Toyota RAV4 manuals

Toyota Sienna Service Manual: Engine Control System Malfunction

DTC C1201/51 Engine Control System Malfunction

DESCRIPTION

If trouble occurs the engine control system, the ECM transmits the abnormality to the skid control ECU.

The skid control ECU set this DTC and the skid control ECU prohibits TRAC and VSC control.

INSPECTION PROCEDURE

1 CHECK ENGINE CONTROL SYSTEM

(a) Check if the normal system code is recorded for engine control system.

Result

REPLACE ECM

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ECM Communication Circuit Malfunction
DTC C1203/53 ECM Communication Circuit Malfunction DESCRIPTION The circuit is used to send TRAC and VSC control information from the skid control ECU to the ECM, and engine control information fr ...

Other materials:

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Fuel Pump Primary Circuit
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Reassembly
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