Diagnosis Procedure

SNOW MODE SWITCH


Diagnosis Procedure

1.CHECK SNOW MODE SWITCH OVERALL FUNCTION-I
1. Turn ignition switch ON.
2. Select "SNOW MODE SW" in "DATA MONITOR" mode with CONSULT-III.
3. Check "SNOW MODE SW" indication under the following conditions.





OK or NG
OK - GO TO 2.
NG - GO TO 3.
2.CHECK SNOW MODE SWITCH OVERALL FUNCTION-II
1. Turn ignition switch ON.
2. Start engine.
3. Check the snow mode indicator in the snow mode switch under the following condition.





OK or NG
OK - INSPECTION END
NG - GO TO 7.
3.CHECK DTC WITH "UNIFIED METER AND A/C AMP."
.
OK or NG
OK - GO TO 4.
NG - Follow the instructions of .
4.CHECK SNOW MODE SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect snow mode switch harness connector.










3. Turn ignition switch ON.





4. Check voltage between snow mode switch terminal 1 and ground with CONSULT-III or tester.

Voltage: Battery voltage

OK or NG
OK - GO TO 6.
NG - GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors E108, M15
- IPDM E/R harness connector E7
- 10 A fuse
- Harness for open or short between snow mode switch and fuse.
- Repair open circuit or short to ground or short to power in harness or connectors.
6.CHECK SNOW MODE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect "unified meter and A/C amp." harness connector.
3. Check harness continuity between snow mode switch terminal 4 and "unified meter and A/C amp." terminal 23. Refer to Wiring Diagram.

Continuity should exist.

4. Also check harness for short to ground and short to power.
OK or NG
OK - GO TO 9.
NG - Repair open circuit or short to ground or short to power in harness or connectors.
7.CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screws on the body. Power Supply and Ground Circuit.










OK or NG
OK - GO TO 8.
NG - Repair or replace ground connections.
8.CHECK SNOW MODE INDICATOR LAMP GROUND CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between snow mode switch terminal 2 and ground. Refer to Wiring Diagram.

Continuity should exist.

2. Also check harness for short to power.
OK or NG
OK - GO TO 9.
NG - Repair open circuit or short to power in harness or connectors.
9.CHECK SNOW MODE SWITCH
Snow Mode Switch.
OK or NG
OK - GO TO 10.
NG - Replace snow mode switch.
10.CHECK INTERMITTENT INCIDENT
Diagnosis Procedure.
- INSPECTION END