Specifications

42
STATUS CODE
-53
DESCRIPTION
1 REC fails to turn off during plug cycle.
Yes
MEMORY
RECALL
CONTROL
TYPE
Traction
Figure 1
STATUS INDICATION CRITERIA
This status code is displayed when any failure of 1
REC to turn off during plug cycle.
SYMPTOM
Forward or reverse contactor opens and closes, then opens and can
only close by opening and closing the key switch.
POSSIBLE CAUSE
1 REC turn off failure not related to plugging.
 Stall vehicle in both directions and note any status codes
displayed that may more closely define the failure mode.
Troubleshoot per new status code.
1 REC turn off related to plugging.
 Check 4 REC circuit for open 4 REC, loose or open cable/
bus connections.
 Check current sensor for loose or open connection in power
circuit. Check yellow and green wire from sensor to logic
card for open and loose connection.
Defective motor circuit.
 Check motor circuit for open or loose connections.
 Check motor brushes for proper seating.
F or R contactor power bouncing open.
 Insure that F and R contactor does not bounce open during
vehicle operation (ie: traveling over speed bumps and dock
plates).
STATUS CODE
-52
DESCRIPTION
Excessive capacitor voltage when motor current is low.
Yes
MEMORY
RECALL
CONTROL
TYPE
Traction
Figure 1
SYMPTOM
Forward or reverse contactors open and close, then can
only be closed by opening and closing the key switch.
POSSIBLE CAUSE
Excessive source inductance.
 Tag lines without filters are being used.
 Battery cables are too long.
Defective 4 REC circuit.
 Check for shorted 4 REC.
 Check for open circuit or loose connection in 4
R E C circuit.
Defective 3 REC circuit.
 Check for open circuit or loose connection in 3
R E C circuit.
STATUS INDICATION CRITERIA
This status code is displayed when capacitor volts
exceed 225 volts and motor current is less than 200
amps.