Without CONSULT

DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE
Procedure for malfunction A
1) Turn ignition switch "ON", and wait at least 6 seconds.
2) Start engine and wait at least 3 seconds.
3) Turn ignition switch "OFF", wait at least 5 seconds and then turn "ON".
4) Perform diagnostic test mode II (Self-diagnostic results) with Engine Control Module (ECM).

Procedure for malfunction B
1) Turn ignition switch "ON".
2) Start engine and warm it up sufficiently.
3) Run engine for at least 10 seconds at idle speed.
4) Turn ignition switch "OFF", wait at least 5 seconds and then turn "ON".
5) Perform diagnostic test mode II (Self-diagnostic results) with ECM.

OVERALL FUNCTION CHECK
Use this procedure to check the overall function of the mass air flow sensor circuit. During this check, a DTC might not be confirmed.

Procedure for malfunction C
1) Turn ignition switch "ON".
2) Start engine and warm it up sufficiently.




3) Check the voltage between ECM terminal (47) and ground.
4) Check for linear voltage rise in response to increases to about 4,000 rpm in engine speed.