TCM FB30-8 - Page 230

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3. TROUBLESHOOTING GUIDE
15(O)
5 V
0 V
5 V
0 V
(3) MC contactor works but the truck won’t travel.
CN1D-5
Drive motor
inverter
Key switch ......................... Turn it ON.
F/R lever .................... Shift into F or R.
Parking brake lever ................. Release.
Accelerator pedal ............ Do not press.
• Parking brake switch
• O 15
• BR 9
• Combination switch
• WBr 53
• WL 54
Accelerator 1 potentiometer,
LY93
Accelerator 2 potentiometer,
LG92
A: Below 0.5 V
B: Below 0.2 V
Key switch ............... Turn it ON.
F/R lever .......... Shift into F or R.
Parking brake lever ....... Release.
Accelerator pedal ...... Press fully.
53 (WBr) in F
54 (WL) in R
CN1D-18 in F
CN1D-19 in R
Drive motor
inverter
In maintenance mode:
A (Accelerator 1
potentiometer output
voltage)
B (Accelerator 2
potentiometer output
voltage)
1.5 V or more
Drive motor inverter
Key switch ......................... Turn it ON.
F/R lever .................... Shift into F or R.
Parking brake lever ................. Release.
Accelerator pedal ............ Do not press.