Mercedes-Benz Sprinter / Dodge Sprinter. Manual — part 28
TEST
ACTION
APPLICABILITY
4
Turn the ignition off.
Disconnect the DRBIII
t from the DLC.
Disconnect the CTM 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 Security System Module harness connector.
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 Security System Module in accordance with the
service information.
Perform BODY VERIFICATION TEST - VER 1.
6
Turn the ignition off.
Disconnect the CTM harness connectors.
Disconnect the DRBIII
t from the DLC.
Measure the resistance of the K-CTM, SSM circuit between the CTM connector and
the DLC.
Is the resistance below 5.0 ohms?
All
Yes
→ Replace the Central Timer 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.
109
COMMUNICATION
*NO RESPONSE FROM CENTRAL TIMER MODULE —
Continued
Symptom:
*NO RESPONSE FROM CONTROLLER ANTILOCK BRAKE
POSSIBLE CAUSES
CHECK POWERS AND GROUNDS TO THE CONTROLLER ANTILOCK BRAKE
SHIFTER ASSEMBLY
K-ABS, SHIFTER ASSEMBLY CIRCUIT SHORTED TO GROUND
SHIFTER ASSEMBLY
K-ABS, SHIFTER ASSEMBLY CIRCUIT SHORTED TO VOLTAGE
K-ABS, SHIFTER ASSEMBLY CIRCUIT OPEN
CONTROLLER ANTILOCK BRAKE
TEST
ACTION
APPLICABILITY
1
Turn the ignition off.
Disconnect the Controller Antilock Brake 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 ABS VERIFICATION TEST - VER 1.
No
→ Go To 2
2
Turn the ignition off.
Disconnect the CAB 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 Shifter Assembly 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 ABS VERIFICATION TEST - VER 1.
No
→ Replace the Shifter Assembly in accordance with the service
information.
Perform ABS VERIFICATION TEST - VER 1.
110
COMMUNICATION
TEST
ACTION
APPLICABILITY
4
Turn the ignition off.
Disconnect the DRBIII
t from the DLC.
Disconnect the CAB harness connector.
Turn the ignition on.
Using a 12-volt test light connected to ground, probe the K-ABS, Shifter Assembly
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 Shifter Assembly harness connector.
Turn the ignition on.
Using a 12-volt test light connected to ground, probe the K-ABS, Shifter Assembly
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-ABS, Shifter Assembly circuit for a short to voltage.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Replace the Shifter Assembly in accordance with the service
information.
Perform ABS VERIFICATION TEST - VER 1.
6
Turn the ignition off.
Disconnect the CAB harness connector.
Disconnect the DRBIII
t from the DLC.
Measure the resistance of the K-ABS, Shifter Assembly circuit between the CAB
connector and the DLC.
Is the resistance below 5.0 ohms?
All
Yes
→ Replace the Controller Antilock Brake in accordance with the
Service Information.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Repair the K-ABS, Shifter Assembly circuit for an open.
Perform ABS VERIFICATION TEST - VER 1.
111
COMMUNICATION
*NO RESPONSE FROM CONTROLLER ANTILOCK BRAKE —
Continued
Symptom:
*NO RESPONSE FROM ENGINE CONTROL MODULE
POSSIBLE CAUSES
CHECK POWERS AND GROUNDS TO THE ENGINE CONTROL MODULE
K-ECM CIRCUIT SHORTED TO GROUND
K-ECM CIRCUIT SHORTED TO VOLTAGE
K-ECM CIRCUIT OPEN
ENGINE CONTROL MODULE
TEST
ACTION
APPLICABILITY
1
Turn the ignition off.
Disconnect the Engine Control Module harness connectors.
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 ROAD TEST VERIFICATION - VER-2.
No
→ Go To 2
2
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the DRBIII
t from the DLC.
Measure the resistance between ground and the K-ECM circuit.
Is the resistance below 5.0 ohms?
All
Yes
→ Repair the K-ECM circuit for a short to ground.
Perform ROAD TEST VERIFICATION - VER-2.
No
→ Go To 3
3
Turn the ignition off.
Disconnect the DRBIII
t from the DLC.
Disconnect the ECM harness connectors.
Turn the ignition on.
Using a 12-volt test light connected to ground, probe the K-ECM 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-ECM circuit for a short to voltage.
Perform ROAD TEST VERIFICATION - VER-2.
No
→ Go To 4
112
COMMUNICATION
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