P0826

DTC P0826 MANUAL MODE SWITCH CIRCUIT





Description
TCM sends the switch signals to combination meter via CAN communication line. Then manual mode switch position is indicated on the CVT position indicator. For inspection, refer to "Diagnosis Procedure".




CONSULT-III Reference Value in Data Monitor Mode









On Board Diagnosis Logic
- This is not an OBD-II self-diagnostic item.
- Diagnostic trouble code "P0826 MANUAL MODE SWITCH" with CONSULT-III is detected when TCM monitors Manual mode, Non manual mode, Up or Down switch signal, and then detects irregular with impossible input pattern for 1 second or more.




Possible Cause
- Harness or connectors
(These switches circuit is open or shorted.)
(TCM, and combination meter circuit are open or shorted.)
(CAN communication line is open or shorted.)
- Manual mode select switch.
- Manual mode position select switch.




DTC Confirmation Procedure

CAUTION:
Always drive vehicle at a safe speed.

NOTE:
If "DTC Confirmation Procedure" has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.

WITH CONSULT-III
1. Turn ignition switch ON. (Do not start engine.)
2. Select "DATA MONITOR" mode for "TRANSMISSION" with CONSULT-III.
3. Start engine.
4. Push manual mode switch"".
5. Drive vehicle for at least 2 consecutive seconds.
6. If DTC is detected, go to "Diagnosis Procedure".




Wiring Diagram - CVT - MMSW






TCM TERMINALS AND REFERENCE VALUES
Refer to TCM Input/Output Signal Reference Value.




Diagnosis Procedure
1.CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis check. Refer to CONSULT-III Function (Transmission).
Is any malfunction of the "U1000 CAN COMM CIRCUIT" indicated?
YES >> Check CAN communication line. Refer to Constant Velocity Transmission (CVT).
NO >> GO TO 2.
2.CHECK MANUAL MODE SWITCH SIGNALS
With CONSULT-III
1. Turn ignition switch ON. (Do not start engine.)
2. Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for "TRANSMISSION" with CONSULT-III.
3. Read out ON/OFF switching action of the "STRDWNSW", "STRUPSW", "NONMMODE", "MMODE".





Without CONSULT-III
Drive vehicle in the manual mode, and confirm that the actual gear position and the meter's indication of the position mutually coincide when the selector lever is shifted to the "+ (up)" or "- (down)" side (1st <=> 6th gear).
OK or NG
OK >> GO TO 7.
NG >> GO TO 3.
3.CHECK STEERING SHIFT SWITCH AND MANUAL MODE SWITCH
Check steering shift switch and manual mode switch. Refer to "Component Inspection".
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4.CHECK BETWEEN STEERING SHIFT SWITCH AND COMBINATION METER
1. Turn ignition switch OFF.
2. Disconnect spiral cable harness connector and combination meter harness connector.
3. Check continuity between spiral cable harness connector terminals and combination meter harness connector terminals.





4. If OK, check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged harness.
5.CHECK BETWEEN MANUAL MODE SWITCH AND COMBINATION METER
1. Disconnect manual mode select switch harness connector.
2. Check continuity between manual mode select switch harness connector terminals and combination meter harness connector terminals.





3. Check continuity between manual mode select switch harness connector and ground.





4. If OK, check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> Repair or replace damaged harness.
6.CHECK SPIRAL CABLE
1. Disconnect spiral cable connector.
2. Check continuity between spiral cable connector terminals.





OK or NG
OK >> GO TO 7.
NG >> Replace spiral cable. Refer to Service and Repair.
7.CHECK COMBINATION METER
Check combination meter. Refer to Self-Diagnosis Mode of Combination Meter.
OK or NG?
YES >> GO TO 8.
NO >> Replace combination meter. Refer to .
8.CHECK DTC
Perform "DTC Confirmation Procedure".
OK or NG
OK >> INSPECTION END
NG >> GO TO 9.
9.CHECK TCM
1. Check TCM input/output signals. Refer to TCM Input/Output Signal Reference Value.
2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> INSPECTION END
NG >> Repair or replace damaged parts.




Component Inspection

STEERING SHIFT SWITCH
Check continuity between spiral cable connector terminals.






MANUAL MODE SWITCH
Check continuity between manual mode select switch harness connector terminals.