B10C2 – REAR DEFROST SWITCH STUCK (CCN)
For a complete wiring diagram Refer to Section 8W.
Possible Causes
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(D506) LIN BUS CIRCUIT SHORTED TO GROUND
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SWITCH BANK STUCK
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INSTRUMENT CLUSTER
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1.
VERIFY DTC B10C2 – REAR DEFROST SWITCH STUCK IS ACTIVE
Turn the ignition on.
With the scan tool, check for DTCs.
Turn the ignition off, wait 10 seconds, and turn the ignition on.
Does the scan tool display this DTC as active?
Yes
No
-
The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced,
pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.
-
Perform the BODY VERIFICATION TEST – VER 1.
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
2.
CHECK FOR DTC B10C2 – REAR DEFROST SWITCH STUCK WITH SWITCH BANK (REAR DEFOGGER SWITCH) DISCONNECTED
Turn the ignition off.
With the scan tool, erase DTC's.
Disconnect the Switch Bank connector.
Turn the ignition on.
With the scan tool, read DTC's.
Does the scan tool display this code as active?
No
Yes
3.
(D506) LIN BUS CIRCUIT SHORTED TO GROUND
Turn the ignition off.
Disconnect the Instrument Cluster (CCN) C2 harness connector.
Measure the resistance between ground and the (D506) LIN Bus circuit.
Does the ohm meter read open circuit?
Yes
No