Pinpoint Test L: Linear Park Position Sensor
- Normal Operation and Fault Conditions
The park pawl motor moves a park pawl rod when energized, moving the park pawl out of the Park position. When the park pawl is in the out of park position, the park pawl motor turns off and a hold out of park (HOOP) solenoid energizes and holds the park pawl out of Park. When power is turned off to the HOOP solenoid a spring returns the park pawl to the Park position. The park pawl actuator uses dual PWM output (at 1000 Hz) park pawl position sensors where sensor A increases as the park pawl moves out of Park and sensor B decreases. Together the sum of the two PWM signal duty cycles should add up to approximately 100%. A rotary sensor measures the position of a cam actuator that moves the linear park pawl rod and determines whether the park pawl actuator is in the "Stay out of Park" mode.
DTC Fault Trigger Conditions
DTC Description Fault Trigger Condition SOBDMC P07B5:00 Transmission Park Position Sensor/Switch 'A' Circuit Performance/Low: No Sub Type Information This DTC indicates linear position sensor "A" duty cycle or frequency is out of range. SOBDMC P07B6:00 Transmission Park Position Sensor/Switch 'A' Circuit Performance High: No Sub Type Information This DTC indicates the two linear position sensors do not correlate with each other. SOBDMC P07BB:00 Transmission Park Position Sensor/Switch 'B' Circuit Performance/Low: No Sub Type Information This DTC indicates the linear position sensor "B" duty cycle or frequency is out of range. SOBDMC P07BE:00 Transmission Park Position Sensor/Switch 'A' / 'B' Correlation: No Sub Type Information This DTC indicates the two linear position sensors do not correlate with the rotary position sensor. SOBDMC P26C3:00 Internal Control Module Transmission Range Sensor Performance: No Sub Type Information This DTC indicates the two linear position sensors are out of range or the sensors do not correlate. Possible Sources
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- Circuit open or shorted
- Rear electric drive assembly internal wiring harness
- Park lock actuator
- SOBDMC
- L1 RETRIEVE AND RECORD ALL DTCS
-
NOTE: If any communication diagnostic trouble codes (DTCs) between the GSM and the SOBDMC are present, resolve those first.NOTE: If there are any ePark related diagnostic trouble codes (DTCs) in the BCMC, diagnose those first.
Using the diagnostic scan tool, retrieve all diagnostic trouble codes (DTCs).
Are diagnostic trouble codes (DTCs) P07B5, P07B6, P07BB, P07BE and/or P26C3 present?
Yes GO to L2 No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or terminal issues. -
- L2 CHECK THE PARK POSITION SENSOR VREF CIRCUIT FOR VOLTAGE
- Ignition OFF.
- Disconnect Rear electric drive assembly C400.
- Inspect the connector for damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals.
- Ignition ON.
Is the voltage between 4.8 and 5.2 volts?
Yes GO to L8 No If the voltage is less than 4.8 volts, GO to L3If the voltage is greater than 5.2 volts, GO to L6 - L3 CHECK THE PARK POSITION SENSOR VREF CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect SOBDMC C3471D.
- Inspect the connector for damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals.
Is the resistance less than 3 ohms?
Yes GO to L4 No REPAIR the open circuit. - L4 CHECK THE PARK POSITION SENSOR VREF CIRCUIT FOR A SHORT TO GROUND
Is the resistance greater than 10, 000 ohms?
Yes GO to L5 No REPAIR the short to ground. - L5 RECHECK THE PARK POSITION SENSOR VREF CIRCUIT FOR VOLTAGE
- Connect SOBDMC C3471D.
- Ignition ON.
Is the voltage between 4.8 and 5.2 volts?
