Pinpoint Test A: DTC P1397:00
Body Control Module (BCM)
Pinpoint Test A: DTC P1397:00
Normal Operation
- DTC P1397:00 (System Voltage Out Of Self Test Range: No Sub Type Information)- an on-demand DTC that sets when the Body Control Module (BCM) detects voltage below 10 volts or above 15.5 volts from either voltage supply circuit to BCM (Body Control Module) C2280A-8 or BCM (Body Control Module) C2280A-14.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- High circuit resistance
- Charging system concern
- BCM (Body Control Module)
PINPOINT TEST A : DTC P1397:00
NOTICE: 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.
NOTE: DTC P1397:00 may be stored in the module memory due to previous battery charging or vehicle jump starting events.
A1 CHECK FOR DTCs U3003:16 AND U3003:17
- Check for recorded BCM (Body Control Module) DTCs from the self-test.
Is DTC U3003:16 or DTC U3003:17 present?
Yes
For DTC U3003:16, GO to Pinpoint Test F Pinpoint Test F: DTC U3003:16.
For DTC U3003:17, GO to Pinpoint Test G Pinpoint Test G: DTC U3003:17.
No
GO to A2.
A2 RECHECK THE BCM (Body Control Module) DTCs
- Ignition OFF.
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: BCM (Body Control Module) Module Self-Test.
- Clear the DTCs. Repeat the BCM (Body Control Module) self-test.
Is DTC P1397:00 still present?
Yes
GO to A3.
No
The system is operating correctly at this time. The DTC may have been set due to a previous low battery voltage condition, during battery charging or while jump starting the vehicle.
A3 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 (Key ON Engine OFF) 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 A4.
A4 CHECK FOR DTCs B1317, B1318, B1676, P0563 OR U3003:17 SET IN OTHER MODULES
- Enter the following diagnostic mode on the scan tool: Self-Test.
- Retrieve the continuous memory DTCs from all modules.
Is DTC B1317, B1318, B1676, P0563 (PCM) or U3003:17 set in any other module?
Yes
REFER to Charging System to diagnose the charging system condition.
No
GO to A5.
A5 CHECK THE BATTERY VOLTAGE
- Turn off all interior/exterior lights and accessories.
- Start and run the engine at approximately 2,000 rpm for 3 minutes while monitoring the battery voltage.
Does the battery voltage rise to 15.5 volts or higher?
Yes
REFER to Charging System to diagnose an overcharging condition.
No
GO to A6.
A6 CHECK THE BATTERY CONDITION AND STATE OF CHARGE
- Ignition OFF.
- Check the battery condition and verify the battery is fully charged.
Is the battery OK and fully charged?
Yes
GO to A7.
No
REFER to Charging System.
A7 CHECK THE BCM (Body Control Module) VOLTAGE PID
- Ignition ON.
- Measure and record the voltage at the battery.
- Enter the following diagnostic mode on the scan tool: BCM (Body Control Module) DataLogger.
- Monitor the BCM (Body Control Module) voltage PID.
Is the voltage within 0.2 volt of the recorded battery voltage?
Yes
GO to A10.
No
GO to A8.
A8 CHECK THE BCM (Body Control Module) VOLTAGE SUPPLY
- Ignition OFF.
- Disconnect: BCM (Body Control Module) C2280A.
- Ignition ON.
- Measure the voltage between the BCM (Body Control Module) C2280A-8, circuit SBB06 (BN/RD), harness side and ground; and between the BCM (Body Control Module) 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 A9.
No
REPAIR circuit SBB06 (BN/RD) or circuit SBB24 (VT/RD) as necessary for high resistance. CLEAR the DTC. REPEAT the self-test.
A9 CHECK THE BCM (Body Control Module) GROUND CIRCUIT FOR HIGH RESISTANCE
- Ignition OFF.
- Disconnect: Negative Battery Cable.
- Disconnect: BCM (Body Control Module) C2280B.
- Measure the resistance between the BCM (Body Control Module) C2280A-16, circuit GD115 (BK/GY), harness side and ground; and between the BCM (Body Control Module) C2280B-7, circuit GD115 (BK/GY), harness side and ground.
Is the resistance less than 5 ohms?
Yes
GO to A10.
No
REPAIR circuit GD115 (BK/GY) for high resistance. CLEAR the DTC. REPEAT the self-test.
A10 CHECK FOR CORRECT BCM (Body Control Module) OPERATION
- Disconnect the BCM (Body Control Module) connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect the BCM (Body Control Module) 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 (Body Control Module). REFER to Body Control Module (BCM) 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.