P1633

DTC P1633 ECM MALFUNCTION (ETCS CIRCUIT)

DTC Detecting Condition:

CIRCUIT DESCRIPTION

INSPECTION PROCEDURE

HINT: Read freeze frame data using hand-held tester. Because freeze frame records the engine conditions when the malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, the air-fuel ratio was lean or rich, etc. at the time of the malfunction.

REPAIR OR REPLACE ECM