Mercedes-Benz Sprinter / Dodge Sprinter. Service manual — part 31
TEST
ACTION
APPLICABILITY
4
Turn the ignition off.
Disconnect the DRBIII
t from the DLC.
Disconnect the SSM harness connectors.
Turn the ignition on.
Using a 12-volt test light connected to ground, probe the K-CTM, SSM circuit.
NOTE: The test light must illuminate brightly. Compare the brightness to
that of a direct connection to the battery.
Does the test light illuminate brightly?
All
Yes
→ Go To 5
No
→ Go To 6
5
Turn the ignition off.
Disconnect the Central Timer Module harness connectors.
Turn the ignition on.
Using a 12-volt test light connected to ground, probe the K-CTM, SSM circuit.
NOTE: The test light must illuminate brightly. Compare the brightness to
that of a direct connection to the battery.
Does the test light illuminate brightly?
All
Yes
→ Repair the K-CTM, SSM circuit for a short to voltage.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Central Timer Module in accordance with the service
information.
Perform BODY VERIFICATION TEST - VER 1.
6
Turn the ignition off.
Disconnect the SSM harness connectors.
Disconnect the DRBIII
t from the DLC.
Measure the resistance of the K-CTM, SSM circuit between the SSM connector and
the DLC.
Is the resistance below 5.0 ohms?
All
Yes
→ Replace the Security System Module in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Repair the K-CTM, SSM circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
121
COMMUNICATION
*NO RESPONSE FROM SECURITY SYSTEM MODULE —
Continued
Symptom:
*NO RESPONSE FROM SENTRY KEY REMOTE ENTRY MODULE
POSSIBLE CAUSES
CHECK POWERS AND GROUNDS TO THE SENTRY KEY REMOTE ENTRY MODULE
K-SKREEM CIRCUIT SHORTED TO GROUND
K-SKREEM CIRCUIT SHORTED TO VOLTAGE
K-SKREEM CIRCUIT OPEN
SENTRY KEY REMOTE ENTRY MODULE
TEST
ACTION
APPLICABILITY
1
Turn the ignition off.
Disconnect the SKREEM harness connector.
Check each power and ground circuit to the module.
Were any problems found?
All
Yes
→ Refer to the wiring diagrams located in the service information to
help isolate an open or shorted condition. Repair as necessary.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 2
2
Turn the ignition off.
Disconnect the SKREEM harness connector.
Disconnect the DRBIII
t from the DLC.
Measure the resistance between ground and the K-SKREEM circuit.
Is the resistance below 5.0 ohms?
All
Yes
→ Repair the K-SKREEM circuit for a short to ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
3
Turn the ignition off.
Disconnect the DRBIII
t from the DLC.
Disconnect the SKREEM harness connector.
Turn the ignition on.
Using a 12-volt test light connected to ground, probe the K-SKREEM circuit.
NOTE: The test light must illuminate brightly. Compare the brightness to
that of a direct connection to the battery.
Does the test light illuminate brightly?
All
Yes
→ Repair the K-SKREEM circuit for a short to voltage.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 4
122
COMMUNICATION
TEST
ACTION
APPLICABILITY
4
Turn the ignition off.
Disconnect the SKREEM harness connector.
Disconnect the DRBIII
t from the DLC.
Measure the resistance of the K-SKREEM circuit between the SKREEM connector
and the DLC.
Is the resistance below 5.0 ohms?
All
Yes
→ Replace and program the Sentry Key Remote Entry Module in
accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Repair the K-SKREEM circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
123
COMMUNICATION
*NO RESPONSE FROM SENTRY KEY REMOTE ENTRY MODULE —
Continued
Symptom:
*NO RESPONSE FROM SHIFTER ASSEMBLY
POSSIBLE CAUSES
CHECK POWERS AND GROUNDS TO THE SHIFTER ASSEMBLY
CONTROLLER ANTILOCK BRAKE
K-ABS, SHIFTER ASSEMBLY CIRCUIT SHORTED TO GROUND
CONTROLLER ANTILOCK BRAKE
K-ABS, SHIFTER ASSEMBLY CIRCUIT SHORTED TO VOLTAGE
K-ABS, SHIFTER ASSEMBLY CIRCUIT OPEN
SHIFTER ASSEMBLY
TEST
ACTION
APPLICABILITY
1
Turn the ignition off.
Disconnect the Shifter Assembly harness connector.
Check each power and ground circuit to the module.
Were any problems found?
All
Yes
→ Refer to the wiring diagrams located in the service information to
help isolate an open or shorted condition. Repair as necessary.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.
No
→ Go To 2
2
Turn the ignition off.
Disconnect the Shifter Assembly harness connector.
Disconnect the DRBIII
t from the DLC.
Measure the resistance between ground and the K-ABS, Shifter Assembly circuit.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 3
No
→ Go To 4
3
Turn the ignition off.
Disconnect the CAB harness connector.
Measure the resistance between ground and the K-ABS, Shifter Assembly circuit.
Is the resistance below 5.0 ohms?
All
Yes
→ Repair the K-ABS, Shifter Assembly circuit for a short to ground.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.
No
→ Replace the Controller Antilock Brake in accordance with the
service information.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.
124
COMMUNICATION
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