Yes The cause is likely a connector issue. ADDRESS any loose or corroded terminals or pins. No INSTALL a new SOBDMC. REFER to: Inverter System Controller [SOBDMC] . - L6 CHECK THE PARK POSITION SENSOR VREF CIRCUIT FOR A SHORT TOGETHER WITH THE POWER CIRCUITS
- Measure:
Positive Lead Measurement / Action Negative Lead C400 Pin 29 C400 Pin 1 C400 Pin 29 C400 Pin 7 C400 Pin 29 C400 Pin 8 C400 Pin 29 C400 Pin 11 C400 Pin 29 C400 Pin 14 C400 Pin 29 C400 Pin 15 C400 Pin 29 C400 Pin 18 C400 Pin 29 C400 Pin 28 C400 Pin 29 C400 Pin 29 C400 Pin 29 C400 Pin 30 C400 Pin 29 C400 Pin 34 C400 Pin 29 C400 Pin 35 C400 Pin 29 C400 Pin 38 C400 Pin 29 C400 Pin 39 C400 Pin 29 C400 Pin 40
Are the resistances all greater than 10, 000 ohms?
Yes GO to L7 No REPAIR the shorted circuits. - Measure:
- L7 CHECK FOR WATER INTRUSION IN THE HARNESS CONNECTORS
- Check for evidence of water in the connectors.
Is any evidence of water in the connectors present?
Yes REPAIR as necessary. No INSTALL a new SOBDMC. REFER to: Inverter System Controller [SOBDMC] . - L8 CHECK THE PARK POSITION SIGNAL CIRCUITS FOR AN OPEN
- Ignition OFF.
- Disconnect SOBDMC C3471D.
- Inspect the connector for damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals.
- For park position sensor "A" Measure:
Positive Lead Measurement / Action Negative Lead C400 Pin 38 C3471D Pin 6
- For park position sensor "B" Measure:
Positive Lead Measurement / Action Negative Lead C400 Pin 18 C3471D Pin 17
Are the resistances less than 3 ohms?
Yes GO to L9 No REPAIR the open circuit. - L9 CHECK THE PARK POSITION SIGNAL CIRCUITS FOR A SHORT TO GROUND
- For park position sensor "A" measure:
Positive Lead Measurement / Action Negative Lead C400 Pin 38 Ground
- For park position sensor "B" measure:
Positive Lead Measurement / Action Negative Lead C400 Pin 18 Ground
Are the resistances greater than 10, 000 ohms?
Yes GO to L10 No REPAIR the short to ground. - For park position sensor "A" measure:
- L10 CHECK THE PARK POSITION SIGNAL CIRCUITS FOR A SHORT TOGETHER WITH THE POWER CIRCUITS
- For park position sensor "A", measure:
Positive Lead Measurement / Action Negative Lead C400 Pin 38 C400 Pin 1 C400 Pin 38 C400 Pin 7 C400 Pin 38 C400 Pin 8 C400 Pin 38 C400 Pin 11 C400 Pin 38 C400 Pin 14 C400 Pin 38 C400 Pin 15 C400 Pin 38 C400 Pin 18 C400 Pin 38 C400 Pin 28 C400 Pin 38 C400 Pin 29 C400 Pin 38 C400 Pin 30 C400 Pin 38 C400 Pin 34 C400 Pin 38 C400 Pin 35 C400 Pin 38 C400 Pin 39 C400 Pin 38 C400 Pin 40
- For park position sensor "B", measure:
Positive Lead Measurement / Action Negative Lead C400 Pin 18 C400 Pin 1 C400 Pin 18 C400 Pin 7 C400 Pin 18 C400 Pin 8 C400 Pin 18 C400 Pin 11 C400 Pin 18 C400 Pin 14 C400 Pin 18 C400 Pin 15 C400 Pin 18 C400 Pin 28 C400 Pin 18 C400 Pin 29 C400 Pin 18 C400 Pin 30 C400 Pin 18 C400 Pin 34 C400 Pin 18 C400 Pin 35 C400 Pin 18 C400 Pin 38 C400 Pin 18 C400 Pin 39 C400 Pin 18 C400 Pin 40
Are the resistances all greater than 10, 000 ohms?
