Diagnosis Procedure
1. CHECK BCM POWER SUPPLY AND GROUND CIRCUIT
Check BCM power supply and ground circuit.
2. CHECK SUNROOF MOTOR ASSEMBLY POWER SUPPLY AND GROUND CIRCUIT
Check sunroof motor assembly power supply and ground circuit.
Auto operation does not operateWashing
Wash dirt off with a wet sponge and plenty of
water. Clean the vehicle thoroughly using a mild
soap, a special vehicle soap or general purpose
dishwashing liquid mixed with clean, lukewarm
(never hot) water.
CAUTION
Do not use car washes that use acid in
the detergent. Some car washes, es ...
P0420, P0430 three way catalyst function
DTC Logic
DTC DETECTION LOGIC
The ECM monitors the switching frequency ratio of air fuel ratio (A/F)
sensor 1 and heated oxygen sensor 2.
A three way catalyst (manifold) with high oxygen storage capacity
will indicate a low switching frequency of heated oxygen sensor 2.
As oxygen sto ...
Preparation
Special Service Tool
The actual shapes of the tools may differ from those illustrated here.
Commercial Service Tool
Sealant and/or Lubricant
...