P1701

P1701 TCM





Description
When the power supply to the TCM is cut off, for example because the battery is removed, and the self-diagnosis memory function stops, a malfunction is detected.

NOTE:
Since "P1701" is indicated when replacing TCM, perform diagnosis after erasing "Self Diagnostic Results".




DTC Logic

DTC DETECTION LOGIC






DTC CONFIRMATION PROCEDURE

NOTE:
Immediately after performing any "DTC CONFIRMATION PROCEDURE", 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. Wait for at least 2 consecutive seconds.
3. Perform "Self Diagnostic Results" in "TRANSMISSION".
Is "P1701" detected?
YES - Go to P1701.
NO - Check intermittent incident. Intermittent Incident.




Diagnosis Procedure
Regarding Wiring Diagram information, [1][2]Electrical Diagrams.
1.CHECK TCM POWER SOURCE





1. Turn ignition switch OFF.
2. Disconnect TCM connector.
3. Check voltage between TCM vehicle side harness connector terminals.





Is the inspection result normal?
YES - GO TO 6.
NO - GO TO 2.
2.CHECK TCM GROUND CIRCUIT





1. Turn ignition switch OFF.
2. Check continuity between TCM vehicle side harness connector terminals and ground.





Is the inspection result normal?
YES - GO TO 3.
NO - Repair or replace damaged parts.
3.CHECK TCM POWER CIRCUIT





Check voltage between TCM vehicle side harness connector terminals and ground.






Is the inspection result normal?
YES - GO TO 6.
NO - GO TO 4.
4.CHECK HARNESS BETWEEN TCM AND IPDM E/R AND BETWEEN TCM AND BATTERY (PART 1)





1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between TCM vehicle side harness connector terminals and IPDM E/R vehicle side harness connector terminal.










4. Disconnect fuse block (J/B) connector.
5. Check continuity between TCM vehicle side harness connector terminals and fuse block (J/B) vehicle side harness connector terminal.





Is the inspection result normal?
YES - GO TO 5.
NO - Repair or replace damaged parts.
5.CHECK HARNESS BETWEEN TCM AND IPDM E/R AND BETWEEN TCM AND BATTERY (PART 2)





Check continuity between TCM vehicle side harness connector terminals and ground.





Is the inspection result normal?
YES - Check the following. If NG, repair or replace damaged parts.
- 10A fuse (No. 34, located in IPDM E/R)
- 10A fuse [No. 11, located in fuse block (J/B)]
- Ignition switch. Battery Power Supply.
NO - Repair or replace damaged parts.
6.DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES - Replace TCM. Exploded View.
NO - Repair or replace damaged parts.