DTC B1520

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DTC B1520

B3E090200200W04

DTC B1520 | Bonnet latch switch circuit open
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DETECTION CONDITION | Open circuit in wiring harness between PJB and bonnet latch switch
POSSIBLE CAUSE | • Open circuit in wiring harness between PJB terminal J-02 Y and front door latch and bonnet latch switch terminal A • Bonnet latch switch malfunction • PJB malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | INSPECT BONNET LATCH SWITCH CONNECTOR • Turn the ignition switch off. • Disconnect the bonnet latch switch connector. • Inspect the bonnet latch switch 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 5.
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 5.
No | Go to the next step.
3 | INSPECT BONNET LATCH SWITCH SIGNAL CIRCUIT FOR OPEN CIRCUIT • Inspect for continuity between PJB terminal J-02 Y (wiring harness-side) and bonnet latch switch terminal A (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 5.
4 | INSPECT BONNET LATCH SWITCH • Inspect the bonnet latch switch. (See BONNET LATCH SWITCH INSPECTION.) • Is there any malfunction? | Yes | Replace the bonnet latch switch, then go to the next step. (See BONNET LATCH AND RELEASE LEVER REMOVAL/INSTALLATION [R.H.D.].)
No | Go to the next step.

5

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 PJB.
(See PASSENGER JUNCTION BOX (PJB) REMOVAL/INSTALLATION.)

No | DTC troubleshooting completed.