Pinpoint Test
- RECHECK THE C-CM DTCs
- Ignition ON.
- Using a scan tool, perform the C-CM self-test.
- Clear the DTCs .
- Wait 10 seconds.
- Repeat the C-CM self-test.
Is DTC U3003:16 still present?
- Yes: GO to 2 .
- No: The system is operating correctly at this time. The DTC may have been set due to a previous low battery voltage condition.
- CHECK FOR CHARGING SYSTEM DTCs
IN THE PCM
- Using a scan tool, perform PCM Self-Test.
- Retrieve the continuous memory DTCs from the PCM.
Are any charging system DTCs present in the PCM?
- Yes: REFER to DTC CHART: POWERTRAIN CONTROL MODULE (PCM) .
- No: GO to 3 .
- CHECK THE BATTERY CONDITION AND STATE OF CHARGE
- Check the battery condition and verify the battery is fully charged. REFER to DIAGNOSTIC ROUTINE A : Battery Condition Test.
Is the battery OK and fully charged?
- Yes: GO to 4 .
- No: REFER to BATTERY CHARGING .
- CHECK THE C-CM
VOLTAGE SUPPLY
- Ignition OFF.
- Measure and record the voltage at the battery.
- Disconnect C-CM .
- Ignition ON.
- Measure:
C-CM Ground C1582 Ground Pin Circuit Measurement / Action Pin Circuit 1 SBB79 (WH/RD) - Ground
Is the voltage within 0.2 volt of the recorded battery voltage?
- Yes: GO to 5 .
- No: REPAIR the circuit for high resistance.
- CHECK THE C-CM
GROUND CIRCUIT
- Ignition OFF.
- Measure:
C-CM Ground C1582 Ground Pin Circuit Measurement / Action Pin Circuit 4 GD120 (BK/GN) - Ground
Is the resistance less than 3 ohms?
- Yes: GO to 6 .
- No: REPAIR the circuit for high resistance.
- CHECK FOR CORRECT C-CM
OPERATION
- Disconnect and inspect the C-CM connector.
- Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged pins - install new terminals/pins
- pushed-out pins - install new pins as necessary
- Reconnect the C-CM connector. Make sure it seats and latches correctly.
- Operate the system and determine if the concern is still present.
Is the concern still present?
- Yes: CHECK OASIS for any applicable TSBs . If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs address this concern, INSTALL a new C-CM . REFER to Cruise Control Module (C-CM)
- No: The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.