CIRCUIT OPERATION |
Refer to ![]() |
COMMENTS ON TROUBLE SYMPTOM |
If any of the corner sensor
indicator lamp does not illuminate or continues flashing,
the wiring harness, connectors, corner sensor/back
sonar sensor-ECU, or combination meter may be
defective. |
POSSIBLE CAUSES |
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DIAGNOSTIC PROCEDURE |
Step 1. Inspect OFF indicator and sensor indicator with ignition switch turned to ON position. |
Verify that the corner sensor OFF
indicator lamp and corner sensor indicator will illuminate
for 1 second when the ignition switch is turned to the ON
position. |
Q.
Is the check result normal?
|
YES <Both of them illuminate
normally.> : The procedure is complete. |
|
NO <Corner sensor OFF
indicator lamp and corner sensor indicator do not
illuminate.> : Diagnose the power supply system of the
combination meter. Refer to ![]() |
|
NO <Only corner sensor OFF
indicator lamp does not illuminate.> : Perform
"Corner sensor OFF indicator lamp does not illuminate."
Refer to ![]() |
|
NO <All the corner sensor
indicators do not illuminate or continue flashing.> :
Perform
"All the corner sensor indicators do not illuminate." Refer
to ![]() |
|
NO <Any of the corner sensor
indicators does not illuminate or continues
flashing.>![]() |
|
Step 2. Inspect inoperative corner sensor indicator. |
Q.
Which corner sensor indicator lamp does not illuminate
or continues flashing?
|
Only right front corner sensor
indicator does not illuminate or continues flashing.![]() |
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Only left front corner sensor
indicator does not illuminate or continues flashing.![]() |
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Only right rear corner sensor
indicator does not illuminate or continues flashing.![]() |
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Only left rear corner sensor
indicator does not illuminate or continues flashing.![]() |
|
Only rear corner sensor indicators
do not illuminate or continue flashing. : Perform "Obstacle
is not detected even when the selector lever is shifted to
"R" (reverse) position." Refer to ![]() |
|
Only the vehicle plan view does not
illuminate.![]() |
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Step 3. Connector check: Corner sensor/back sonar sensor-ECU C-137 and front corner sensor (RH) connector A-52. |
![]() ![]() |
Q.
Is the check result normal?![]() ![]() |
Step 4. Check the wiring harness between front corner sensor (RH) connector A-52 (terminal 1, 2) and corner sensor/back sonar sensor-ECU connector C-137 (terminal 6, 10). |
![]() ![]() |
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Q.
Is the check result normal?![]() ![]() |
Step 5. Connector check: Combination meter connector C-02. |
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Q.
Is the check result normal?![]() ![]() |
Step 6. Check the wiring harness between combination meter connector C-02 (terminal 1, 2) and corner sensor/back sonar sensor-ECU connector C-137 (terminal 6, 10). |
![]() ![]() |
Q.
Is the check result normal?![]() ![]() |
Step 7. Inspection with front corner sensor (RH) removed |
Inspect if the corner sensor
indicator (right front) flashes when the ignition switch is
turned to the ON position with the front corner sensor (RH)
connector A-52 disconnected. |
Q.
Does the corner sensor indicator (right front)
flash?
|
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Step 8. Verification after corner sensor/back sonar sensor-ECU replacement |
After replacing the corner
sensor/back sonar sensor-ECU, verify that the corner
sensor indicator lamp illuminates normally. |
Q.
Is the check result normal?
|
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|
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Step 9. Connector check: C-137 corner sensor/back sonar sensor-ECU connector and front corner sensor (LH) connector A-45. |
![]() ![]() |
Q.
Is the check result normal?![]() ![]() |
Step 10. Check the wiring harness between front corner sensor (LH) connector A-45 (terminal 1, 2) and corner sensor/back sonar sensor-ECU connector C-137 (terminal 5, 10). |
![]() ![]() |
![]() ![]() |
Q.
Is the check result normal?![]() ![]() |
Step 11. Connector check: Combination meter connector C-02. |
![]() |
Q.
