DTC B241A ESL power control circuit ground; DTC B241B ESL power control circuit open: Diagnosis

WARNING: This page is about a different car, the 2014 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.

STEP 1. Check of short to power supply, short to ground, and open circuit in PCK line between the electronic steering lock connector and the KOS-ECU connector, between the OSS-ECU connector and the KOS-ECU connector.
Q: Is the check result normal?
1. YES: Go to Step 2
2. NO: Repair the connectors or wiring harness.
STEP 2. Voltage measurement at electronic steering lock connector (PCK line)
1. Disconnect the connector, and measure the voltage at the wiring harness-side connector.
2. Open the driver's door.
3. Measure the voltage at the electronic steering lock connector (PCK line) and the body ground.
  OK: System voltage
Q: Is the check result normal?
1. YES: Go to Step 3
2. NO: Replace the electronic steering lock. Go to Step 3.
STEP 3. Check whether the diagnostic trouble code is stored again.
1. Erase the DTC.
2. Turn the power supply mode of the engine switch from OFF to ON.
3. Check if the DTC is stored.
Q: Is the DTC stored?
1. YES: Replace KOS-ECU and register the ID codes (Refer to ON-VEHICLE SERVICE < KOS-ECU > ).
2. NO: Intermittent malfunction is suspected (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).