B -- REPLACE DRIVING SUPPORT ECU See: Cruise Control/Cruise Control Module/Service and Repair/Removal
A -- END
Up to 08/2009
POWER ASSIST SYSTEMS: POWER STEERING SYSTEM: U0100,U0129,U1104: Lost Communication with ECM / PCM "A"
U1104 - Lost Communication with Driving Support ECU
DESCRIPTION
The power steering ECU receives signals from the ECM and the brake actuator assembly (skid control ECU) via the CAN communication system.
INSPECTION PROCEDURE
PROCEDURE
1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM)
(a) Clear the DTCs See: Steering and Suspension/Steering/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes.
(b) Check for DTCs See: Steering and Suspension/Steering/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes.
OK:
DTC is not output.
NG -- GO TO CAN COMMUNICATION SYSTEM See: Powertrain Management/Computers and Control Systems/Information
Bus/Testing and Inspection/Initial Inspection and Diagnostic Overview/CAN Communication System/How to Proceed With
Troubleshooting
OK -- CHECK INTERMITTENT PROBLEMS See: Accessories and Optional Equipment/Antitheft and Alarm
Systems/Diagrams/Diagnostic Aids/How To Troubleshoot ECU Controlled Systems/How To Proceed With Troubleshooting
From 08/2009
POWER ASSIST SYSTEMS: POWER STEERING SYSTEM: U0100,U0129,U1104: Lost Communication with ECM / PCM "A"
U1104 - Lost Communication with Driving Support ECU
DESCRIPTION
The power steering ECU receives signals from the ECM and the brake actuator assembly (skid control ECU) via the CAN communication system.
INSPECTION PROCEDURE
PROCEDURE
1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM)
(a) Clear the DTCs See: Steering and Suspension/Steering/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes.
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