B1A37-SECURITY TRANSMITTER SENSOR CIRCUIT LOW
For a complete wiring diagram Refer to Section 8W.
- 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 CONDITIONTurn 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 two 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/schematic 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 two 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
3. CHECK THE (A645) INTRUSION TRANSMITTER SENSOR SIGNAL CIRCUIT SHORT TO GROUND
Turn the ignition off.
Disconnect the Intrusion Transceiver Module connector.
Measure the resistance between ground and the (A645) Intrusion Transmitter Sensor Signal circuit at the Intrusion Transceiver Module connector.
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)