Is the check result normal?![]() ![]() |
Step 12. Check the wiring harness between combination meter connector C-02 (terminal 29) and corner sensor/back sonar sensor-ECU connector C-137 (terminal 16). |
![]() ![]() |
Q.
Is the check result normal?![]() ![]() |
Step 13. Inspection with front corner sensor (LH) removed |
Inspect if the corner sensor
indicator (left front) flashes when the ignition switch is
turned to the ON position with the front corner sensor (LH)
connector A-45 disconnected. |
Q.
Does the corner sensor indicator (left front)
flash?
|
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|
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Step 14. Verification after corner sensor/back sonar sensor-ECU replacement |
After replacing the corner
sensor/back sonar sensor-ECU, verify that the corner
sensor indicator lamp illuminates normally. |
Q.
Is the check result normal?
|
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|
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Step 15. Connector check: Corner sensor/back sonar sensor-ECU connector C-137 and rear corner sensor (RH) connector G-27. |
![]() ![]() |
Q.
Is the check result normal?![]() ![]() |
Step 16. Check the wiring harness between rear corner sensor (RH) connector G-27 (terminal 1, 2) and corner sensor/back sonar sensor-ECU connector C-137 (terminal 8, 10). |
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Q.
Is the check result normal?![]() ![]() |
Step 17. Connector check: Combination meter connector C-02. |
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Q.
Is the check result normal?![]() ![]() |
Step 18. Check the wiring harness between combination meter connector C-02 (terminal 28) and corner sensor/back sonar sensor-ECU connector C-137 (terminal 15). |
![]() ![]() |
Q.
Is the check result normal?![]() ![]() |
Step 19. Inspection with rear corner sensor (RH) removed |
Inspect if the corner sensor
indicator (right rear) flashes when the ignition switch is
turned to the ON position with the rear corner sensor (RH)
connector G-27 disconnected. |
Q.
Does the corner sensor indicator (right rear)
flash?
|
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|
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Step 20. Verification after corner sensor/back sonar sensor-ECU replacement |
After replacing the corner
sensor/back sonar sensor-ECU, verify that the corner
sensor indicator lamp illuminates normally. |
Q.
Is the check result normal?
|
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|
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Step 21. Connector check: Corner sensor/back sonar sensor-ECU connector C-137 and rear corner sensor (LH) connector G-32. |
![]() ![]() |
Q.
Is the check result normal?![]() ![]() |
Step 22. Check the wiring harness between rear corner sensor (LH) connector G-32 (terminal 1, 2) and corner sensor/back sonar sensor-ECU connector C-137 (terminal 7, 10). |
![]() ![]() |
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Q.
Is the check result normal?![]() ![]() |
Step 23. Connector check: Combination meter connector C-02. |
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Q.
Is the check result normal?![]() ![]() |
Step 24. Check the wiring harness between combination meter connector C-02 (terminal 27) and corner sensor/back senor sensor-ECU connector C-137 (terminal 17). |
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Q.
Is the check result normal?![]() ![]() |
Step 25. Inspection with rear corner sensor (LH) removed |
Inspect if the corner sensor
indicator (left rear) flashes when the ignition switch is
turned to the ON position with the rear corner sensor (LH)
connector G-32 disconnected. |
Q.
Does the corner sensor indicator (left rear)
flash?
|
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|
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Step 26. Verification after corner sensor/back sonar sensor-ECU replacement |
After replacing the corner
sensor/back sonar sensor-ECU, verify that the corner
sensor indicator lamp illuminates normally. |
Q.
Is the check result normal?
|
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Step 27. Connector check: Corner sensor/back sonar sensor-ECU connector C-137 and combination meter connector C-02. |
![]() ![]() |
Q.
Is the check result normal?![]() ![]() |
Step 28. Check the wiring harness between combination meter connector C-02 (terminal 25) and corner sensor/back sonar sensor-ECU connector C-137 (terminal 4). |
![]() ![]() |
Q.
Is the check result normal?![]() ![]() |
Step 29. Verification after corner sensor/back sonar sensor-ECU replacement |
After replacing the corner
sensor/back sonar sensor-ECU, verify that the corner
sensor indicator lamp illuminates normally. |
Q.
Is the check result normal?
|
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