Dodge Dakota (R1). Manual — part 31
Symptom:
MIC MESSAGES NOT RECEIVED
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH THE INSTRUMENT CLUSTER (MIC)
CENTRAL TIMER MODULE
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRB, enter Body then Electro/Mech Cluster.
Was the DRB able to I/D or communicate with the Instrument Cluster (MIC)?
All
Yes
→
No
→
Refer to the Communication category for the related symptom.
Perform BODY VERIFICATION TEST - VER 1.
2
With the DRB, erase DTC’s.
Turn the ignition on and wait approximately 1 minute.
With the DRB, read DTC’s.
Did this DTC reset?
All
Yes
→
Replace the Central Timer Module.
Perform BODY VERIFICATION TEST - VER 1.
No
→
Test Complete.
121
COMMUNICATION
Symptom:
PCM MESSAGES NOT RECEIVED
POSSIBLE CAUSES
PCM MESSAGES NOT RECEIVED
ATTEMPT TO COMMUNICATE WITH THE PCM
PCI BUS CIRCUIT OPEN
POWERTRAIN CONTROL MODULE
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRB, enter Body Computer, System Tests then PCM Monitor.
Does the DRB display: PCM is active on BUS?
All
Yes
→
Replace the Central Timer Module.
Perform BODY VERIFICATION TEST - VER 1.
No
→
2
Turn the ignition on.
With the DRB, attempt to communicate with the PCM.
Was the DRB able to communicate with the PCM?
All
Yes
→
No
→
Refer to the communication category and perform the appropriate
symptom.
Perform BODY VERIFICATION TEST - VER 1.
3
Turn the ignition off.
Disconnect the PCM C3 harness connector.
Connect the diagnostic junction port tester #8339 to the diagnostic junction port.
Note: Do not connect the tester to the DRB.
Measure the resistance of the PCI Bus circuit between the diagnostic junction port
tester and the PCM C3 connector (cavity 30).
Is the resistance below 5.0 ohms?
All
Yes
→
Replace the Powertrain Control Module.
Perform BODY VERIFICATION TEST - VER 1.
No
→
Repair the PCI Bus circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
122
COMMUNICATION
Symptom:
POST FAILURE
POSSIBLE CAUSES
POST FAILURE
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRB, erase CTM DTC’s.
Turn the ignition off then turn the ignition on.
With the DRB, read CTM DTC’s.
Did this DTC reset?
All
Yes
→
Replace the Central Timer Module.
Perform BODY VERIFICATION TEST - VER 1.
No
→
Test Complete.
123
COMMUNICATION
Symptom:
ROM CHECKSUM FAILURE
POSSIBLE CAUSES
ROM CHECKSUM FAILURE
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRB, erase CTM DTC’s.
Turn the ignition off then turn the ignition on.
With the DRB, read CTM DTC’s.
Did this DTC reset?
All
Yes
→
Replace the Central Timer Module.
Perform BODY VERIFICATION TEST - VER 1.
No
→
Test Complete.
124
COMMUNICATION
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