Diagnosis Procedure
Regarding Wiring Diagram information. Refer to CHG-7, "Wiring Diagram".
CAUTION: When performing this inspection, always use a charged battery that has completed the battery inspection.
(When the charging rate of the battery is low, the response speed of the voltage change will become slow. This can cause an incorrect inspection.)
1.CHECK ECM (CONSULT)
Perform ECM self-diagnosis with CONSULT. Refer to EC-67, "CONSULT Function".
Self-diagnostic results content No malfunction detected>> GO TO 2.
Malfunction detected>> Check applicable parts, and repair or replace corresponding parts.
2.CHECK HARNESS BETWEEN GENERATOR AND ECM


Is the inspection result normal? YES >> Replace ECM. Refer to EC-499, "Removal and Installation".
NO >> Repair harness or connectors between ECM and generator.
Charging system preliminary inspection
B terminal circuitRadio
With the ignition placed in the ACC or ON position,
press the or POWER
button/VOLUME control knob to turn the radio
on. If you listen to the radio with the engine not
running, the ignition should be placed in the ACC
position.
Radio reception is affected by station signal
strength, distance ...
C1199 brake booster
DTC Logic
DTC DETECTION LOGIC
DTC
Display Item
Malfunction detected condition
Possible causes
C1199
BRAKE BOOSTER
When brake booster vacuum is approx. 0 kPa (0 mm-
Hg) during engine running.
Harness or connector
Vacuum sensor (brake booster)
...
Additional service when replacing ECM
Description
When replacing ECM, the following procedure must be performed. (For details,
refer to EC-136, "Work Procedure".)
PROGRAMMING OPERATION
NOTE:
After replacing with a blank ECM, programming is required to write ECM
information. Be sure to follow the procedure
to perform t ...