SELF-DIAGNOSIS FUNCTION
F-90flowchartProcedure
Switch Monitor — Main Procedure (05U0FX-097)
1
Set conditions to deactivate each switch
• All accessories OFF
• Transmission in neutral
• All pedals released
Verify that monitor lamp does not illuminate
NO
Check each switch and related wire harness
Check each switch and related wire harness
• Clutch and Neutral switch: Refer to page F-139
• Idle switch: Refer to page F-136
• Pow switch: Refer to page F-136
• Stoplight switch: Refer to Section T
• Headlight switch: Refer to Section T
• Blower switch: Refer to Section T
• A/C switch: Refer to Section U
• Water thermoswitch: Refer to Section E
YES
2
Check each switch as described
Neutral and Clutch switches
Neutral and Clutch switches (05U0FX-098)
1
Shift transmission into gear
Verify that monitor lamp illuminates with clutch pedal released
NO
PC: • Neutral or clutch switch malfunction (Refer to F-139)
PC: • Neutral or clutch switch malfunction (Refer to F-139)
• Open circuit in related wire harness
• Engine control terminal 1V malfunction (Refer to page F-129)
YES
2
Depress clutch pedal
Verify that monitor lamp does not illuminate
Return transmission to neutral
NO
PC: • Clutch switch malfunction (Refer to page F-139)
Idle terminal
Idle terminal (05U0FX-099)
1
Depress accelerator pedal (less than full) and verify that monitor lamp illuminates
NO
PC: • Idle terminal malfunction (Refer to F-136)
PC: • Idle terminal malfunction (Refer to F-136)
• Short circuit in wire harness from idle switch to engine control unit
• Engine control unit terminal 1N malfunction (Refer to page F-128)
YES
2
Idle terminal OK
Release accelerator pedal
Pow terminal
Pow terminal (05U0FX-100)
1
Depress accelerator pedal (less than full) and verify that monitor lamp illuminates
NO
PC: • Pow terminal malfunction (Refer to F-128)
PC: • Pow terminal malfunction (Refer to F-128)
• Short circuit in wire harness from Pow terminal to engine control unit
• Engine control unit terminal 2L malfunction (Refer to page F-129)
YES
2
Pow terminal OK
Release accelerator pedal
Stoplight switch
Stoplight switch (05U0FX-101)
1
Depress brake pedal and verify that monitor lamp illuminates
NO
PC: • Stoplight switch malfunction (Refer to Section T)
PC: • Stoplight switch malfunction (Refer to Section T)
• Open circuit in wire harness from stoplight switch to engine control unit
• Engine control unit terminal 1O malfunction (Refer to page F-128)
YES
2
Stoplight switch OK
Release brake pedal