Chrysler Crossfire. Manual — part 360

CAN B BUS (-) CIRCUIT FAILURE (CONTINUED)

2.

MEASURE THE VOLTAGE OF THE CAN B BUS (-) CIRCUIT

Turn the ignition on.

Measure the voltage of the CAN B Bus (-) circuit at the CLP/SSM har-
ness connector.

Is voltage present?

Yes

>> Repair the CAN B Bus (-) circuit for a short to voltage.

Perform VTSS VERIFICATION TEST.

No

>> Go to 3

3.

MEASURE THE RESISTANCE OF THE CAN B BUS (-) CIRCUIT

Turn the ignition off.

Measure the resistance between ground and the CAN B Bus (-) circuit
at the CLP/SSM harness connector.

Is the resistance below 10K ohms?

Yes

>> Repair the CAN B Bus (-) circuit for a short to ground.

Perform VTSS VERIFICATION TEST.

No

>> Replace the Central Locking Pump/Security System Mod-

ule. (Refer to 8 - ELECTRICAL/VEHICLE THEFT SECU-
RITY/SENTRY

KEY

REMOTE

ENTRY

MODULE

-

REMOVAL).

Perform VTSS VERIFICATION TEST.

ZH

VEHICLE THEFT SECURITY - ELECTRICAL DIAGNOSTICS

8Q - 13

CAN B BUS (+) CIRCUIT FAILURE

8Q - 14

VEHICLE THEFT SECURITY - ELECTRICAL DIAGNOSTICS

ZH

CAN B BUS (+) CIRCUIT FAILURE (CONTINUED)

When Monitored and Set Condition

•

When Monitored: Continuous.

•

Set Condition: CAN B Bus (+) communication failure between the Body Control Module (BCM) and the Central
Locking Pump/Security System Module (CLP/SSM).

POSSIBLE CAUSES

CAN B BUS (+) CIRCUIT SHORTED TO VOLTAGE

CAN B BUS (+) CIRCUIT SHORTED TO GROUND

CAN B BUS (+) CIRCUIT OPEN

CENTRAL LOCKING PUMP/SECURITY SYSTEM MODULE

For a complete Vehicle Theft Security System Circuit Diagram, (Refer to 8 - ELECTRICAL/VEHICLE THEFT SECU-
RITY - SCHEMATICS AND DIAGRAMS).

Diagnostic Test

1.

MEASURE THE RESISTANCE OF THE CAN B BUS (+) CIRCUIT

Turn the ignition off.

Disconnect the BCM harness connector.

Disconnect the CLP/SSM harness connector.

Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the CAN B Bus (+) circuit from the BCM
harness connector to the CLP/SSM harness connector.

Is the resistance below 1.0 ohm?

Yes

>> Go to 2

No

>> Repair the CAN B Bus (+) circuit for an open.

Perform VTSS VERIFICATION TEST.

ZH

VEHICLE THEFT SECURITY - ELECTRICAL DIAGNOSTICS

8Q - 15

CAN B BUS (+) CIRCUIT FAILURE (CONTINUED)

2.

MEASURE THE VOLTAGE OF THE CAN B BUS (+) CIRCUIT

Turn the ignition on.

Measure the voltage of the CAN B Bus (+) circuit at the CLP/SSM har-
ness connector.

Is voltage present?

Yes

>> Repair the CAN B Bus (+) circuit for a short to voltage.

Perform VTSS VERIFICATION TEST.

No

>> Go to 3

3.

MEASURE THE RESISTANCE OF THE CAN B BUS (+) CIRCUIT

Turn the ignition off.

Measure the resistance between ground and the CAN B Bus (+) circuit
at the CLP/SSM harness connector.

Is the resistance below 10K ohms?

Yes

>> Repair the CAN B Bus (+) circuit for a short to ground.

Perform VTSS VERIFICATION TEST.

No

>> Replace the Central Locking Pump/Security System Mod-

ule. (Refer to 8 - ELECTRICAL/VEHICLE THEFT SECU-
RITY/SENTRY

KEY

REMOTE

ENTRY

MODULE

-

REMOVAL).

Perform VTSS VERIFICATION TEST.

8Q - 16

VEHICLE THEFT SECURITY - ELECTRICAL DIAGNOSTICS

ZH