Pinpoint Test F: DTC U3003:16
NOTE:
Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
NOTE:
Failure to disconnect the battery when instructed results in false resistance readings. Refer to
BATTERY, MOUNTING AND CABLES
.
- F1 RECHECK THE BCM DTCs
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: BCM Self-Test.
- Clear the DTCs. Repeat the BCM self-test.
- Is DTC U3003:16 still present?
- Yes : GO to F2.
- No : The system is operating correctly at this time. The DTC may have been set due to a previous low battery voltage condition.
- F2 CHECK FOR CHARGING SYSTEM DTCs IN THE PCM
- Enter the following diagnostic mode on the scan tool: PCM Self-Test.
- Carry out the PCM KOEO self-test.
- Retrieve the continuous memory DTCs from the PCM.
- Is DTC P0562, P0620, P0622, P0625, P0626 or P065B set in the PCM?
- Yes : REFER to CHARGING SYSTEM .
- No : GO to F3.
- F3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE
- Ignition OFF.
- Check the battery condition and verify the battery is fully charged. Refer to BATTERY, MOUNTING AND CABLES .
- Is the battery OK and fully charged?
- Yes : GO to F4.
- No : REFER to CHARGING SYSTEM .
- F4 CHECK THE BCM VOLTAGE PID
- Ignition ON.
- Measure and record the voltage at the battery.
- Enter the following diagnostic mode on the scan tool: BCM DataLogger.
- Monitor the BCM voltage PID.
- Is the voltage within 0.2 volt of the recorded battery voltage?
- F5 CHECK THE BCM VOLTAGE SUPPLY
- Ignition OFF.
- Disconnect: BCM C2280A.
- Ignition ON.
- Measure the voltage between the BCM C2280A-8, circuit SBB06 (BN/RD), harness side and ground; and between the BCM C2280A-14, circuit SBB24 (VT/RD), harness side and ground.
- Is the voltage within 0.2 volt of the recorded battery voltage?
- Yes : GO to F6.
- No : REPAIR circuit SBB06 (BN/RD) or circuit SBB24 (VT/RD) as necessary for high resistance. CLEAR the DTC. REPEAT the self-test.
- F6 CHECK THE BCM GROUND CIRCUIT FOR HIGH RESISTANCE
- Ignition OFF.
- Disconnect: Negative Battery Cable.
- Disconnect: BCM C2280D.
- Measure the resistance between the BCM C2280A-16, circuit GD115 (BK/GY), harness side and ground; and between the BCM C2280B-7, circuit GD115 (BK/GY), harness side and ground.
- Is the resistance less than 5 ohms?
- Yes : GO to F7.
- No : REPAIR circuit GD115 (BK/GY) for high resistance. CLEAR the DTC. REPEAT the self-test.
- F7 CHECK FOR CORRECT BCM OPERATION
- Disconnect the BCM connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect the BCM connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
- Yes : INSTALL a new BCM. REFER to Body Control Module (BCM) . TEST the system for normal operation.
- No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.