Work Flow
OVERALL SEQUENCE

DETAILED FLOW
1.OBTAIN INFORMATION ABOUT SYMPTOM
Interview the customer to obtain as much information as possible about the conditions and environment under which the malfunction occurred.
>> GO TO 2.
2.CHECK SYMPTOM
>> GO TO 3.
3.CHECK CONSULT SELF-DIAGNOSIS RESULTS
Connect CONSULT and perform self-diagnosis. Refer to MWI "CONSULT Function" (Type A) or MWI "CONSULT Function" (Type B).
Are self-diagnosis results normal?
YES >> GO TO 4.
NO >> GO TO 5.
4.NARROW DOWN MALFUNCTIONING PARTS BY SYMPTOM DIAGNOSIS
Perform symptom diagnosis and narrow down the malfunctioning parts.
>> GO TO 5.
5.REPAIR OR REPLACE MALFUNCTIONING PARTS
Repair or replace malfunctioning parts.
NOTE: If DTC is displayed, erase DTC after repairing or replacing malfunctioning parts.
>> GO TO 6.
6.FINAL CHECK
Check that the warning buzzer in the combination meter operates normally.
Does it operate normally?
YES >> Inspection End.
NO >> GO TO 1.
DTC/CIRCUIT DIAGNOSIS
Mixture ratio selflearning value
clear
Description
This describes how to erase the mixture ratio selflearning value. For the
actual procedure, follow the instructions
in "Diagnosis Procedure".
Work Procedure
1.START
With CONSULT
Start engine and warm it up to normal operating temperature.
Select "SELFLEARNING CONT" in "WOR ...
P0507 ISC system
Description
The ECM controls the engine idle speed to a specified level through the fine
adjustment of the air, which is let
into the intake manifold, by operating the electric throttle control actuator.
The operating of the throttle valve is
varied to allow for optimum control of the engine ...