DTC P19A7-1C / P19A8-1C / P19A9-1C

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
P19A7-1C: Sensor Supply Voltage “A” – Circuit Voltage Out of Range Circuit voltage is out of specified range. (1 D/C detection logic)	•Sensor power supply circuit •TCM
P19A8-1C: Sensor Supply Voltage “B” – Circuit Voltage Out of Range Circuit voltage is out of specified range. (1 D/C detection logic)
P19A9-1C: Sensor Supply Voltage “C” – Circuit Voltage Out of Range Circuit voltage is out of specified range. (1 D/C detection logic)

Circuit Diagram

[A]:	TCM connector (View: [a])	3.	Line pressure sensor	9.	2nd & 4th gear position sensor
A1:	Sensor power supply circuit 1	4.	Even gear clutch pressure sensor	10.	Even gear clutch speed sensor
A2:	Sensor power supply circuit 2	5.	Sensor module	11.	Odd gear clutch speed sensor
A1:	Sensor power supply circuit 3	6.	1st & 3rd gear position sensor	12.	Gear select position sensor
1.	TCM	7.	5th & reverse gear position sensor	13.	Odd gear clutch position sensor
2.	Parking position sensor	8.	6th gear 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 DTC is 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)
—Parking position sensor (P081C-11, P081C-15, P081C-36, P081C-37, P081C-38 and P19B7-68)
—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)
—Line pressure sensor (P0932-12 and P0932-14)

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 power supply 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 “A1”, “A2” and “A3” circuits and ground: infinity •Resistance between each of “A1”, “A2” and “A3” circuits terminal and other terminal at “E496” connector: infinity •Resistance between each of “A1”, “A2” and “A3” circuits terminal and other terminal at “E496” connector: infinity •Voltage of each of “A1”, “A2” and “A3” circuits: approx. 0 V (When ignition is “ON”) Is check result OK?	Replace TCM and recheck DTC.	Repair or replace defective wire harness.