Manual

13
TROUBLESHOOTING
GMC / AMS
04-27-2000
REV B
P.N. 104702
TP1 TP2
TP3 TP4
R21
U24 U23
R20
R19
R18
R17
R16
R15
R14
C18
C17
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FAX [phone]
PHONE [phone]
OCALA ,FL
Z1
XT1
U22U21U20U18U16
U15U14
U13U12U11U10U9U8U7
U5
U4
U3
U2
U1
RSP2
RSP1
R11
R10
R9
R8
R7 R6R5
R4
R3 R2
L2
L1
J1
FT14FT12FT11FT10FT8FT7FT6FT5FT4FT3FT2FT1
FT15
FB2
FB1
F1
D7 D6D5 D4
D3
D2
D1
C16
C15
+
C14
C13 C12
C11C10 C9C8
C7
C5
C4
C3
C2 C1
T15T14T13T12T11T10T9T8T7
T6
T5T4T3T2T1
SW1
FT13
R12
R13
U19U17
J2
J3 J4 J5 J6 J7 J8
J9
SW2
BATTERY
SWITCH
Switch
Master
GROUND
POSITIVE
3
4
1
2
1
234
BATTS
SHED
T15
SHED O/I
MAIN/ISO
7 1
OVER VOLTS
NO
MAIN
1 7
FAST IDLE
YES
ON
OFF
ON OFF
GND POS
Out-1 Out-2 Out-3 Out-4 Out-5 Out-6 Out-7
ISO
MASTER
TB 12
INPUT
GND POS
GND POS GND POS
GND POS
GND POS GND POS
Master Switch
Polarity Jumper
Output Polarity
Jumpers
FT8
FT9
Voltage Test Points:
TP1 System Voltage
TP2 Filtered Voltage
TP3 +5 VDC
TP4 Ground
SW1
configuration switch
Terminal 12
Control Jumper
Caution: If this jumper is in
the Master Switch position,
it is tied directly to Terminal 10
Visual check
Check jumpers J1-J9 and ensure that they are in the correct position for the application.
Check switch SW1 that 1-4 are in the correct postion for the operation desired.
Voltage Supply check
Check for system voltage between terminals T14 (ground) and T13 (12VDC). Check for sys-
tem voltage betweenTP4 (ground) and TP2 (12 VDC). These should be within 0.5 VDC.
Check for 5 VDC between TP4 and TP3 (+5 VDC).
These voltages must be present for the system to operate.
Master Switch check
Verify that J1 is in the proper position for the Master Switch you are using. Check for the input
at T10.
This controls load sequencing on and off.
Load Manage Enable check
Check for a ground at T11.
This inputs allows loads to shed and the Fast Idle output.
Output Test
Verify that jumpers J2 through J8 are in the correct position. With power on and a Master
switch input there should be either 12 VDC or Ground on T1 through T7 dependent on the the
position of J2-J8.