Self-Diagnostic System

Using Hand-Held Tester (HHT), retrieve and record Diagnostic Trouble Code(s) (DTC) from control module using manufacturer's instructions. See DTC IDENTIFICATION table. Perform appropriate test under SYSTEM TESTS . DTCs can only be erased using HHT. While performing DTC readout, it is possible that DTCs may appear that are not relevant to system being checked, meaning that all stored DTCs in that particular control module are being displayed.

DTC IDENTIFICATION

DTC

Cause

B1000

⁽¹⁾ Ignition Lock Control Module, ⁽²⁾ Sun Roof Control Module Or ⁽³⁾ Signal Pick-Up & Activation Module (SAM)

B1010

⁽⁴⁾ Low Voltage (Ignition Switch)

B1011

⁽⁴⁾ Excessive Voltage (Ignition Switch)

B1021

⁽⁴⁾ CAN Communication Fault With PSE

B1024

⁽⁴⁾ CAN "L" Data Line, Open, Short To Ground/Voltage Or Shorted Together

B1025

⁽⁴⁾ CAN "H" Data Line Open, Short To Ground/Voltage Or Shorted Together

B1054

⁽⁴⁾ CAN "L" Communication Fault With Front Door Control Module

B1055

⁽⁴⁾ CAN "H" Communication Fault With Front Door Control Module

B1057

⁽⁴⁾ CAN Communication Fault Sun Roof Control Module

B1059

⁽⁴⁾ CAN Communication Fault With Signal Pick-Up & Activation Module (SAM)

B1148

⁽⁵⁾ Circuit No. 50 Output Open, Short To Ground/Voltage Or Shorted Together

B1156

⁽⁶⁾ ESC Control Module Open Or Short To Ground/Voltage

B1157

⁽⁶⁾ ESC Control Module Open Or Short To Ground/Voltage

⁽¹⁾	Replace ignition lock control module.

⁽²⁾	Replace sun roof control module.

⁽³⁾	Replace Signal pick-up and Activation Module (SAM).

⁽⁴⁾	Diagnose ignition switch and Control Area Network (CAN) data lines. See MODULE COMMUNICATIONS NETWORK article.

⁽⁵⁾	Diagnose circuit. If circuit is okay, replace ignition switch.

⁽⁶⁾	Perform TEST 14 and TEST 15 under SYSTEM TESTS . Diagnose ESC control module.