GE IC3645SR4U404N2 Armature transistor did not turn on, Look Ahead test for A2 volts less

DIAGNOSTIC STATUS CODES

SX TRANSISTOR CONTROL Page 33

TRACTION	DESCRIPTION OF STATUS
STATUS CODE
-45	Armature transistor did not turn on
	properly.
MEMORY RECALL	CORRECTIVE ACTIONS
YES
	SYMPTOM
Circuits valid	Line contactor opens and closes, then can only
	be closed by opening and closing the key
for	switch.
Traction	POSSIBLE CAUSE
Controller	Defective control.
	• Replace controller unit.

CAUSE OF STATUS INDICATION

This status code will be displayed when, during control operation, the armature transistor fails to turn on properly. This will result in a PMT condition.

TROUBLE-SHOOTING DIAGRAM

				BRAKE SW.
FU5	P2 KEY SWITCH P1			SEATSW.	STARTSW.	FOR.SW.	REV. SW.
FU7			SP
	TO	P5
			L
FU6	ACCESSORIES	P4
	P3
	PY7					P4
	PY12 P18		P17 P1 P2	P6	P3		P5
	PY10		OSCILLATOR CARD		P7	P10 P9 P12 P8
	PY11		LEFT CONTROL
LINE FU1
							STEER
FU2							ANGLE
					ACC POT		POT

+	FU4								BDI INTERRUPT
	P
		POS	A1	F1	FIELD	ARMATURE	NEG	A2	F2	FIELD	ARMATURE
-			POWER
							POS	A1	F1
	SP	CONNECTIONS					POWER
		LEFT CONTROL					CONNECTIONS
		NEG	A2	F2			RIGHT CONTROL
P	SP

TRACTION	DESCRIPTION OF STATUS
STATUS CODE
-46	“Look Ahead” test for A2 volts less
	than 12% of battery volts.
MEMORY RECALL	CORRECTIVE ACTIONS
NO
	SYMPTOM
Circuits valid	Line contactor will not pick up.
for	POSSIBLE CAUSE
Traction
	Check for short circuit from the motor armature
Controller	to the frame of the vehicle.

Defective control.

•Replace controller unit.

CAUSE OF STATUS INDICATION

This status code will be displayed when the voltage at A2 is less than 12% of battery volts.

TROUBLE-SHOOTING DIAGRAM

				BRAKE SW.
FU5	P2 KEY SWITCH P1			SEATSW.	STARTSW.	FOR.SW.	REV. SW.
FU7			SP
	TO	P5
			L
FU6	ACCESSORIES	P4
	P3
	PY7					P4
	PY12 P18		P17 P1 P2	P6	P3		P5
	PY10		OSCILLATOR CARD		P7	P10 P9 P12 P8
	PY11		LEFT CONTROL
LINE FU1
							STEER
FU2							ANGLE
					ACC POT		POT

+	FU4								BDI INTERRUPT
	P
		POS	A1	F1	FIELD	ARMATURE	NEG	A2	F2	FIELD	ARMATURE
-			POWER
							POS	A1	F1
	SP	CONNECTIONS					POWER
		LEFT CONTROL					CONNECTIONS
		NEG	A2	F2			RIGHT CONTROL
P	SP

January 2000