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

Toyota CH-R Service Manual / Brake Control / Dynamic Control Systems / Vehicle Stability Control System / 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

    Open in Stop Light Switch Circuit (C1249)
    DESCRIPTION The skid control ECU (brake actuator assembly) receives stop light switch signals and uses them to determine whether or not the brakes are applied. DTCs may be stored if either of the ...

    Skid Control ECU Malfunction (C1300)
    DESCRIPTION The skid control ECU (brake actuator assembly) stores this DTC if malfunctions are found in a circuit inside the ECU by self diagnosis. DTC No. Detection Item ...

    Other materials:

    Toyota CH-R Service Manual > Vacuum Pump: Reassembly
    REASSEMBLY PROCEDURE 1. INSTALL VACUUM PUMP VANE (a) Apply engine oil to the vacuum pump vane and 2 vacuum pump vane caps. (b) Install the vacuum pump vane caps to the vacuum pump vane. NOTICE: When reusing the vacuum pump vane and vacuum pump vane caps, install them in the ...

    Toyota CH-R Service Manual > Power Window Control System: Rear Power Window RH Auto Up / Down Function does not Operate with Rear Power Window Switch RH
    DESCRIPTION If the manual up and down functions operate normally but the auto up and down functions do not, the power window control system may be in fail-safe mode. If power window initialization has not been performed, the auto up and down functions will not operate. Click here WIRING ...

    Toyota C-HR (AX20) 2023-2025 Owner's Manual

    Toyota CH-R Owners Manual

    Toyota CH-R Service Manual

    © 2017-2025 Copyright www.tochr.net
    0.0084