Test G: DTC B1681 - Passive Anti-Theft System (PATS) Transceiver Signal Is Not Received (Not Connected, Damaged, Or Wiring)

PINPOINT TEST G: DTC B1681 - PASSIVE ANTI-THEFT SYSTEM (PATS) TRANSCEIVER SIGNAL IS NOT RECEIVED (NOT CONNECTED, DAMAGED, OR WIRING)

G1-G4:

G5-G7:

G7-G9:

G9-G11:

G11-G13:

G13-G15:

Normal Operation
The PATS transceiver receives voltage from smart junction box (SJB) fuse 5 (2A) on circuit 296 (WH/VT) and is grounded on circuit 570 (BK/WH). The PATS transceiver and the powertrain control module (PCM) communicate on circuits 167 (BR/OG) and 168 (RD/BK). The PCM compares the keycode stored in memory and sends a controller area network (CAN) signal to the transaxle control module (TCM) to start the vehicle if the key code is correct.

Possible Causes
- fuse
- circuit 296 (WH/VT) open or short to ground
- circuit 167 (BR/OG) open or short to ground
- circuit 168 (RD/BK) open or short to ground
- circuit 570 (BK/WH) open or short to voltage
- PATS transceiver
- PCM
- PATS key