TEST
ACTION
APPLICABILITY
3
Ensure the ignition key is off while disconnecting the following Modules.
Disconnect the following Components from the CCD Bus one at a time in an orderly
manner (be sure to turn the ignition off before disconnecting any Module). After
disconnecting, turn the ignition back on.
Observe the DRB Bus message for a change after each Module is disconnected which
will identify that module/circuits as being the cause of the Bus Failure Message.
Disconnect the TCM harness connector if equipped.
Disconnect the Overhead Console harness connector if equipped.
Remove the Instrument Cluster from the Instrument Panel.
Disconnect the RKE Module harness connector if equipped.
Disconnect the SKIM harness connector if equipped.
TURN IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES
BEFORE PROCEEDING.
Disconnect the ACM harness connector.
TURN IGNITION ON, THEN RECONNECT THE BATTERY.
Did the DRB Bus message change after disconnecting any one module/component?
All
Yes
→
Go To
4
No
→
Go To
5
4
Turn the ignition off.
Disconnect the harness connectors on the module that when disconnected the bus
failure message was eliminated.
Measure the resistance between the CCD Bus (+) circuit and each 5 volt circuit in the
harness connector.
Measure the resistance between the CCD Bus (-) circuit and each 5 volt circuit in the
harness connector.
Is the resistance below 100.0 ohms on any of the measurements?
All
Yes
→
Repair the CCD Bus circuit for a short to a 5 volt circuit.
Perform BODY VERIFICATION TEST - VER 1.
No
→
Replace the module/component that caused the bus failure mes-
sage.
Perform BODY VERIFICATION TEST - VER 1.
5
All modules must be disconnected from the CCD Bus circuit at this time.
Turn the ignition on.
Measure the CCD Bus (+) circuit and the CCD Bus (-) circuit at the Data Link
connector for voltage.
Is the voltage above 4.0 volts on either Bus circuit?
All
Yes
→
Repair the CCD Bus (+) or the CCD Bus (-) circuit for a short to
voltage.
Perform BODY VERIFICATION TEST - VER 1.
No
→
Go To
6
6
If there are no possible causes remaining, view repair.
All
Repair
Repair/Replace the DRB or DRB cable as necessary.
Perform BODY VERIFICATION TEST - VER 1.
76
COMMUNICATION
*SHORT TO 5 VOLTS FAILURE —
Continued