B2271

DTC B2271 Ignition Hold Monitor Malfunction

DESCRIPTION

DTC Detection Condition:

This DTC is output when a problem such as an open in the AM2 fuse, an open or short in the wire harness between the fuse and main body ECU, a short in the IG output circuit inside the main body ECU, a short between the main body ECU and relay, and a short in the relay is detected.

HINT: When the main body ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

After the main body ECU is replaced, perform the registration procedures for the engine immobilizer system.

Wiring Diagram:

Step 1:

Step 1 (Continued)-3:

Step 3 (Continued):

INSPECTION PROCEDURE