Tests AY

PINPOINT TEST AY: DTCs C1700, C1703, C1706, C1709, C1712, C1715, C1718 AND C1740 PARKING AID SENSOR CIRCUIT FAILURE/B1299 POWER SUPPLY SENSOR CIRCUIT SHORT TO GROUND

Test AY1-AY2:

Test AY2 Continued:

Test AY2-AY3:

Test AY3 Continued:

Test AY3-AY4:

Normal Operation
The rear only parking aid system is enabled when the vehicle ignition is in RUN and transmission is in REVERSE. For a front and rear system the front and rear sensors will always be active when the transmission is in REVERSE with the vehicle ignition in RUN. When the transmission is in DRIVE the front sensors will be active if the vehicle speed is above 0 km/h and below 8 km/h (5 mph). The parking aid module supplies power to the parking aid sensors on circuits 1439 (BN/PK) and 2082 (YE/RD). The parking aid module supplies ground to the parking aid sensors on circuit 1440 (DG/YE) and 2083 (BK/PK). The parking aid module receives a signal from the parking aid sensors on circuits 1444 (DB/YE), 1443 (WH/LB), 1442 (DG/WH), 1441 (WH/LG), 2078 (PK/WH), 2079 (LG/BK), 2080 (GY/BK), and 2081 (LB/YE).

Possible Causes
- parking aid sensor
- parking aid module
- circuit 140 (BK/PK) open
- circuit 1438 (DG) open, shorted to ground
- circuit 1439 (BN/PK) open or shorted to ground
- circuit 1440 (DG/YE) open
- circuit 1441 (WH/LG) open, shorted to ground
- circuit 1442 (DG/WH) open, shorted to ground
- circuit 1443 (WH/LB) open, shorted to ground
- circuit 1444 (DB/YE) open, shorted to ground