Description
It detects outside air temperature and converts it into a resistance value which is then input into the combination meter.
Diagnosis Procedure
Regarding Wiring Diagram information, refer to MWI-32, "Wiring Diagram".
1.CHECK AMBIENT SENSOR SIGNAL CIRCUIT


Is the inspection result normal? YES >> GO TO 2.
NO >> Repair or replace harness or connector.
2.CHECK AMBIENT SENSOR SIGNAL GROUND CIRCUIT
Check continuity between combination meter harness connector and ambient sensor harness connector.

Is the inspection result normal? YES >> Inspection End.
NO >> Repair or replace harness or connector.
Component Inspection
1.CHECK AMBIENT SENSOR

Is the inspection result normal? YES >> Inspection End.
NO >> Replace ambient sensor. Refer to HAC-104, "Removal and Installation".
Parking brake switch signal circuit
Meter control switch signal circuitOverdrive control switch
Component Function Check
1.CHECK O/D OFF INDICATOR LAMP FUNCTION
Check O/D OFF indicator lamp turns ON for approx. 2 seconds when ignition
switch turns ON.
Is the inspection results normal?
YES >> GO TO 2.
NO >> Go to TM-181, "Diagnosis Procedure".
2.CHECK OVERDRIVE ...
Basic inspection
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow
OVERALL SEQUENCE
DETAILED FLOW
1.GET INFORMATION FOR SYMPTOM
Get detailed information from the customer about the symptom (the
condition and the environment when
the incident/malfunction occurs).
Check operation condition of the ...
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Checking
WARNING:
Inspect the ...