Test E: DTC B1681 - PATS Transceiver Module Signal Is Not Received

PINPOINT TEST E: DTC B1681 - PATS TRANSCEIVER MODULE SIGNAL IS NOT RECEIVED

Normal Operation
The passive anti-theft system (PATS) transceiver receives voltage from the central junction box (CJB) fuse 24 (10A) on circuit 1266 (RD/YE) and is grounded on circuit 676 (PK/OG). The PATS transceiver and the PCM communicate on circuits 1215 (WH/LG) and 1216 (GY/OG). The PCM compares the key code stored in memory and enables 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 PCM. This DTC can be caused by circuits to the PATS transceiver, circuits between the PATS transceiver and the PCM, the PATS transceiver or the PCM.

This pinpoint test is intended to diagnose the following:
- Fuse
- PATS key
- PATS transceiver
- Wiring, terminals or connectors
- PCM

E1-E2:

E2-E4:

E4-E6:

E6-E8:

E8-E10:

E10-E12:

E12-E13: