Specifications

36
STATUS CODE
-26
DESCRIPTION
Shorted coil driver for SP or FW contactor.
No
MEMORY
RECALL
CONTROL
TYPE
Traction
Figure 1
SYMPTOM
SP or FW contactor picks up immediately when key switch
is closed.
POSSIBLE CAUSE
Defective coil driver internal to logic card.
 Replace logic card.
STATUS INDICATION CRITERIA
This status code is displayed when there is a shorted
RB,SP or FW coil driver.
STATUS CODE
-41
DESCRIPTION
No
MEMORY
RECALL
CONTROL
TYPE
Traction
Figure 1
STATUS INDICATION CRITERIA
This status code is displayed when the voltage
between PZ1 and PZ5 is greater than 1.8 volts.
Open thermal protector (TP) or control over temperature.
SYMPTOM
Reduced or no power to traction motor in SCR range.
POSSIBLE CAUSE
Open thermal protector circuit.
 Check for loose connection or broken wire be-
tween:
Black wire-Thermal proctor and PZ1.
Gray wire-Thermal proctor and PZ5.
Defective thermal protector.
 Disconnect wires from PZ1 and PZ5. At room
temperature (25
o
C or 75
o
F) measure resistance
between black and gray wire. Replace TP if ohmic
value is greater than 300 ohms.
SCR is in thermal cut-back.
 Allow control to cool, status code should disap-
pear.