P0826

DTC P0826 MANUAL MODE SWITCH CIRCUIT

Description
Manual mode switch is installed in A/T device. It sends manual mode switch, shift up and shift down switch signals to TCM.

TCM sends the switch signals to unified meter and A/C amp. by CAN communication line. Then manual mode switch position is indicated on the A/T indicator.

CONSULT-II Reference Value in Data Monitor Mode:

On Board Diagnosis Logic
- This is not an OBD-II self-diagnostic item.
- Diagnostic trouble code MANUAL MODE SWITCH with CONSULT-II is detected when TCM monitors manual mode, non manual mode, up or down switch signals, and judges as irregular when impossible input pattern occurs.

Possible Cause
- Harness or connectors
(These switches circuit is open or shorted.)
- Manual mode switch (built into A/T device)

DTC Confirmation Procedure

NOTE: If DTC Confirmation Procedure has been previously performed, always turn ignition switch OFF and wait at least 10 seconds before performing the next test.

After the repair, perform the following procedure to confirm the malfunction is eliminated.

WITH CONSULT-II





1. Turn ignition switch ON. (Do not start engine.)
2. Select "A/T" with "DATA MONITOR" mode in CONSULT-II.
3. Move selector lever to M position (manual shift gate position).
4. Shift selector lever into + side and - side.
5. Wait for at least 30 consecutive seconds.
6. If DTC is detected, go to "Diagnostic Procedure" below.

Wiring Diagram - AT - MMSW

AT-MMSW-01:

Diagnostic Procedure
1. CHECK MANUAL MODE SWITCH CIRCUIT

With CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select "A/T" with "DATA MONITOR" mode in CONSULT-II.





3. Read out ON/OFF switching action of the "MANU MODE SW", "NON M-MODE SW", "UP SW", "DOWN SW".

Without CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)





2. Check voltage between the TCM connector terminals and ground.





OK or NG
OK >> GO TO 4.
NG >> GO TO 2.
2. CHECK HARNESS BETWEEN TCM AND A/T DEVICE (MANUAL MODE SWITCH)
1. Turn ignition switch OFF.
2. Disconnect the TCM connector.





3. Check the continuity between TCM connector terminals 5, 6, 16, 19 and ground.





4. If OK, check harness for short-circuit to ground or power source.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3. DETECT MALFUNCTIONING ITEM
Check the following.
- Open or short-circuit in the harness between TCM and A/T device (manual mode switch).
- Open or short-circuit in the harness for ground of manual mode switch.
- Manual mode switch.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4. CHECK DTC
Perform DTC Confirmation Procedure. Refer to "DTC Confirmation Procedure".
OK or NG
OK >> INSPECTION END
NG >> GO TO 5.
5. CHECK TCM
1. Check TCM input/output signal.
2. If NG, recheck 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
MANUAL MODE SWITCH





Check continuity between terminals.






Position Indicator

DIAGNOSTIC PROCEDURE
1. CHECK INPUT SIGNALS (WITH CONSULT-II

With CONSULT-II
1. Start engine.





2. Select "A/T" with "DATA MONITOR" mode in CONSULT-II and read out the value of "MANU GR POSI".
3. Drive vehicle in the manual mode, and make sure 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 <-> 5th gear).
OK or NG
OK >> INSPECTION END
NG >> GO TO 2.
2. CHECK DTC WITH TCM
Perform self-diagnosis of TCM. Refer to "SELF-DIAG RESULT MODE". Self-Diagnostic Result Mode
OK or NG
OK >> Check combination meter.
NG >> Check the malfunctioning system.