B2553

B2553 IGNITION RELAY

Description
BCM turns ON the following relays to ignition power supply to each ECU when the ignition switch is turned ON.
- Ignition relay (inserted into fuse block)
- Ignition relay (built into IPDM E/R)
- Blower relay

BCM checks any ignition relay ON request for consistency with the actual ignition relay operation status.

DTC Logic

DTC DETECTION LOGIC






DTC CONFIRMATION PROCEDURE

Step 1:

Diagnosis Procedure

Step 1-3:

Step 3 (Continued)-4: