TCM FB20-8 - Page 215

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3. TROUBLESHOOTING GUIDE
(12)
210
-
: Accelerator signal wire short-circuited
Automatically resets when the input returns to
normal.
① Check the voltage at CN2D-8 and -9 terminals on
the drive motor inverter unit.
② Check the drive motor inverter unit (CN2D-8, -9)
harness.
Correct the wiring.
③ Check the accelerator unit.
Repair the accelerator unit.
307
-
: Accelerator potentiometer not positioned
properly
Automatically resets when the accelerator voltage
is 0.8 V or more.
① Check the voltage at the CN2D-8 and -9 terminals
on the drive motor inverter unit.
② Check the accelerator unit for proper positioning.
Accelerator voltage should be 1.00 V in the neutral
position.
③ Replace the accelerator unit.
(13)
213
16
: Drive motor inverter unit U-phase FET open
Resets when the key switch is turned OFF.
214
17
: Drive motor inverter unit V-phase FET open
Resets when the key switch is turned OFF.
215
18
: Drive motor inverter unit W-phase FET open
Resets when the key switch is turned OFF.
① Check the drive motor for loose terminals.
Retighten.
② Check the drive motor cable.
Correct the cable.
③ Replace the drive motor inverter unit.
(14)
216
24
: V-phase current detection abnormal
AD input too low, AD input too high
Resets when the key switch is turned OFF.
216
25
: V-phase current offset abnormal
AD input too low, AD input too high
Resets when the key switch is turned OFF.
216
26
: W-phase current detection abnormal
AD input too low, AD input too high
Resets when the key switch is turned OFF.
216
27
: W-phase current offset abnormal
AD input too low, AD input too high
Resets when the key switch is turned OFF.
① Replace the drive motor inverter unit.