DTC 66: Passenger Seat Belt PRETENSIONER Short To Battery

Disconnect Air Bag Diagnostic Unit (ADU) connector and passenger seat belt pretensioner connector. Measure voltage between ADU connector terminal No. 3 (Black wire) and ground. See Figure. Measure voltage between ADU terminal No. 4 (White wire) and ground. If voltage is present in either circuit, replace passenger seat belt pretensioner wire harness. If voltage is not present in either circuit, go to next step.
Measure voltage between passenger seat belt pretensioner harness terminal No. 3 (Black wire) and ground. See Figure. Measure voltage between passenger seat belt pretensioner terminal No. 4 (White wire) and ground. If voltage is present in either circuit, replace passenger seat belt pretensioner harness. If voltage is not present in either circuit, replace passenger seat belt pretensioner. See SEAT BELT PRETENSIONER under REMOVAL & INSTALLATION.