Diagnostic Routine D

Diagnostic Routine D

Diagnostic Overview

DTC U0140:87

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions







Pinpoint Test

1. VERIFY THE SCAN TOOL COMMUNICATES WITH THE PCM (Powertrain Control Module)

1. Connect the scan tool.

2. Check that a vehicle session can be established using the scan tool.

Can a vehicle session be established?








2. CHECK THE BCM (Body Control Module) CONTINUOUS MEMORY DTCs (Diagnostic Trouble Codes)

1. Ignition ON.

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

3. Clear the DTCs (Diagnostic Trouble Codes). Repeat the BCM (Body Control Module) self-test.

Is DTC (Diagnostic Trouble Code) U0140:87 retrieved again?








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

1. Check for recorded BCM (Body Control Module) DTCs (Diagnostic Trouble Codes) from the self-test.

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








4. CHECK FOR DTC (Diagnostic Trouble Code) U0140:87 SET IN OTHER MODULES

1. Ignition ON.

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

Is DTC (Diagnostic Trouble Code) U0140:87 set in any other module?