DTC U2030


id0902j0833400

DTC U2030

Rain sensor communication fault

DETECTION CONDITION

Communication error to rain sensor

POSSIBLE CAUSE

• Open circuit in wiring harness between PJB terminal J-06 AD and rain sensor terminal C
• Short to power supply in wiring harness between PJB terminal J-06 AD and rain sensor terminal C
• Short to GND in wiring harness between PJB terminal J-06 AD and rain sensor terminal C
• Rain sensor malfunction
• PJB malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
INSPECT RAIN SENSOR CONNECTOR
• Turn the ignition switch off.
• Disconnect the rain sensor connector.
• Inspect the rain sensor 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 RAIN SENSOR CIRCUIT FOR OPEN CIRCUIT
• Inspect for continuity between PJB terminal J-06 AD (wiring harness-side) and rain sensor terminal C (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 RAIN SENSOR SIGNAL CIRCUIT FOR SHORT TO GND
• Inspect for continuity between PJB terminal J-06 AD (wiring harness-side) and body GND.
• Is there continuity?
Yes
Repair or replace the wiring harness for a possible short to GND, then go to Step 6.
No
Go to the next step.
5
INSPECT RAIN SENSOR SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY
• Turn the ignition switch to the ON position (Engine off).
• Measure the voltage between PJB terminal J-06 AD (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 the next step.
No
Replace the Rain sensor, then 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 PJB.
No
Troubleshooting completed.