Component Tests and General Diagnostics

SEAT HEATER SWITCH INSPECTION








1. INSPECT SWITCH CONTINUITY
If continuity is not as specified, replace the switch or bulb.





2. INSPECT SWITCH INDICATOR
a. Connect the positive (+) lead from the battery to terminal 11 and the negative (-) lead to terminal 8.
b. Push the switch and check that the indicator light lights up.
If operation is not as specified. replace the switch.








3. INSPECT SWITCH CIRCUIT
Disconnect the switch connector and inspect the connector on the wire harness side, as shown.
If circuit is not as specified, inspect the circuits connected to other parts.

ENGINE MAIN RELAY INSPECTION








1. INSPECT RELAY CONTINUITY
If continuity is not as specified. replace the relay.








2. INSPECT RELAY CIRCUIT
Remove the relay and inspect the connector on the junction block side, as shown.
If circuit is not as specified. inspect the circuits connected to other parts.

SEAT HEATER INSPECTION








1. INSPECT SEAT CUSHION CONTINUITY
a. Heat the thermostat with a light.
b. Inspect the seat heater continuity between terminals.
If continuity is not as specified. replace the seat cushion pad.








2. INSPECT SEAT BACK CONTINUITY
Inspect the seat heater continuity between terminals, as shown.
If continuity is not as specified. replace the seat back pad.