Diagnostic Routine P

Diagnostic Routine P

Diagnostic Overview

U0140

Normal Operations and Fault Conditions

DTC Fault Trigger Conditions






Pinpoint Test

1. VERIFY THE CUSTOMER CONCERN

1. Ignition ON.

2. Verify there is an observable symptom present.

Is an observable symptom present?








2. CHECK THE COMMUNICATION NETWORK

1. Ignition ON.

2. Using a scan tool, perform the network test.

Does the BCM (Body Control Module) pass the network test?








3. RETRIEVE THE RECORDED DTCs (Diagnostic Trouble Codes) FROM THE BCM (Body Control Module) SELF-TEST

1. Using a scan tool, perform the BCM (Body Control Module) self-test.

Is DTC (Diagnostic Trouble Code) U3003:16 or DTC (Diagnostic Trouble Code) U3003:17 recorded?








4. RETRIEVE THE RECORDED DTCs (Diagnostic Trouble Codes) FROM THE LTM (Liftgate/Trunk Module) SELF-TEST

1. Using a scan tool, perform the LTM (Liftgate/Trunk Module) self-test.

Is DTC (Diagnostic Trouble Code) B1317 or DTC (Diagnostic Trouble Code) B1318 recorded?








5. RECHECK THE LTM (Liftgate/Trunk Module) DTCs (Diagnostic Trouble Codes)

1. Using a scan tool, clear the DTCs (Diagnostic Trouble Codes).

2. Wait 10 seconds.

3. Using a scan tool, perform the LTM (Liftgate/Trunk Module) self-test.

Is DTC (Diagnostic Trouble Code) U0140 still present?








6. CHECK FOR DTC (Diagnostic Trouble Code) U0140 SET IN OTHER MODULES

1. Using a scan tool, clear all DTCs (Diagnostic Trouble Codes).

2. Ignition OFF.

3. Ignition ON.

4. Wait 10 seconds.

5. Using a scan tool, retrieve the continuous memory DTCs (Diagnostic Trouble Codes) from all modules.

Is DTC (Diagnostic Trouble Code) U0140 set in the DSM (Driver Seat Module) or IPC (Instrument Panel Cluster)?