TM 5-3805-281-24-1
Sub-System Diagnostics
1 STARTING CIRCUIT DIAGNOSTIC PROCEDURES
IMPORTANT: Do not disconnect electrical connectors while the engine is running. Damage to Engine and
Pump Controller or other components may result. Disconnect connectors only when instructed during a
test or check.
1/1
YES: Go to next step.
KEY SWITCH (S1)
1--B Terminal
CHECK
2--G1 Terminal
9015
NO: Key switch has
3--G2 Terminal
15
failed. Replace.
4--ACC Terminal
17
5--M Terminal
6--ST Terminal
Remove harness from key switch.
T8357AL
UN09NOV94
Turn key switch to ON.
Is continuity measured between terminals 1 and 4, and 1
and 5?
YES: Key switch is OK.
1--B Terminal
2--G1 Terminal
NO: Key switch has
3--G2 Terminal
failed. Replace.
4--ACC Terminal
5--M Terminal
6--ST Terminal
Remove harness from key switch.
T8357AM UN02DEC98
Turn key switch to START.
Is continuity measured between terminals 1 and 5, and 1
and 6?
1/1
