CVT RE0F10A

P0840 TRANSMISSION FLUID PRESSURE SEN/SW A





Description
The secondary pressure sensor detects secondary pressure of CVT and sends TCM the signal.




DTC Logic

DTC DETECTION LOGIC






DTC CONFIRMATION PROCEDURE

NOTE:
If "DTC CONFIRMATION PROCEDURE" has been previously performed, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.
1.CHECK DTC DETECTION
With CONSULT-III
1. Turn ignition switch ON.
2. Select "DATA MONITOR".
3. Make sure that output voltage of CVT fluid temperature sensor is within the range below.





4. Start engine and wait for at least 5 consecutive seconds.
With GST
Follow the procedure "With CONSULT-III".
Is "P0840" detected?
YES - Go to CVT RE0F10A.
NO - Check intermittent incident. Refer to Intermittent Incident.




Diagnosis Procedure
1.CHECK INPUT SIGNAL





1. Start engine.
2. Check voltage between TCM harness connector F16 terminal
15 and ground.





3. Turn ignition switch OFF.
Is the inspection result normal?
YES - GO TO 8.
NO - GO TO 2.
2.CHECK POWER AND SENSOR GROUND





1. Turn ignition switch ON.
2. Check voltage between TCM harness connector F16 terminals
25 and 26.





Is the inspection result normal?
YES - GO TO 3.
NO - GO TO 5.
3.CHECK HARNESS BETWEEN TCM AND CVT UNIT (SECONDARY PRESSURE SENSOR) (PART 1)





1. Turn ignition switch OFF.
2. Disconnect TCM harness connector and CVT unit connector .
3. Check continuity between TCM harness connector F16 (A) terminal 15 and CVT unit harness connector F46 (B) terminal 23.





Is the inspection result normal?
YES - GO TO 4.
NO - Repair or replace damaged parts.
4.CHECK HARNESS BETWEEN TCM AND CVT UNIT (SECONDARY PRESSURE SENSOR) (PART 2)





Check continuity between TCM harness connector F16 terminal 15 and ground.





Is the inspection result normal?
YES - GO TO 7.
NO - Repair or replace damaged parts.
5. CHECK HARNESS BETWEEN TCM AND CVT UNIT (SENSOR POWER AND SENSOR GROUND) (PART 1)





1. Turn ignition switch OFF.
2. Disconnect TCM connector and CVT unit connector.
3. Check continuity between TCM harness connector F16 (A) terminals 25, 26 and CVT unit harness connector F46 (B) terminals
19, 20.





Is the inspection result normal?
YES - GO TO 6.
NO - Repair or replace damaged parts.
6.CHECK HARNESS BETWEEN TCM AND CVT UNIT (SENSOR POWER AND SENSOR GROUND) (PART
2)





Check continuity between TCM harness connector F16 terminals 25, 26 and ground.





Is the inspection result normal?
YES - GO TO 7.
NO - Repair or replace damaged parts.
7.CHECK TCM
1. Replace same type TCM. Refer to Removal And Installation.
2. Connect each connector.
3. Perform "DTC CONFIRMATION PROCEDURE". Refer to CVT RE0F10A.
Is "P0840" detected?
YES (Only DTC P0840 detected)-Replace control valve. Refer to Exploded View.
YES (DTC P0840 and except DTC P0840 are detected)-Replace transaxle assembly. Refer to Removal And Installation.
NO - Replace TCM. Refer to Removal And Installation.
8.DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES - Replace TCM. Refer to Removal And Installation.
NO - Repair or replace damaged parts.