Diagnosis Procedure
1.CHECK CONNECTOR
2.CHECK HARNESS FOR OPEN CIRCUIT

3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the BCM. Refer to BCS-36, "Diagnosis Procedure".
ECM branch line circuit
DLC branch line circuitExhaust Manifold And Three Way Catalyst
Exploded View
Gasket
Exhaust manifold (RH)
Exhaust manifold heat shield (RH)
Air fuel ratio sensor 1 (bank 1)
Ring gasket
Three way catalyst (bank 1)
Three way catalyst support (bank 1)
Heated oxygen sensor 2 (bank 1)
Three way catalyst (bank 2)
Three way catalyst suppor ...
B2555 stop lamp
Description
BCM detects the stop lamp status and confirms the stop
lamp switch ON/OFF status. BCM confirms the
engine start condition according to the stop lamp switch ON/OFF status.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
  ...
Preparation
Special Service Tool
The actual shapes of the tools may differ from those illustrated here.
Commercial Service Tool
Sealant and/or Lubricant
...