*NO RESPONSE FROM WCM (SENTRY KEY REMOTE ENTRY MODULE)
For a complete wiring diagram Refer to Section 8W.
Possible Causes
|
(A412) FUSED B(+) CIRCUIT OPEN OR SHORTED
|
(Z914) GROUND CIRCUIT OPEN
|
(F20) FUSED IGNITION SWITCH OUTPUT (RUN/START) CIRCUIT OPEN OR SHORTED
|
(D65) CAN C BUS (+) CIRCUIT OPEN
|
(D64) CAN C BUS (-) CIRCUIT OPEN
|
SENTRY KEY REMOTE ENTRY MODULE
|
Diagnostic Test
1.
TEST FOR INTERMITTENT CONDITION
Turn the ignition on.
NOTE:
Ensure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts.
With the scan tool, select ECU View.
NOTE:
A red X will be next to the module that is not communicating, indicating that the module is not active on the Bus network. A green check indicates that the module is
active on the Bus network.
Does the scan tool display a red X next to the module?
Yes
No
-
The no response condition is not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring for chafed, pierced, pinched, and partially
broken wires and the wiring harness connectors for broken, bent, pushed out, and corroded terminals.
2.
(A412) FUSED B(+) CIRCUIT OPEN OR SHORTED
Turn the ignition off.
Disconnect the Sentry Key Remote Entry Module harness connector.
Using a 12-volt test light connected to ground, check the (A412) Fused B(+) circuit.
Does the test light illuminate brightly?
Yes
No
-
Repair the (A412) Fused B(+) circuit for an open or short.
-
Perform SKREEM VERIFICATION TEST.
3.
(Z914) GROUND CIRCUIT OPEN
Using a 12-volt test light connected to 12-volts, check the (Z914) ground circuit.
Does the test light illuminate brightly?
Yes
No
-
Repair the (Z914) ground circuit for an open.
-
Perform SKREEM VERIFICATION TEST.
4.
(F20) FUSED IGNITION SWITCH OUTPUT (RUN/START) CIRCUIT OPEN OR SHORTED
Turn the ignition on.
Using a 12-volt test light connected to ground, check the (F20) Fused Ignition Switch Output (Run/Start) circuit.
Does the test light illuminate brightly?
Yes
No
-
Repair the (F20) Fused Ignition Switch Output (Run/Start) circuit for an open or short.
-
Perform SKREEM VERIFICATION TEST.
5.
(D65) CAN C BUS (+) CIRCUIT OPEN
Turn the ignition off.
Disconnect the TIPM C1 harness connector.
Measure the resistance of the (D65) CAN C Bus (+) circuit between the TIPM C1 harness connector and the Sentry Key Remote Entry Module connector.
Is resistance below 5.0 ohms?
Yes
No
-
Repair the (D65) CAN C Bus (+) circuit for an open.
-
Perform the SKREEM VERIFICATION TEST.
6.
(D64) CAN C BUS (-) CIRCUIT OPEN
Measure the resistance of the (D64) CAN C Bus (-) circuit between the TIPM C1 harness connector and the Sentry Key Remote Entry Module connector.
Is resistance below 5.0 ohms?
Yes
-
Replace the Sentry Key Remote Entry Module in accordance with the service information.
-
Perform the SKREEM VERIFICATION TEST.
No
-
Repair the (D64) CAN C Bus (-) circuit for an open.
-
Perform the SKREEM VERIFICATION TEST.