Yes GO to L11 No REPAIR the shorted circuits. - For park position sensor "A", measure:
- L11 CHECK THE TRANSMISSION PARK POSITION SENSOR GROUND CIRCUIT FOR AN OPEN
Is the resistance less than 3 ohms?
Yes GO to L12 No REPAIR the open circuit. - L12 CHECK THE REAR ELECTRIC DRIVE ASSEMBLY INTERNAL WIRING HARNESS PARK POSITION SENSOR VREF CIRCUIT FOR AN OPEN
- Remove the transmission case end cover. REFER to: Park Lock Actuator .
- Disconnect Park lock actuator C4015.
- Measure:
Positive Lead Measurement / Action Negative Lead
C400 Rear electric drive assembly connector, component side pin 29C4015 Pin 1
Is the resistance less than 3 ohms?
Yes GO to L13 No INSTALL a new rear electric drive assembly. REFER to: Rear Electric Drive Assembly . - L13 CHECK THE REAR ELECTRIC DRIVE ASSEMBLY INTERNAL WIRING HARNESS PARK POSITION SENSOR VREF CIRCUIT FOR A SHORT TO GROUND
- Measure:
Positive Lead Measurement / Action Negative Lead
C400 Rear electric drive assembly connector, component side pin 29Ground
Is the resistance greater than 10, 000 ohms?
Yes GO to L14 No INSTALL a new rear electric drive assembly. REFER to: Rear Electric Drive Assembly . - Measure:
- L14 CHECK THE REAR ELECTRIC DRIVE ASSEMBLY INTERNAL WIRING HARNESS PARK POSITION SENSOR VREF CIRCUIT FOR A SHORT TOGETHER WITH THE POWER CIRCUITS
- Measure:
Positive Lead Measurement / Action Negative Lead C400 Rear electric drive assembly connector, component side pin 29 C400 Rear electric drive assembly connector, component side pin 1 C400 Rear electric drive assembly connector, component side pin 29 C400 Rear electric drive assembly connector, component side pin 7 C400 Rear electric drive assembly connector, component side pin 29 C400 Rear electric drive assembly connector, component side pin 8 C400 Rear electric drive assembly connector, component side pin 29 C400 Rear electric drive assembly connector, component side pin 11 C400 Rear electric drive assembly connector, component side pin 29 C400 Rear electric drive assembly connector, component side pin 14 C400 Rear electric drive assembly connector, component side pin 29 C400 Rear electric drive assembly connector, component side pin 15 C400 Rear electric drive assembly connector, component side pin 29 C400 Rear electric drive assembly connector, component side pin 18 C400 Rear electric drive assembly connector, component side pin 29 C400 Rear electric drive assembly connector, component side pin 28 C400 Rear electric drive assembly connector, component side pin 29 C400 Rear electric drive assembly connector, component side pin 30 C400 Rear electric drive assembly connector, component side pin 29 C400 Rear electric drive assembly connector, component side pin 34 C400 Rear electric drive assembly connector, component side pin 29 C400 Rear electric drive assembly connector, component side pin 35 C400 Rear electric drive assembly connector, component side pin 29 C400 Rear electric drive assembly connector, component side pin 38 C400 Rear electric drive assembly connector, component side pin 29 C400 Rear electric drive assembly connector, component side pin 39 C400 Rear electric drive assembly connector, component side pin 29 C400 Rear electric drive assembly connector, component side pin 40
Are the resistances all greater than 10, 000 ohms?
Yes GO to L15 No INSTALL a new rear electric drive assembly. REFER to: Rear Electric Drive Assembly . - Measure:
- L15 CHECK THE REAR ELECTRIC DRIVE ASSEMBLY INTERNAL WIRING HARNESS PARK POSITION SENSOR SIGNAL CIRCUITS FOR AN OPEN
- Measure:
Positive Lead Measurement / Action Negative Lead
C400 Rear electric drive assembly connector, component side pin 38C4015 Pin 8
C400 Rear electric drive assembly connector, component side pin 18C4015 Pin 3
Are the resistances less than 3 ohms?
