Pinpoint Test L: DTC U0114

Anti-Lock Control

Pinpoint Test L: DTC U0114


Normal Operation

- DTC U0114 (Lost Communication with Transfer Case Control Module (TCCM))- this DTC sets in continuous memory if the Four-Wheel Drive (4WD) message that should be received from the Transfer Case Control Module (TCCM) is missing for 5 seconds or longer.

This pinpoint test is intended to diagnose the following:

- TCCM (Transfer Case Control Module)

- ABS module

PINPOINT TEST L : DTC U0114

L1 VERIFY THE CUSTOMER CONCERN

- Ignition ON.

- Verify there is an observable symptom present.

Is an observable symptom present?

Yes
GO to L2.
No
The system is operating normally at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

L2 CHECK THE COMMUNICATION NETWORK

- Using a scan tool, carry out a Network Test.

Does the TCCM (Transfer Case Control Module) pass the network test?

Yes
GO to L3.
No
REFER to Information Bus.

L3 RETRIEVE THE RECORDED DTCs FROM THE ABS MODULE AND TCCM (Transfer Case Control Module) SELF-TESTS

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

- Enter the following diagnostic mode on the scan tool: Self Test- TCCM (Transfer Case Control Module).

Is DTC B1676 (or P0562:00) or DTC P0563:00 recorded?

Yes
For ABS module DTC B1676, GO to Pinpoint Test A. Pinpoint Test A: DTC B1676

For TCCM (Transfer Case Control Module) DTCs, REFER to Transfer Case.
No
GO to L4.

L4 RECHECK THE ABS MODULE DTCs

- Clear the DTCs.

- Ignition OFF.

- Wait 10 seconds.

- Ignition ON.

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

Is DTC U0114 still present?

Yes
GO to L5.
No
The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

L5 CHECK FOR DTC U0114 SET IN OTHER MODULES

- Clear the DTCs.

- Ignition OFF.

- Ignition ON.

- Wait 10 seconds.

- Enter the following diagnostic mode on the scan tool: Self Test- All CMDTCs (Continuous Memory Diagnostic Trouble Codes).

Is DTC U0114 set in more than 1 module?

Yes
INSTALL a new TCCM (Transfer Case Control Module). CLEAR the DTCs. REPEAT the ABS module self-test.
No
INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . TEST the system for normal operation.