DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
INSPECT FUSE (BK/UP LP FUSE)
CHECK VEHICLE TYPE
INSPECT PARK/NEUTRAL POSITION SWITCH
CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - BATTERY)
CHECK VEHICLE TYPE
CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - BACK-UP LIGHT AND BODY GROUND)
CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - REAR LIGHT AND BODY GROUND)
INSPECT BACK-UP LIGHT SWITCH
CHECK HARNESS AND CONNECTOR (BACK-UP LIGHT SWITCH - BATTERY)
CHECK VEHICLE TYPE
CHECK HARNESS AND CONNECTOR (BACK-UP LIGHT SWITCH - BACK-UP LIGHT AND BODY GROUND)
CHECK HARNESS OR CONNECTOR (BACK-UP LIGHT SWITCH - REAR LIGHT AND BODY GROUND)
LIGHTING SYSTEM - Back-up Light Circuit |
DESCRIPTION
The park/neutral position switch turns on when the shift lever is moved to R, causing the back-up lights to illuminate.
WIRING DIAGRAM
INSPECTION PROCEDURE
1.INSPECT FUSE (BK/UP LP FUSE) |
Remove the BK/UP LP fuse from the main body ECU.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
BK/UP LP fuse
| Always
| Below 1 Ω
|
Check the vehicle type.
ResultResult
| Proceed to
|
for Automatic Transmission
| A
|
for Manual Transmission
| B
|
3.INSPECT PARK/NEUTRAL POSITION SWITCH |
Remove the park/neutral position switch.
- for A750F Automatic Transmission: Click here
- for AB60F Automatic Transmission: Click here
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
2 (RB) - 1 (RL)
| Shift lever in R
| Below 1 Ω
|
2 (RB) - 1 (RL)
| Shift lever not in R
| 10 kΩ or higher
|
ResultResult
| Proceed to
|
OK
| A
|
NG (for A750F Automatic Transmission)
| B
|
NG (for AB60F Automatic Transmission)
| C
|
4.CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - BATTERY) |
Disconnect the C24 park/neutral position switch connector.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection
| Switch Condition
| Specified Condition
|
C24-2 (RB) - Body ground
| Ignition switch ON
| 11 to 14 V
|
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
Check the vehicle type.
ResultResult
| Proceed to
|
for Double Swing Out Type
| A
|
except Double Swing Out Type
| B
|
6.CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - BACK-UP LIGHT AND BODY GROUND) |
Disconnect the C24 park/neutral position switch connector.
for LH:
Disconnect the O8 light connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
C24-1 (RL) - O8-2
| Always
| Below 1 Ω
|
O8-1 - Body ground
|
O8-2 - Body ground
| Always
| 10 kΩ or higher
|
for RH:
Disconnect the O7 light connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
C24-1 (RL) - O7-2
| Always
| Below 1 Ω
|
O7-1 - Body ground
|
O7-2 - Body ground
| Always
| 10 kΩ or higher
|
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
OK |
|
|
|
PROCEED TO NEXT INSPECTION PROCEDURE SHOWN IN PROBLEM SYMPTOMS TABLE (Click here) |
|
7.CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - REAR LIGHT AND BODY GROUND) |
Disconnect the C24 park/neutral position switch connector.
for LH:
Disconnect the S11 light connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
C24-1 (RL) - S11-2 (B)
| Always
| Below 1 Ω
|
S11-1 (E) - Body ground
|
S11-2 (B) - Body ground
| Always
| 10 kΩ or higher
|
for RH:
Disconnect the S12 light connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
C24-1 (RL) - S12-2 (B)
| Always
| Below 1 Ω
|
S12-1 (E) - Body ground
|
S12-2 (B) - Body ground
| Always
| 10 kΩ or higher
|
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
OK |
|
|
|
PROCEED TO NEXT INSPECTION PROCEDURE SHOWN IN PROBLEM SYMPTOMS TABLE (Click here) |
|
8.INSPECT BACK-UP LIGHT SWITCH |
Remove the back-up light switch (Click here).
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Switch Condition
| Specified Condition
|
1 - 2
| On (pushed)
| Below 1 Ω
|
1 - 2
| Off (released)
| 10 kΩ or higher
|
| REPLACE BACK-UP LIGHT SWITCH ASSEMBLY (Click here) |
|
|
9.CHECK HARNESS AND CONNECTOR (BACK-UP LIGHT SWITCH - BATTERY) |
Disconnect the C39 back-up light switch connector.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection
| Switch Condition
| Specified Condition
|
C39-2 - Body ground
| Ignition switch ON
| 11 to 14 V
|
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
Check the vehicle type.
ResultResult
| Proceed to
|
for Double Swing Out Type
| A
|
except Double Swing Out Type
| B
|
11.CHECK HARNESS AND CONNECTOR (BACK-UP LIGHT SWITCH - BACK-UP LIGHT AND BODY GROUND) |
Disconnect the C39 back-up light switch connector.
for LH:
Disconnect the O8 light connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
C39-1 - O8-2
| Always
| Below 1 Ω
|
O8-1 - Body ground
|
O8-2 - Body ground
| Always
| 10 kΩ or higher
|
for RH:
Disconnect the O7 light connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
C39-1 - O7-2
| Always
| Below 1 Ω
|
O7-1 - Body ground
|
O7-2 - Body ground
| Always
| 10 kΩ or higher
|
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
OK |
|
|
|
PROCEED TO NEXT INSPECTION PROCEDURE SHOWN IN PROBLEM SYMPTOMS TABLE (Click here) |
|
12.CHECK HARNESS OR CONNECTOR (BACK-UP LIGHT SWITCH - REAR LIGHT AND BODY GROUND) |
Disconnect the C39 back-up light switch connector.
for LH:
Disconnect the S11 light connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
C39-1 - S11-2 (B)
| Always
| Below 1 Ω
|
S11-1 (E) - Body ground
|
S11-2 (B) - Body ground
| Always
| 10 kΩ or higher
|
for RH:
Disconnect the S12 light connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
C39-1 - S12-2 (B)
| Always
| Below 1 Ω
|
S12-1 (E) - Body ground
|
12-2 (B) - Body ground
| Always
| 10 kΩ or higher
|
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
OK |
|
|
|
PROCEED TO NEXT INSPECTION PROCEDURE SHOWN IN PROBLEM SYMPTOMS TABLE (Click here) |
|