Yes GO to L16 No INSTALL a new rear electric drive assembly. REFER to: Rear Electric Drive Assembly . - Measure:
- L16 CHECK THE REAR ELECTRIC DRIVE ASSEMBLY INTERNAL WIRING HARNESS PARK POSITION SENSOR SIGNAL CIRCUITS FOR A SHORT TO GROUND
- Measure:
Positive Lead Measurement / Action Negative Lead
C400 Rear electric drive assembly connector, component side pin 38Ground
C400 Rear electric drive assembly connector, component side pin 18Ground
Are the resistances greater than 10, 000 ohms?
Yes GO to L17 No INSTALL a new rear electric drive assembly. REFER to: Rear Electric Drive Assembly . - Measure:
- L17 CHECK THE REAR ELECTRIC DRIVE ASSEMBLY INTERNAL WIRING HARNESS PARK POSITION SENSOR SIGNAL CIRCUITS FOR A SHORT TOGETHER WITH THE POWER CIRCUITS
- For park position sensor A, measure:
Positive Lead Measurement / Action Negative Lead C400 Rear electric drive assembly connector, component side pin 38 C400 Rear electric drive assembly connector, component side pin 1 C400 Rear electric drive assembly connector, component side pin 38 C400 Rear electric drive assembly connector, component side pin 7 C400 Rear electric drive assembly connector, component side pin 38 C400 Rear electric drive assembly connector, component side pin 8 C400 Rear electric drive assembly connector, component side pin 38 C400 Rear electric drive assembly connector, component side pin 11 C400 Rear electric drive assembly connector, component side pin 38 C400 Rear electric drive assembly connector, component side pin 14 C400 Rear electric drive assembly connector, component side pin 38 C400 Rear electric drive assembly connector, component side pin 15 C400 Rear electric drive assembly connector, component side pin 38 C400 Rear electric drive assembly connector, component side pin 18 C400 Rear electric drive assembly connector, component side pin 38 C400 Rear electric drive assembly connector, component side pin 28 C400 Rear electric drive assembly connector, component side pin 38 C400 Rear electric drive assembly connector, component side pin 29 C400 Rear electric drive assembly connector, component side pin 38 C400 Rear electric drive assembly connector, component side pin 30 C400 Rear electric drive assembly connector, component side pin 38 C400 Rear electric drive assembly connector, component side pin 34 C400 Rear electric drive assembly connector, component side pin 38 C400 Rear electric drive assembly connector, component side pin 35 C400 Rear electric drive assembly connector, component side pin 38 C400 Rear electric drive assembly connector, component side pin 39 C400 Rear electric drive assembly connector, component side pin 38 C400 Rear electric drive assembly connector, component side pin 40
- For park position sensor B, measure:
Positive Lead Measurement / Action Negative Lead C400 Rear electric drive assembly connector, component side pin 18 C400 Rear electric drive assembly connector, component side pin 1 C400 Rear electric drive assembly connector, component side pin 18 C400 Rear electric drive assembly connector, component side pin 7 C400 Rear electric drive assembly connector, component side pin 18 C400 Rear electric drive assembly connector, component side pin 8 C400 Rear electric drive assembly connector, component side pin 18 C400 Rear electric drive assembly connector, component side pin 11 C400 Rear electric drive assembly connector, component side pin 18 C400 Rear electric drive assembly connector, component side pin 14 C400 Rear electric drive assembly connector, component side pin 18 C400 Rear electric drive assembly connector, component side pin 15 C400 Rear electric drive assembly connector, component side pin 18 C400 Rear electric drive assembly connector, component side pin 28 C400 Rear electric drive assembly connector, component side pin 18 C400 Rear electric drive assembly connector, component side pin 29 C400 Rear electric drive assembly connector, component side pin 18 C400 Rear electric drive assembly connector, component side pin 30 C400 Rear electric drive assembly connector, component side pin 18 C400 Rear electric drive assembly connector, component side pin 34 C400 Rear electric drive assembly connector, component side pin 18 C400 Rear electric drive assembly connector, component side pin 35 C400 Rear electric drive assembly connector, component side pin 18 C400 Rear electric drive assembly connector, component side pin 38 C400 Rear electric drive assembly connector, component side pin 18 C400 Rear electric drive assembly connector, component side pin 39 C400 Rear electric drive assembly connector, component side pin 18 C400 Rear electric drive assembly connector, component side pin 40
Are the resistances all greater than 10, 000 ohms?
Yes GO to L18 No INSTALL a new rear electric drive assembly. REFER to: Rear Electric Drive Assembly . - For park position sensor A, measure:
- L18 CHECK THE REAR ELECTRIC DRIVE ASSEMBLY INTERNAL WIRING HARNESS PARK POSITION SENSOR GROUND CIRCUIT FOR AN OPEN
- Measure:
Positive Lead Measurement / Action Negative Lead
C400 Rear electric drive assembly connector, component side pin 9C4015 Pin 6
Is the resistance less than 3 ohms?
Yes GO to L19 No INSTALL a new rear electric drive assembly. REFER to: Rear Electric Drive Assembly . - Measure:
- L19 CHECK THE REAR ELECTRIC DRIVE ASSEMBLY INTERNAL WIRING HARNESS PARK POSITION SENSOR GROUND CIRCUIT FOR A SHORT TO GROUND
- Measure:
Positive Lead Measurement / Action Negative Lead
C400 Rear electric drive assembly connector, component side pin 9Ground
Is the resistance greater than 10, 000 ohms?
Yes GO to L20 No INSTALL a new rear electric drive assembly. REFER to: Rear Electric Drive Assembly . - Measure:
- L20 CHECK THE REAR ELECTRIC DRIVE ASSEMBLY INTERNAL WIRING HARNESS PARK POSITION SENSOR GROUND CIRCUIT FOR A SHORT TOGETHER WITH THE POWER CIRCUITS
- Measure:
Positive Lead Measurement / Action Negative Lead C400 Rear electric drive assembly connector, component side pin 9 C400 Rear electric drive assembly connector, component side pin 1 C400 Rear electric drive assembly connector, component side pin 9 C400 Rear electric drive assembly connector, component side pin 7 C400 Rear electric drive assembly connector, component side pin 9 C400 Rear electric drive assembly connector, component side pin 8 C400 Rear electric drive assembly connector, component side pin 9 C400 Rear electric drive assembly connector, component side pin 11 C400 Rear electric drive assembly connector, component side pin 9 C400 Rear electric drive assembly connector, component side pin 14 C400 Rear electric drive assembly connector, component side pin 9 C400 Rear electric drive assembly connector, component side pin 15 C400 Rear electric drive assembly connector, component side pin 9 C400 Rear electric drive assembly connector, component side pin 18 C400 Rear electric drive assembly connector, component side pin 9 C400 Rear electric drive assembly connector, component side pin 28 C400 Rear electric drive assembly connector, component side pin 9 C400 Rear electric drive assembly connector, component side pin 29 C400 Rear electric drive assembly connector, component side pin 9 C400 Rear electric drive assembly connector, component side pin 30 C400 Rear electric drive assembly connector, component side pin 9 C400 Rear electric drive assembly connector, component side pin 34 C400 Rear electric drive assembly connector, component side pin 9 C400 Rear electric drive assembly connector, component side pin 35 C400 Rear electric drive assembly connector, component side pin 9 C400 Rear electric drive assembly connector, component side pin 38 C400 Rear electric drive assembly connector, component side pin 9 C400 Rear electric drive assembly connector, component side pin 39 C400 Rear electric drive assembly connector, component side pin 9 C400 Rear electric drive assembly connector, component side pin 40
Are the resistances all greater than 10, 000 ohms?
Yes INSTALL a new park lock actuator. REFER to: Park Lock Actuator . No INSTALL a new rear electric drive assembly. REFER to: Rear Electric Drive Assembly . - Measure: