Back-Up Light Circuit

LIGHTING: LIGHTING SYSTEM: Back-up Light Circuit
- Back-up Light Circuit

DESCRIPTION

Automatic Transmission models: The park / neutral position switch turns on when the shift lever is moved into the R position, causing the back-up lights to illuminate.

Manual Transmission models: The back-up light switch turns on when the shift lever is moved into the R position, causing the back-up lights to illuminate.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT FUSE (IG1)

(a) Remove the IG1 fuse from the main body ECU.

(b) Measure the resistance according value(s) in the table below.

Standard resistance:





(c) Reinstall the IG1 fuse.

NG -- REPLACE FUSE
OK -- Continue to next step.

2. INSPECT BULB (BACK-UP LIGHT BULB)

(a) Remove the back-up light bulb.





(b) Apply battery voltage to the terminals and check that the back-up light illuminates.

OK:





(c) Reinstall the back-up light bulb.

NG -- REPLACE BULB Disassembly
OK -- Continue to next step.

3. CHECK TRANSAXLE TYPE

(a) Check the vehicle's transaxle type.

Result:





B -- INSPECT BACK-UP LIGHT SWITCH
A -- Continue to next step.

4. INSPECT PARK / NEUTRAL POSITION SWITCH

(a) Disconnect the B35 park / neutral position switch.





(b) Measure the resistance according value(s) in the table below.

Standard resistance:





(c) Reconnect the park / neutral position switch.

Result:





C -- REPLACE PARK/NEUTRAL POSITION SWITCH Removal

B -- REPLACE PARK / NEUTRAL POSITION SWITCH
A -- Continue to next step.

5. CHECK HARNESS AND CONNECTOR (FUSE - PARK / NEUTRAL POSITION SWITCH)

(a) Disconnect the B35 park / neutral position switch connector.





(b) Measure the voltage according value(s) in the table below.

Standard voltage:





(c) Reconnect the park / neutral position switch connector.

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

6. CHECK HARNESS AND CONNECTOR (PARK / NEUTRAL POSITION SWITCH - REAR BACK-UP LIGHT)

(a) Disconnect the B35 park / neutral position switch connector.





(b) Disconnect the L13 and L16 back-up light connectors.

(c) Measure the resistance according value(s) in the table below.

Standard resistance:





(d) Reconnect the park / neutral position switch connector.

(e) Reconnect the back-up light connectors.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR (BACK-UP LIGHT - BODY GROUND)

7. INSPECT BACK-UP LIGHT SWITCH

(a) Disconnect the B42 back-up light switch connector.





(b) Measure the resistance according value(s) in the table below.

Standard resistance:





(c) Reconnect the back-up light switch connector.

NG -- REPLACE BACK-UP LIGHT SWITCH Disassembly
OK -- Continue to next step.

8. CHECK HARNESS AND CONNECTOR (FUSE - BACK-UP LIGHT SWITCH)

(a) Disconnect the B42 back-up light switch connector.





(b) Measure the voltage according value(s) in the table below.

Standard voltage:





(c) Reconnect the back-up light switch connector.

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

9. CHECK HARNESS AND CONNECTOR (BACK-UP LIGHT SWITCH - BACK-UP LIGHT)

(a) Disconnect the B42 back-up light switch connector.





(b) Disconnect the L13 and L16 back-up light connectors.

(c) Measure the resistance according value(s) in the table below.

Standard resistance:





(d) Reconnect the back-up light switch connector.

(e) Reconnect the back-up light connectors.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR (BACK-UP LIGHT - BODY GROUND)