SECURITY LIGHT: 16, DTC U2510/P1260, U1147/P1260

BHE090201077W12

SECURITY LIGHT: 16

DTC: U2510/P1260

Communication error between the keyless unit and the PCM (no response)

DTC: U1147/P1260

Communication error between the keyless unit and the PCM (mismatched conditions)

DETECTION CONDITION

Keyless unit DTC: U2510

• Communication error between the keyless unit and the PCM (no response)

Keyless unit DTC: U1147

• Communication error between the keyless unit and the PCM (mismatched conditions)

POSSIBLE CAUSE

• Malfunction in the wiring harness (CAN line) between the keyless unit and the PCM
• PCM malfunction
• Keyless unit malfunction

Diagnostic Procedure

STEP

INSPECTION

ACTION

1
VERIFY DTC USING WDS
• Are either U1900 or U0073, or both, displayed, by either the keyless unit or the PCM, or both?
Yes
Perform troubleshooting according to the corresponding DTC inspection.
No
Replace the keyless unit and perform procedures for when replacing the keyless unit only.
Go to the next step.
2
VERIFY DTC
• Using the registered key, turn the ignition switch to the ON position.
• Is the DTC displayed?
– SECURITY LIGHT: 16
– WDS: U2510 or U1147/P1260
Yes
Replace the PCM and perform procedures for when replacing the PCM only.
No
DTC troubleshooting completed.