OK -- Continue to next step.
2. CLEAR AND STORE SYSTEM INFORMATION
(a) Clear the system information See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Testing and
Inspection/Programming and Relearning.
(b) Store the system information See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Testing and
Inspection/Programming and Relearning.
NEXT -- Continue to next step.
3. RECONFIRM DTC
(a) Clear the DTCs See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Testing and Inspection/Reading and
Clearing Diagnostic Trouble Codes.
(b) Check if the same DTC is recorded See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Testing and
Inspection/Reading and Clearing Diagnostic Trouble Codes.
Result:
B -- REPLACE BRAKE ACTUATOR ASSEMBLY See: Brakes and Traction Control/Antilock Brakes / Traction Control
Systems/Hydraulic Control Assembly - Antilock Brakes/Service and Repair/Removal
A -- CHECK FOR 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
BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: C1203,C1270: ECM
Communication Circuit Malfunction
DESCRIPTION
The circuit is used to send TR(A)C and VSC control information from the skid control ECU to the ECM, and engine control information from the
ECM to the skid control ECU.
If the skid control ECU is replaced or if the memory is cleared, system information such as the destination or vehicle type will be unconfirmed. After
switching to Test Mode, the skid control ECU performs initialization when starting communication with the vehicle, and stores the system
information in 2 or 3 seconds.
DTC C1270 will be cleared when the initialization is completed normally or when Test Mode ends. DTC C1270 is output only in Test Mode.
INSPECTION PROCEDURE
NOTICE:
When replacing the brake actuator assembly, perform zero point calibration and store system information See: Brakes and
Traction Control/Antilock Brakes / Traction Control Systems/Testing and Inspection/Programming and Relearning.
PROCEDURE
1. CHECK PART NUMBER (ECM)
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