Mercedes-Benz Sprinter / Dodge Sprinter. Manual - part 90

TEST

ACTION

APPLICABILITY

Turn the ignition off.
Disconnect the IC harness connectors.
Check all of the IC’s power circuits for a short or open condition.
Check all of the IC’s ground circuits for an open condition.
Were any problems found?

All

Yes

→ Repair the power/ground circuit(s) as necessary.

Perform ABS VERIFICATION TEST - VER 1.

→ Go To 5

Turn the ignition off.
Disconnect the IC harness connectors.
Measure the resistance between the CAN C Bus (+) circuit and the CAN C Bus (-)
circuit in the IC harness connector.
Is the resistance 57 to 63 ohms?

All

Yes

→ Replace the Instrument Cluster in accordance with the Service

Information.
Perform ABS VERIFICATION TEST - VER 1.

→ Repair the CAN C Bus (+)/CAN C Bus (-) circuit(s) for an open.

Perform ABS VERIFICATION TEST - VER 1.

Turn the ignition off.
Disconnect the CAB harness connector.
Measure the resistance between the CAN C Bus (+) circuit and the CAN C Bus (-)
circuit in the CAB harness connector.
Is the resistance 57 to 63 ohms?

All

Yes

→ Replace the Controller Antilock Brake in accordance with the

Service Information.
Perform ABS VERIFICATION TEST - VER 1.

→ Repair the CAN C Bus (+)/CAN C Bus (-) circuit(s) for an open.

Perform ABS VERIFICATION TEST - VER 1.

BRAKES (CAB)

NO COMMUNICATION WITH IC —

Continued

Symptom:

PARAMETERIZATION ERROR

POSSIBLE CAUSES

PARAMETERIZATION ERROR

TEST

ACTION

APPLICABILITY

NOTE: DTC indicates the ABM has not been configured or that the info in
the module does not agree with the info in the cluster. If the cluster has been
recently replaced, refer to cluster reprogramming to ensure correct config-
uration before proceeding.
Using the DRBIII

t, view the vehicle parameters entered into this module and the

Instrument Cluster. If possible, correct any false information by performing the
configuration functions with the scan tool.
If the information cannot be corrected using the DRBIII

t, the module will need to be

replaced.
Were any problems found?

All

Yes

→ Repair as necessary.

→ Test Complete.

BRAKES (CAB)

Symptom:

PUMP MOTOR

When Monitored and Set Condition:

PUMP MOTOR

When Monitored:

Ignition On - Continuously

Set Condition:

When the pump motor voltage is not present after enabling the pump

motor relay OR pump motor has voltage when the pump motor relay is disabled OR pump
motor slow down test fails OR pump motor relay does not turn on completely.

POSSIBLE CAUSES

INTERMITTENT PUMP MOTOR DTC

DAMAGED CAB/CAB HARNESS CONNECTOR

FUSED OPTIONAL EQUIPMENT RELAY OUTPUT CIRCUIT OPEN

FUSED B(+) CIRCUIT OPEN

GROUND CIRCUIT OPEN

PUMP MOTOR

TEST

ACTION

APPLICABILITY

NOTE: If a system undervoltage or overvoltage DTC is set along with this
DTC, diagnose the system voltage DTC first.
Turn the ignition on.
With the DRBIII

t, read DTCs.

With the DRBIII

t, erase DTCs.

Turn the ignition off.
Turn the ignition on.
With the DRBIII

t, read DTCs.

Does the DRBIII

t display PUMP MOTOR?

All

Yes

→ Go To 4

→ Go To 2

Turn the ignition off.
Turn the ignition on.
With the DRBIII

t, actuate the Pump Motor.

Is the Pump Motor running?

All

Yes

→ Go To 3

→ Go To 4

BRAKES (CAB)

TEST

ACTION

APPLICABILITY

The conditions necessary to set this DTC are not present at this time.
Monitor DRBIII

t parameters while wiggle testing the related wiring harness and

connectors.
Turn the ignition off.
Visually inspect the related wiring harness and connectors.
Look for any chafed, pierced, pinched, or partially broken wires.
Look for broken, bent, pushed out, or corroded terminals.
Were any problems found?

All

Yes

→ Repair as necessary.

Perform ABS VERIFICATION TEST - VER 1.

→ Test Complete.

Turn the ignition off.
Disconnect the CAB harness connector.
Inspect the CAB/CAB harness connector for damage.
Is there any broken, bent, pushed out, corroded or spread terminals?

All

Yes

→ Repair as necessary.

Perform ABS VERIFICATION TEST - VER 1.

→ Go To 5

Turn the ignition off.
Disconnect the CAB harness connector.
Turn the ignition on.
Using a 12-volt test light connected to ground, check the Fused Optional Equipment
Relay Output circuit at the CAB harness connector.
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 6

→ Repair the Fused Optional Equipment Relay Output circuit for an

open.
Perform ABS VERIFICATION TEST - VER 1.

Turn the ignition off.
Disconnect the CAB harness connector.
Using a 12-volt test light connected to ground, check both Fused B(+) circuits at the
CAB harness connector.
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 7

→ Repair the Fused B(+) circuit for an open.

Perform ABS VERIFICATION TEST - VER 1.

BRAKES (CAB)

PUMP MOTOR —

Continued

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