Mercedes-Benz Sprinter 2003 Manual page 127

*NO RESPONSE FROM SECURITY SYSTEM MODULE —
TEST
4 Turn the ignition off.
Disconnect the DRBIII 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?
Yes → Go To 5
→ Go To 6
No
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?
Yes → Repair the K-CTM, SSM circuit for a short to voltage.
→ Replace the Central Timer Module in accordance with the service
No
6 Turn the ignition off.
Disconnect the SSM harness connectors.
Disconnect the DRBIII 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?
Yes → Replace the Security System Module in accordance with the
→ Repair the K-CTM, SSM circuit for an open.
No
ACTION
Perform BODY VERIFICATION TEST - VER 1.
information.
Perform BODY VERIFICATION TEST - VER 1.
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
119
COMMUNICATION
Continued
APPLICABILITY
All
All
All