DIAGNOSTIC STATUS CODES
SX TRANSISTOR CONTROL Page 29

January 2000

TRACTION

STATUS CODE DESCRIPTION OF STATUS CAUSE OF STATUS INDICATION

-29 Motor field current is too high during

the run mode (Dual motor

proportioning controls only)

This status code will be displayed when the motor

current in control “A” is greater than 98A, while the

motor current in control “B” is less than 26A for a 16

second interval.

MEMORY RECALL

YES CORRECTIVE ACTIONS

Circuits valid

for

Traction

Controller

SYMPTOM
Control will not operate.
POSSIBLE CAUSE
Continued operation of vehicle in high motor current condition.
=Verify operation of other control during the run mode.

TROUBLE-SHOOTING DIAGRAM

POWER CONNECTIONS
LEFT CONTROL
POS A1 F1
NEG A2 F2
FIELD
ARMATURE
FU1
POWER CONNECTIONS
RIGHT CONTROL
POS A1 F1
NEG A2 F2
FIELD
ARMATURE
FU5 KEY SWITCH
L
P7
P1
P17 P2 P6 P9
P3 P12 P8
P4 P5
SEAT SW.
START SW.
FORWARD SW.
REVERSE SW.
BRAKE SW.
P10 P21
ACC POT STEER ANGLE
POT BDI INTERRUPT
P18 P7 P12 P6P2P1 P3 P4 P5
P10 P13
LINE
P16 P15
PY7
PY12
PY10
PY11
P16
P15
AUTO REGENERATIVE
BRAKING ENABLE
PMT ENABLE OUTPUT
25
P18
STEER PUMP
CONTACTOR DRIVER
P11
REGEN OUTPUT
SIGNAL
29 50 30 66 65
PY7
PY12
PY10
PY11
PLUG PY
CONNECTIONS
PLUG PY
CONNECTIONS
8
6
15
710
12-1
10
SP
P1
P5
60 24
P4
12
P2
FU7
TO ACCESSORIES
FU6 P3 12-1
OSCILLATOR CARD
LEFT CONTROL
OSCILLATOR CARD
RIGHT CONTROL
3
A2
S1
TMM7 A2
A1
5
13A
A2
A1
+
-
SP
A1
A2
SP
FU4
89
88
TMM7
2
43
A1
S2
FU2
P
P