8E - 56
ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS
*NO RESPONSE FROM BODY CONTROL MODULE (CONTINUED)
3.
FUSED B+ CIRCUIT(S) OPEN
Turn the ignition off.
Disconnect the BCM harness connectors.
Note: Check connector — Clean/repair as necessary.
Turn the ignition on.
Measure the voltage of the Fused B+ circuits at the BCM C4 harness
connector.
Is the voltage above 10 volts?
Yes
>> Go to 4
No
>> Repair the Fused B+ circuit(s) for an open.
Perform BODY VERIFICATION TEST.
4.
FUSED IGNITION SWITCH OUTPUT CIRCUIT(S) OPEN
With the ignition on.
Measure the voltage of the Fused Ignition Switch Output circuits at the
BCM C4 harness connector.
Is the voltage above 10 volts?
Yes
>> Go to 5
No
>> Repair the Fused Ignition Switch Output circuit(s) for an
open.
Perform BODY VERIFICATION TEST.
ZH