Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 769

B1A37–SECURITY TRANSMITTER SENSOR CIRCUIT LOW

For a complete wiring diagram Refer to Section 8W.

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VEHICLE THEFT SECURITY - ELECTRICAL DIAGNOSTICS

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•

When Monitored:
When the VTSS is armed.

•

Set Condition:
If the current flow on the sensor signal circuit is above a specified range this DTC will set.

Possible Causes

(A645) INTRUSION TRANSMITTER SENSOR SIGNAL CIRCUIT SHORTED TO GROUND

INTRUSION SENSOR TRANSMITTER

INTRUSION TRANSCEIVER MODULE

Diagnostic Test

1.

TEST FOR INTERMITTENT CONDITION

Turn the ignition on.

With the scan tool, record and erase DTC’s.

Turn the ignition off and remove the key from the ignition.

Close all doors and arm the VTSS and wait 2 minutes.

Disarm the VTSS turn the ignition on.

Turn the ignition on and with the scan tool, read DTC’s.

Does the scan tool display B1A37–SECURITY TRANSMITTER SENSOR CIRCUIT LOW ?

Yes

>> Go To 2

No

>> The conditions that caused this code to set are not present at this time. Using the wiring diagram/sche-

matic as a guide, inspect the wiring and connectors.

Perform BODY VERIFICATION TEST – VER 1 (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE)

2.

INTRUSION SENSOR TRANSMITTER

Turn the ignition off.

Disconnect the Intrusion Sensor Transmitter connector.

Turn the ignition on and with the scan tool, erase DTC’s.

Turn the ignition off and remove the key from the ignition.

Close all doors and arm the VTSS and wait 2 minutes.

Disarm the VTSS turn the ignition on.

With the scan tool, read DTC’s.

Does the scan tool display B1A41–SECURITY TRANSMITTER
SENSOR CIRCUIT OPEN?

Yes

>> Replace the Intrusion Sensor Transmitter.

Perform BODY VERIFICATION TEST – VER 1 (Refer to 8 -
ELECTRICAL/ELECTRONIC

CONTROL

MODULES

-

STANDARD PROCEDURE)

No

>> Go To 3

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VEHICLE THEFT SECURITY - ELECTRICAL DIAGNOSTICS

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3.

CHECK THE (A645) INTRUSION TRANSMITTER SENSOR SIGNAL CIRCUIT SHORT TO GROUND

Turn the ignition is off.

Disconnect the Intrusion Transceiver Module connector.

Measure the resistance between ground and the (A645) Intrusion Trans-
mitter Sensor Signal circuit at the Intrusion Transceiver Module connec-
tor.

Is the resistance below 5.0 ohms?

Yes

>> Repair the (A645) Intrusion Transmitter Sensor Signal circuit

for a short to ground.

Perform BODY VERIFICATION TEST – VER 1 (Refer to 8 -
ELECTRICAL/ELECTRONIC

CONTROL

MODULES

-

STANDARD PROCEDURE)

No

>> Replace the Intrusion Transceiver Module in accordance

with the Service Information.

Perform BODY VERIFICATION TEST – VER 1 (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE)

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VEHICLE THEFT SECURITY - ELECTRICAL DIAGNOSTICS

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B1A38–SECURITY TRANSMITTER SENSOR CIRCUIT HIGH

For a complete wiring diagram Refer to Section 8W.

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VEHICLE THEFT SECURITY - ELECTRICAL DIAGNOSTICS

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