1st Position Switch

1ST POSITION SWITCH


Diagnosis Procedure

1.CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis. CONSULT-III Function (Transmission).
Is any malfunction in the CAN communication indicated in the results?
YES - Check CAN communication line. TM TM TM TM TM.
NO - GO TO 2.
2.CHECK 1ST POSITION SWITCH CIRCUIT
With CONSULT-III
1. Turn ignition switch "ON".
2. Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for "TRANSMISSION" with CONSULT-III.
3. Read out "1 POSITION SW".
Check the signal of the 1st position switch is indicated properly.





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





2. Check voltage between A/T shift selector connector terminal and ground.





OK or NG
OK - GO TO 5.
NG - GO TO 3.
3.CHECK 1ST POSITION SWITCH
1. Turn ignition switch "OFF".
2. Disconnect A/T shift selector connector.





3. Check continuity between A/T shift selector connector terminals.





OK or NG
OK - GO TO 4.
NG - Repair or replace A/T shift selector assembly.
4.DETECT MALFUNCTIONING ITEM
Check the following. If any items are damaged, repair or replace damaged parts.
- Harness for short or open between combination meter connector terminal 18 and A/T shift selector connector terminal 9.
- Harness for short or open between A/T shift selector connector terminal 10 and ground.
OK or NG
OK - GO TO 5.
NG - Repair or replace damaged parts.
5.CHECK COMBINATION METER
Check the combination meter. Diagnosis Description.
OK or NG
OK - INSPECTION END
NO - Repair or replace damaged parts.