Pinpoint Test E: DTC B1681
Anti-Theft
Pinpoint Test E: DTC B1681
Refer to Wiring Diagram Set 112, Passive Anti-Theft System for schematic and connector information.
Normal Operation
The Passive Anti-Theft System (PATS) transceiver receives voltage from the Smart Junction Box (SJB) fuse 36 (5A) on circuit CBP36 (BU/BN) and is grounded on circuit GD133 (BK). The PATS transceiver and the Instrument Cluster (IC) communicate on circuits VRT23 (VT/GY) and VRT24 (YE/OG). The IC compares the key code stored in memory and sends a message to the PCM to enable the starter if the key code is correct.
- DTC B1681 (PATS Transceiver Module Signal Is Not Received) - sets when the PATS transceiver signal is not received by the IC. This DTC can be caused by circuits to the PATS transceiver, circuits between the PATS transceiver and the IC, the PATS transceiver or the IC. This can also be caused by using the incorrect PATS transceiver part number.
This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- PATS transceiver
- IC
PINPOINT TEST E: DTC B1681
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
E1-E3:
E3-E5:
E6-E8:
E8-E10:
E10-E12:
