DTC P081C-11 / P081C-15 / P081C-36 / P081C-37 / P081C-38 / P19B7-68

Precautions: Precautions for Diagnosing Trouble · Precautions for Disassembly and Reassembly · Precautions for Transmission / Transaxle · General safety (00)

DTC Detecting Condition and Trouble Area

DTC detecting condition	Trouble area
P081C-11: Park Input – Circuit Short to Ground Circuit is shorted to ground. (1 D/C detection logic but transmission warning light does not light up)	•Parking position sensor signal circuit •Parking position sensor (solenoid valve unit) •TCM
P081C-15: Park Input – Circuit Short to Battery or Open Circuit is shorted to power supply or open. (1 D/C detection logic but transmission warning light does not light up)
P081C-36: Park Input – Signal Frequency Too Low Signal frequency is too low. (1 D/C detection logic but transmission warning light does not light up)
P081C-37: Park Input – Signal Frequency Too High Signal frequency is too high. (1 D/C detection logic but transmission warning light does not light up)
P081C-38: Park Input – Signal Frequency Incorrect Invalid signal frequency is received from parking position sensor. (1 D/C detection logic but transmission warning light does not light up)
P19B7-68: Parking Mechanical Out of Range – Event Information Parking position sensor value is out of specified range. (1 D/C detection logic but transmission warning light does not light up)

Circuit Diagram

[A]:	TCM connector (View: [a])	1.	TCM	5.	Even gear clutch speed sensor
A1:	Parking position sensor power supply circuit	2.	Parking position sensor	6.	Odd gear clutch speed sensor
A2:	Parking position sensor signal circuit	3.	Line pressure sensor	7.	Odd gear clutch position sensor
A3:	Parking position sensor ground circuit	4.	Sensor module

DTC Confirmation Procedure

WARNING:

If you do not select a suitable route and take proper precautions when performing a road test, an accident can occur.

•Select a level road with no traffic to minimize the risk of accident.
•Perform the test extremely carefully.
•Perform the road test with 2 persons, a driver and a tester.

NOTE:

•Check that the following condition is satisfied in this procedure.

—11 V < Battery voltage < 15 V

•Check that the following DTCs are not detected in this “DTC Confirmation Procedure”.

—Odd gear clutch position sensor (P0641-13, P0805-11, P0805-15, P0805-36, P0805-37 and P0805-38)
—Odd gear clutch speed sensor (P0715-31, P0715-61, P0715-62 and P0715-64)
—Even gear clutch speed sensor (P0716-31, P0716-61, P0716-62 and P0716-64)
—Line pressure sensor (P0932-12 and P0932-14)
—Sensor supply voltage (P19A9-1C)

1)Start engine and drive vehicle.

DTC Troubleshooting

Step	Action	Yes	No
1	Was “Twin Clutch System Check” performed?	Go to Step 2.	Go to Twin Clutch System Check.
2	Parking position sensor power supply circuit check 1)With ignition “OFF”, disconnect parking position sensor connector. 2)Check for proper terminal connection to parking position sensor connector. 3)If connection is OK, set ignition “ON”. 4)Check that voltage between “A1” and ground is approx. 5 V. Is check result OK?	Go to step 3.	Repair “A1” circuit.
3	Parking position sensor signal circuit and ground circuit check 1)With ignition “OFF”, disconnect “E495” and “E496” connectors from TCM. 2)Check for proper terminal connection to “E495” and “E496” connectors. 3)If connections are OK, check the following points. •Resistance of “A2” and “A3” circuits: less than 1 Ω •Resistance between each of “A2” and “A3” circuits and ground: infinity •Resistance between “A2” circuit terminal and other terminal at parking position sensor connector: infinity •Resistance between “A3” circuit terminal and other terminal at parking position sensor connector: infinity •Voltage of “A2” and “A3” circuits: approx.0 V (When ignition is “ON”) Is check result OK?	Replace parking position sensor (solenoid valve unit). If this DTC is detected again, replace TCM and recheck DTC.	Repair or replace defective wire harness.