Back-Up Light Circuit

PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM: Back-up Light Circuit

Back-up Light Circuit

DESCRIPTION

This circuit sends a signal of the back-up light switch or park/neutral position switch to the clearance warning ECU.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT BACK-UP LIGHT SWITCH OR PARK/NEUTRAL POSITION SWITCH
(a) For manual transmission.





(1) Remove the back-up light switch.
(2) Measure the resistance of the switch.
Standard resistance:






(3) Reinstall the back-up light switch.
(b) For automatic transmission.





(1) Disconnect the B35 park / neutral position switch connector.
(2) Measure the resistance.
Standard resistance:






(3) Reconnect the park / neutral position switch connector.
NG -- REPLACE BACK-UP LIGHT SWITCH OR PARK/NEUTRAL POSITION SWITCH
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (SWITCH - CLEARANCE WARNING ECU AND BATTERY)




(a) Disconnect the B35 or B42 switch connector.
(b) Disconnect the E31clearance warning ECU connector.
(c) Measure the voltage of the wire harness side connector.
Standard voltage:

For manual transmission:





For automatic transmission:





(d) Measure the resistance of the wire harness side connectors.
Standard resistance:

For manual transmission:





For automatic transmission:





(e) Reconnect the switch connector.
(f) Reconnect the ECU connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE