Normal Operation

The Parking Aid Module (PAM) supplies a reference voltage and signal return to the active park assist sensors. A fault condition occurs when the PAM detects a short to voltage on the active park assist sensor signal circuit.

• DTC B129C:12 (Left Front Side Sensor: Circuit Short To Battery) - a continuous and on-demand DTC that sets when the left active park assist sensor signal line is shorted to battery voltage.
• DTC B129D:12 (Right Front Side Sensor: Circuit Short To Battery) - a continuous and on-demand DTC that sets when the right active park assist sensor signal circuit is shorted to battery voltage.

This pinpoint test is intended to diagnose the following: 

• Wiring, terminals or connectors
• Active park assist sensor(s)
• PAM