DIAGNOSTIC STATUS CODES
SX TRANSISTOR CONTROL Page 42
January 1999
TRACTION
STATUS CODE
DESCRIPTION OF STATUS CAUSE OF STATUS INDICATION
-84
Battery voltage is less than 24 volts for
more than 5 seconds.
This status code will be displayed when there is low
battery voltage seen at P1.
MEMORY RECALL
NO
CORRECTIVE ACTIONS TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Control will not operate.
POSSIBLE CAUSE
•= Dead battery
•= High voltage drop in P1 sense lead
POWER CONNECTIONS
LEFT CONTROL
POS A1 F1
NEG A2 F2
FIELD
ARMATURE
FU4
A1
A2
S1
S2
SP
+
-
FU1
POWER CONNECTIONS
RIGHT CONTROL
POS A1 F1
NEG A2 F2
FIELD
ARMATURE
L
P1 P17 P2 P6 P3 P4 P5
SEAT SW.
START SW.
FORWARD SW.
REVERSE
SW.
P23 P22P10 P13
SERIAL RECEIVE
SERIAL TRANSMIT
BDI INTERRUPT
P14 P15
I-MOTOR OUTPUT
BRAKESW.
STEER PUMP
FIELD
STEER PUMP
ARM
P11 P18
1A OR SP DVR
PLUG/RGN
OUTPUT
LEFT
CONTROL
(MASTER)
TO PUMP
CONTROL
POSITIVE
TO PUMP CONTROL POSITIVE
LINE
SPEED LIMIT SWITCH
FU3
KEY SWITCH
BRAKE SW.
Section 4.5 TMM Codes
TRACTION
STATUS CODE
DESCRIPTION OF STATUS CAUSE OF STATUS INDICATION
-90
USER DEFINED STATUS CODE
See instructions for Truck
Management Module for details.
This status code will be displayed when the voltage at
the respective terminal of the TMM or Pump Logic
Card is at zero volts.
MEMORY RECALL
YES
CORRECTIVE ACTIONS TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
&
Pump
Controller
SYMPTOM
Status code flashes “on and off”.
POSSIBLE CAUSE
User defined status code is displayed by switch
closure or motor brush sensor closure to
negative.
•= See GEH-TMM7A, “Truck Management
Module Instructions” for OEM defined status
codes for complete corrective action required.
Terminal 1 (TMM7A) is shorted to negative.
Plug P16 (pump) is shorted to negative.
Defective input switch (shorted).
Defective TMM card.
Defective pump card.
1345
279
6 8 10 11 12 13
14
15
P16
NEG
USER SW
SC90
WHEN TMM7A CARD IS USED
NEG
USER SW
WHEN SR Series PUMP
CONTROL IS USED
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