Removal and installation
Basic inspectionP1612 chain of ECM-IMMU
Description
BCM performs the ID verification with ECM that allows the
engine to start. Start the engine if the ID is OK.
ECM prevents the engine from starting if the ID is not registered. BCM starts
the communication with ECM if
ignition switch is turned ON.
DTC Logic
DTC DETECTION LOGIC ...
Air bags, seat belts and child restraints
Top tether strap anchor
Rear head restraints/headrests
Rear seat belts
Roof-mounted curtain side-impact and
rollover supplemental air bag
Front seat-mounted side-impact
supplemental air bags
Front head restraints/headrests
Front seat belt with pretensioner(s) and
shoulder he ...
HVAC branch line circuit
Diagnosis Procedure
1.CHECK CONNECTOR
Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
Check the terminals and connectors of the A/C auto amp. for
damage, bend and loose connection (unit
side and connector side).
2.CHECK HARNESS FOR OPEN CIRCUI ...