Toyota CH-R Service Manual: Error in Matching of ECUs (C1288)

DESCRIPTION

The skid control ECU (brake actuator assembly) stores this DTC when the previously learned values in the VSC system and engine information sent from the ECM are inconsistent, or when the learning has not completed after the skid control ECU (brake actuator assembly) is replaced with a new one.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1288

Error in Matching of ECUs

ECM does not match.

ECM

PROCEDURE

1.

CHECK CAN COMMUNICATION SYSTEM

(a) Check if CAN communication system DTCs are output.

Click here

Result

Proceed to

DTCs are not output.

A

DTCs are output.

B

B

INSPECT CAN COMMUNICATION SYSTEM

A

2.

PERFORM SYSTEM VARIANT LEARNING

(a) Perform system variant learning.

Click here

HINT:

  • System variant learning is automatically performed immediately after Test Mode is entered.
  • If learning has not yet been performed, the slip indicator light will remain on and DTC C1288 will be stored.
  • If system variant learning is not successful, the warning lights will not blink in the Test Mode pattern and DTC C1288 will not be cleared.
NEXT

3.

RECONFIRM DTC

(a) Turn the ignition switch off.

(b) Clear the DTCs.

Click here

Chassis > ABS/VSC/TRAC/EPB > Clear DTCs

(c) Turn the ignition switch off.

(d) Start the engine.

(e) Check if the same DTC is output.

Click here

Chassis > ABS/VSC/TRAC/EPB > Trouble Codes

Result

Proceed to

DTC C1288 is not output.

A

DTC C1288 is output.

B

HINT:

If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing parts.

Click here

A

END

B

REPLACE ECM

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