIRCUIT HIGHB2102 - Ignition Run/start Input Circuit High:
WHEN MONITORED
While the CAN bus ignition is Run or signal not available Signal Not Available (SNA) and the IOD status is "IN". The Occupant Classification Module (OCM ) checks the Fused B(+) circuit voltage input range.
SET CONDITION
If the module detects that the ignition voltage is greater than 24.25 volts ±0.25 volts for 10 seconds.
POSSIBLE CAUSES
- Vehicle charging system
- Occupant restraint controller
Diagnostic Test
1. VERIFY THAT DTC B2102-IGNITION RUN/START INPUT CIRCUIT HIGH IS ACTIVE
NOTE: Ensure the battery is fully charged.
Turn the ignition on.
With the scan tool, read Occupant Classification Module (OCM) DTCs.
Q: Does the scan tool display active: B2102-IGNITION RUN/START INPUT CIRCUIT HIGH?
YES: Go To 2
NO: Go To 3
2. CHECK FOR CHARGING SYSTEM RELATED DTCs IN THE POWERTRAIN CONTROL MODULE (PCM)
With the scan tool in ECU View, select PCM and check for any Charging System related DTCs.
Q: Does the scan tool display any Charging System related DTCs?
YES: Diagnose and repair the DTCs.
NO: Replace the OCM. Perform the AIRBAG SYSTEM VERIFICATION TEST - VER 1. Airbag System Verification Test
3. TEST FOR INTERMITTENT CONDITION
With the scan tool, record and erase all DTCs from all Airbag modules.
If any ACTIVE codes are present they must be resolved before diagnosing any stored codes.
Q: Does the scan tool display any ACTIVE DTCs?
YES: Select appropriate symptom from Symptom List.
NO: No problem found. Erase all codes before returning vehicle to customer.