5AT RE5R05A

P1815 M-MODE SWITCH





Description
Manual mode switch is installed in A/T shift selector. 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. For inspection, refer to Description Consult-III Reference Value In Data Monitor Mode 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 "P1815" with CONSULT-III is detected when TCM monitors Manual mode, Non manual mode, Up or Down switch signal, and detects as irregular when impossible input pattern occurs 1 second or more.




Possible Cause
- Harness or connectors
(These switches circuit is open or shorted.)
- Manual mode select switch (Into A/T shift selector)
- Manual mode position select switch (Into A/T shift selector)




DTC Confirmation Procedure

CAUTION:
Always drive vehicle at a safe speed.

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-III
1. Start the engine.
2. Select "DATA MONITOR" in "TRANSMISSION".
3. Move selector lever to "M" position.
4. Drive vehicle and maintain the following conditions for at least 2 consecutive seconds.

MANU MODE SW : ON

5. If DTC is detected, go to 5AT RE5R05A.




Wiring Diagram - AT - MMSW









Diagnosis Procedure
1.CHECK CAN COMMUNICATION LINE
With CONSULT-III
- Select "SELF-DIAG RESULTS" in "TRANSMISSION".
Without CONSULT-III
- Perform the self-diagnosis. Refer to Reading and Clearing Diagnostic Trouble Codes.
Is a malfunction in the CAN communication indicated in the results?
YES - Check CAN communication line. Refer to 5AT RE5R05A 5AT RE5R05A 5AT RE5R05A 5AT RE5R05A.
NO - GO TO 2.
2.CHECK MANUAL MODE SWITCH CIRCUIT
With CONSULT-III
1. Turn ignition switch ON.
2. Select "DATA MONITOR" in "TRANSMISSION".
3. Read out ON/OFF switching action of "MANU MODE SW", "NON M-MODE SW", "UP SW LEVER", "DOWN SW LEVER". Refer to 5AT RE5R05A.
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 (1GR ⇔ 5GR).
OK or NG
OK - GO TO 4.
NG - GO TO 3.
3.DETECT MALFUNCTIONING ITEM
Check the following.
- Manual mode switch. Refer to 5AT RE5R05A.
- Pin terminals for damage or loose connection with harness connector.
- Open circuit or short to ground or short to power in harness or connector for A/T shift selector (manual mode switch).
- Harness for short or open between unified meter and A/C amp. and A/T shift selector.
- Unified meter and A/C amp. Refer to System Description.
OK or NG
OK - GO TO 4.
NG - Repair or replace damaged parts.
4.CHECK DTC
Perform 5AT RE5R05A.
OK or NG
OK INSPECTION END
NG - GO TO 5.
5.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to Main Power Supply and Ground Circuit.
OK or NG
OK - GO TO 6.
NG - Repair or replace damaged parts.
6.DETECT MALFUNCTIONING ITEM
Check A/T assembly harness connector pin terminals for damage or loose connection with harness connector.
OK or NG
OK - Replace the control valve with TCM. Refer to Service and Repair.
NG - Repair or replace damaged parts.




Component Inspection

MANUAL MODE SWITCH
Check continuity between A/T shift selector connector terminals.