2007 Commander XK Factory Service Manual 8 - ELECTRICAL

B1A47-SECURITY TRANSMITTER/RECEIVER SENSOR RETURN CIRCUIT HIGH

For a complete wiring diagram Refer to Section 8W.



Possible Causes
 
TRANSMITTER (G945) SENSOR GROUND CIRCUIT SHORTED TO BATTERY
 
RECEIVER (G946) SENSOR GROUND CIRCUIT SHORTED TO BATTERY
 
INTRUSION TRANSCEIVER MODULE
 




Diagnostic Test

1. DETERMINING IF DTC IS CURRENT

NOTE: Diagnose any related Communication DTC(s) before continuing.


With a scan tool, read and record DTC(s).
With the scan tool, clear DTC(s).
Turn the ignition off and remove the key from the ignition.
Lock and close all doors to allow the VTSS to go from pre-arm to armed status and wait one minute.
Disarm the VTSS.
Using the scan tool, read DTC(s).

Does the DTC reset?

Yes


No

2. CHECK THE (G946) SENSOR GROUND CIRCUIT SHORT TO BATTERY



Turn the ignition off.
Disconnect the Intrusion Sensor Receiver connector.
Disconnect the Intrusion Transceiver Module connector.
Turn the ignition on.
Measure the voltage of the (G946) Sensor Ground circuit in the Intrusion Sensor Receiver connector.

Is there any voltage present?

Yes


No

3. CHECK THE (G945) SENSOR GROUND CIRCUIT SHORT TO BATTERY



Turn the ignition off.
Disconnect the Intrusion Sensor Transmitter connector.
Turn the ignition on.
Measure the voltage of the (G945) Sensor Ground circuit in the Intrusion Sensor Transmitter connector.

Is there any voltage present?

Yes


No