Test E: DTC C1742 - Rear Sounder Circuit Failure and C1743 - Rear Sounder Circuit Short To Vbatt

PINPOINT TEST E: DTC C1742 - REAR SOUNDER CIRCUIT FAILURE AND C1743 - REAR SOUNDER CIRCUIT SHORT TO VBATT

E1-E3:

E3-E4:

E5-E7:

Normal Operation
The system can be disabled by the parking aid switch. A 750 Hz variable warning tone is generated from a parking aid speaker. The parking aid speaker increases the warning tone rate as the vehicle gets closer to an obstacle.

Possible Causes
- Circuit 1437 (BK/PK) open or short to ground
- Circuit 1438 (DG) open, short to ground or voltage
- Parking aid module
- Parking aid speaker