DTC P0668-11 / P0668-15 / P0669-1C / P19D1-62 / P19D1-64

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
P0668-11: Control Module Internal Temperature Sensor “A” Circuit Low – Circuit Short to Ground Sensor circuit is shorted to ground. (1 D/C detection logic)	•Sensor module temperature sensor circuit •Sensor module temperature sensor (solenoid valve unit) •TCM
P0668-15: Control Module Internal Temperature Sensor “A” Circuit Low – Circuit Short to Battery or Open Sensor circuit is shorted to power supply or open. (1 D/C detection logic)
P0669-1C: Control Module Internal Temperature Sensor “A” Circuit High – Circuit Voltage Out of Range Circuit voltage is out of specified range. (1 D/C detection logic)
P19D1-62: Module Temperature Too High – Signal Compare Failure Module temperature is higher than specified value. (1 D/C detection logic)
P19D1-64: Module Temperature Too High – Signal Plausibility Failure Module temperature is higher than specified oil temperature. (1 D/C detection logic)

Circuit Diagram

[A]:	TCM connector (View: [a])	2.	Sensor module temperature sensor	7.	6th gear position sensor
[B]:	Sensor module connector (View: [a])	3.	Even gear clutch pressure sensor	8.	2nd & 4th gear position sensor
A1:	Sensor module temperature sensor signal	4.	Sensor module	9.	Even gear clutch speed sensor
A2:	Sensor module temperature sensor ground circuit	5.	1st & 3rd gear position sensor	10.	Odd gear clutch speed sensor
1.	TCM	6.	5th & reverse gear position sensor	11.	Gear select position sensor

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”.

—Even gear clutch pressure sensor (P0642-13, P0933-12, P0933-14, P0934-1C and P0935-1C)
—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)
—Gear select position sensor (P0904-11, P0904-15, P0904-1C, P0904-36, P0904-37, P0904-38 and P0909-1C)
—1st & 3rd gear position sensor (P0914-11, P0914-15, P0914-1C, P0914-36, P0914-37 and P0914-38)
—2nd & 4th gear position sensor (P0915-11, P0915-15, P0915-1C, P0915-36, P0915-37 and P0915-38)
—5th & reverse gear position sensor (P0916-11, P0916-15, P0916-1C, P0916-36, P0916-37 and P0916-38)
—6th gear position sensor (P0917-11, P0917-15, P0917-1C, P0917-36, P0917-37 and P0917-38)

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	Sensor module temperature sensor power supply circuit check 1)With ignition “OFF”, disconnect “E495” and “E496” connectors from TCM and sensor module connector. 2)Check for proper terminal connection to “E495” and “E496” connectors and sensor module connector. 3)Check for proper terminal connection to “D248” and “E581” connector. 4)If connections are OK, check the following points. •Resistance of “A1” and “A2” circuits: less than 1 Ω •Resistance between each of “A1” and “A2” circuits and ground: infinity •Resistance between “A1” circuit terminal and other terminal at sensor module connector: infinity •Resistance between “A2” circuit terminal and other terminal at sensor module connector: infinity •Voltage of “A1” and “A2” circuits: approx. 0 V (When ignition is “ON”) Is check result OK?	Replace sensor module temperature sensor (solenoid valve unit). If this DTC is detected again, replace TCM and recheck DTC.	Repair or replace defective wire harness.