Pinpoint Test L: DTC B1317

Power Liftgate

Pinpoint Test L: DTC B1317

Refer to Wiring Diagram Set 109, Power Liftgate for schematic and connector information Electrical Diagrams.

Normal Operation

- DTC B1317 (Battery Voltage High)- a continuous and on-demand DTC that sets when the Liftgate/Trunk Module (LTM) detects battery voltage above 16 volts on the voltage supply circuit for 3 seconds or longer.

This pinpoint test is intended to diagnose the following:

- Charging system concern

- LTM (Liftgate/Trunk Module)

PINPOINT TEST L : DTC B1317

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

NOTE: DTC B1317 may be stored in the module memory due to past battery charging or vehicle jump starting events.

L1 CHECK FOR CHARGING SYSTEM DTCs SET IN OTHER MODULES

- Ignition ON.

- Enter the following diagnostic mode on the scan tool: Self-Test.

- Retrieve the continuous memory DTCs from all modules.

Is DTC B1317, B1676, P0563 (PCM) or U3003:17 set in more than one module?

Yes
REFER to Charging System to diagnose an overcharging condition.

No
GO to L2.

L2 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 L3.

L3 RECHECK FOR DTC B1317

- Turn the engine off.

- Ignition ON.

- Clear the continuous memory DTCs.

- Enter the following diagnostic mode on the scan tool: Liftgate/Trunk Module (LTM) Self-Test.

Is DTC B1317 present?

Yes
GO to L4.

No
The system is operating normally at this time. The DTC may have been set previously during battery charging or while jump starting the vehicle.

L4 CHECK FOR CORRECT LTM (Liftgate/Trunk Module) OPERATION

- Disconnect all the LTM (Liftgate/Trunk Module) connectors.

- Check for:
- corrosion

- damaged pins

- pushed-out pins


- Connect all the LTM (Liftgate/Trunk Module) connectors and make sure they are seated correctly.

- Make sure the liftgate is fully closed.

- Operate the system and verify the concern is still present.

Is the concern still present?

Yes
INSTALL a new LTM (Liftgate/Trunk Module). REFER to Liftgate/Trunk Module (LTM) . TEST the system for normal operation.

No
The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector.