DTC B1002

#
DTC B1002

B3E090201072W03

DTC B1002 | Auto leveling function failure
--- | ---
DETECTION CONDITION | Open circuit or short to power supply in wiring harness between PJB and auto leveling control module

POSSIBLE CAUSE

• Open circuit in wiring harness between PJB terminal J-03 Q and auto leveling control module terminal M
• Short to power supply in wiring harness between PJB terminal J-03 Q and auto leveling control module terminal M
• Auto leveling control module malfunction
• PJB malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---

1

INSPECT AUTO LEVELING CONTROL MODULE CONNECTOR
• Turn the ignition switch off.
• Disconnect the auto leveling control module connector.
• Inspect the auto leveling control module connector terminals for poor connection (such as damaged/pulled-out pins, and corrosion).
• Is there any malfunction?

Yes

Repair or replace the terminal, then go to Step 6.

No | Go to the next step.
2 | INSPECT PJB CONNECTOR • Disconnect the PJB connector. • Inspect the PJB connector terminals for poor connection (such as damaged/pulled-out pins, and corrosion). • Is there any malfunction? | Yes | Repair or replace the terminal, then go to Step 6.
No | Go to the next step.
3 | INSPECT AUTO LEVELING CONTROL CIRCUIT FOR OPEN CIRCUIT • Inspect for continuity between PJB terminal J-03 Q (wiring harness-side) and auto leveling control module terminal M (wiring harness-side). • Is there continuity? | Yes | Go to the next step.
No | Repair or replace the wiring harness for a possible open circuit, then go to Step 6.
4 | INSPECT AUTO LEVELING CONTROL CIRCUIT FOR SHORT TO POWER SUPPLY • Turn the ignition switch to the ON position (Engine off). • Measure the voltage between PJB terminal J-03 Q (wiring harness-side) and body GND. • Is the voltage B+? | Yes | Repair or replace the wiring harness for a possible short to power supply, then go to Step 6.
No | Go to the next step.
5 | INSPECT PJB • Inspect the PJB. (See PASSENGER JUNCTION BOX (PJB) INSPECTION.) • Is there any malfunction? | Yes | Replace the PJB, then go to the next step. (See PASSENGER JUNCTION BOX (PJB) REMOVAL/INSTALLATION.)
No | Go to the next step.

6

VERIFY TROUBLESHOOTING COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PJB memory using the WDS or equivalent.
• Perform the self-test.
(See PJB SELF-TEST.)
• Is the same DTC present?

Yes

Replace the auto leveling control module.
(See AUTO LEVELING CONTROL MODULE REMOVAL/INSTALLATION.)

No | DTC troubleshooting completed.