2007 Grand Cherokee WK Factory Service Manual 8 - ELECTRICAL

B124F-PTS SENSOR 3 CIRCUIT LOW





For a complete wiring diagram Refer to Section 8W.



Possible Causes
 
(D706) PARK ASSIST SENSOR NO. 3 SIGNAL CIRCUIT SHORTED TO GROUND
 
PARK ASSIST SENSOR NO. 3
 
PARK ASSIST MODULE
 




Diagnostic Test

1. CHECK FOR ACTIVE DTC: B124F-PTS SENSOR 3 CIRCUIT LOW

Turn the ignition on.
Apply the vehicle park brake.
Shift the transmission into reverse.
With the scan tool, record and erase Park Assist Module DTCs.
Wait 30 seconds.
With the scan tool, read Park Assist Module DTCs.

Is DTC: B124F-PTS SENSOR 3 CIRCUIT LOW active?

Yes


No

2. CHECK PARK ASSIST SENSOR NO. 3 FOR A SHORT TO GROUND



Shift the transmission into park.
With the scan tool, erase DTCs.
Turn the ignition off.
Disconnect Park Assist Sensor No. 3.
Turn the ignition on.
Shift the transmission into reverse.
With the scan tool, read Park Assist Module DTCs.

Does the scan tool display: B124F-PTS SENSOR 3 CIRCUIT LOW?

Yes


No

3. CHECK THE (D706) PARK ASSIST SENSOR NO. 3 SIGNAL CIRCUIT FOR A SHORT TO GROUND



Turn the ignition off.
Disconnect the Park Assist Module harness connector.
Measure the resistance between ground and the (D706) Park Assist Sensor No. 3 Signal circuit.

Is the resistance below 10K ohms?

Yes


No