418-00-3 Module Communications Network 418-00-3
DIAGNOSIS AND TESTING (CONTINUED)
Pinpoint Tests
PINPOINT TEST A: POWERTRAIN CONTROL MODULE (PCM) DOES NOT RESPOND TO THE
WDS
CONDITIONS
DETAILS/RESULTS/ACTIONS
A1: CHECK THE ISO 9141 LINE TO THE PCM FOR OPEN
1.
2.
PCM C43
3 Measure the resistance between PCM,
connector C43, pin 55, circuit 4-PB10 (GY/VT),
harness side and data link connector C31, pin
7, circuit 4-DA1 (GY), harness side.
• Is the resistance less than 2 ohms?
Yes
CHECK the PCM. If necessary INSTALL a
new one. TEST the system for normal
operation.
No
REPAIR the open circuit(s) between PCM
and data link connector by using the wiring
diagrams. TEST the system for normal op-
eration.
PINPOINT TEST B: INSTRUMENT CLUSTER DOES NOT RESPOND TO THE WDS
CONDITIONS
DETAILS/RESULTS/ACTIONS
B1: CHECK THE ISO 9141 LINE TO THE INSTRUMENT CLUSTER FOR OPEN
1.
2.
Instrument cluster
C37
E9429 EN 07/2001 2002 Bantam
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