Seat Heater Switch Indicator Circuit

AIR CONDITIONING: AIR CONDITIONING SYSTEM: Seat Heater Switch Indicator Circuit

Seat Heater Switch Indicator Circuit

DESCRIPTION

Battery voltage is supplied to the seat heater switch through the S-HTR fuse. When the seat heater switch is turned on, the seat heater switch indicator comes on.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT FUSE (ECU IG NO. 1)





(a) Remove the ECU IG NO. 1 fuse from the instrument panel J/B.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






NG -- REPLACE FUSE (ECU IG NO. 1)
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (SEAT HEATER SWITCH - BATTERY)





(a) Disconnect the connector from seat heater switch.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. INSPECT SEAT HEATER SWITCH





(a) Reconnect the connector to the seat heater switch.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:






NG -- REPLACE SEAT HEATER SWITCH
OK -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - SEAT HEATER SWITCH)





(a) Disconnect the connector from A/C amplifier.





(b) Disconnect the connector from the seat heater switch.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE AIR CONDITIONING AMPLIFIER