B1236-PTS SENSOR 9 CIRCUIT LOW
For a complete wiring diagram Refer to Section 8W.
- When Monitored:
While the vehicle is in reverse for speeds less than 16km/h.
- Set Condition:
Sensor ring down time is too short (700 µsecs).
| Possible Causes |
| (D703) PARK ASSIST SENSOR NO. 9 SIGNAL CIRCUIT SHORTED TO (X750) PARK ASSIST SENSOR GROUND CIRCUIT |
| (D703) PARK ASSIST SENSOR NO. 9 SIGNAL CIRCUIT SHORTED TO (Z171) PARK ASSIST DISPLAY GROUND CIRCUIT |
| (D703) PARK ASSIST SENSOR NO. 9 SIGNAL CIRCUIT SHORTED TO (Z914) PARK ASSIST MODULE GROUND CIRCUIT |
| (D703) PARK ASSIST SENSOR NO. 9 SIGNAL CIRCUIT SHORTED TO GROUND |
| PARK ASSIST SENSOR NO. 9 |
| PARK ASSIST MODULE |
Diagnostic Test
1. CHECK FOR ACTIVE DTC: B1236-PTS SENSOR 9 CIRCUIT LOWTurn 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: B1236-PTS SENSOR 9 CIRCUIT LOW active?
Yes
- Go To 2
No
- The condition that caused this code to set is not present at this time. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)
2. CHECK PARK ASSIST SENSOR NO. 9 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. 9.
Turn the ignition on.
Shift the transmission into reverse.
With the scan tool, read Park Assist Module DTCs.
Does the scan tool display: B1236-PTS SENSOR 9 CIRCUIT LOW?
Yes
- Go To 3
No
- Replace Park Assist Sensor No. 9 in accordance with the service information.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)
3. CHECK THE (D703) PARK ASSIST SENSOR NO. 9 SIGNAL CIRCUIT FOR A SHORT TO (X750) PARK ASSIST SENSOR GROUND CIRCUIT
Turn the ignition off.
Disconnect the Park Assist Module harness connector.
Measure the resistance between the (D703) Park Assist Sensor No. 9 Signal circuit and the (X750) Park Assist Sensor Ground circuit.
Is the resistance below 10K ohms?
Yes
- Repair the (D703) Park Assist Sensor No. 9 Signal circuit for a short to the (X750) Park Assist Sensor Ground circuit.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)
No
- Go To 4
4. CHECK THE (D703) PARK ASSIST SENSOR NO. 9 SIGNAL CIRCUIT FOR A SHORT TO (Z171) PARK ASSIST DISPLAY GROUND CIRCUIT
Measure the resistance between the (D703) Park Assist Sensor No. 9 Signal circuit and the (Z171) Park Assist Display Ground circuit.
Is the resistance below 10K ohms?
Yes
- Repair the (D703) Park Assist Sensor No. 9 Signal circuit for a short to the (Z171) Park Assist Display Ground circuit.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)
No
- Go To 5
5. CHECK THE (D703) PARK ASSIST SENSOR NO. 9 SIGNAL CIRCUIT FOR A SHORT TO (Z914) PARK ASSIST MODULE GROUND CIRCUIT
Measure the resistance between the (D703) Park Assist Sensor No. 9 Signal circuit and the (Z914) Park Assist Module Ground circuit.
Is the resistance below 10K ohms?
Yes
- Repair the (D703) Park Assist Sensor No. 9 Signal circuit for a short to the (Z914) Park Assist Module Ground circuit.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)
No
- Go To 6
6. CHECK THE (D703) PARK ASSIST SENSOR NO. 9 SIGNAL CIRCUIT FOR A SHORT TO GROUND
Measure the resistance between ground and the (D703) Park Assist Sensor No. 9 Signal circuit.
Is the resistance below 10K ohms?
Yes
- Repair the (D703) Park Assist Sensor No. 9 Signal circuit for a short to ground.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)
No
- Replace the Park Assist Module in accordance with the service information.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)