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 power source control ECU, a short in the IG output circuit inside the power source control ECU, a short between the power source control ECU and relay, and a short in the relay is detected.

HINT: When the power source control 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.

Wiring Diagram:

Step 1-3:

Step 4-5:

Step 5 (Continued)-7:

Step 8-9:

Step 10-11:

INSPECTION PROCEDURE