6-5
WARNING
Many troubleshooting procedures present hazards that can result in severe personal inju-
ry or death. Only qualified service personnel with knowledge of fuels, electricity, and machinery haz-
ards should perform service procedures. Review safety precautions on page iii.
TABLE 6-1. SPEC A CONTROL TROUBLESHOOTING – CRANKING MODE
Trouble Possible Cause Corrective Action Section/
Page
Engine Does 1. Open control fuse F1. 1. Check fuse. If open, locate and correct
Not Crank cause of overload. Replace fuse.
2. Insufficient cranking voltage due to: 2a. Check condition of battery and
(Also see Table 6-5 on page 6-13) recharge or replace.
a. Battery not charged. 2b. Clean and tighten all connections at
b. Battery connections loose or dirty. battery, K1 start solenoid, and starter
c. Battery cable size too small. motor.
2c. Increase starting battery cable size.
3. Start solenoid (K1) not energized 3a. Check wiring continuity to the start
due to: solenoid (K1) coil from control assy.
a. Open circuit to start solenoid coil. (A1) and from ground to start solenoid.
b. Defective start solenoid coil. 3b. Test start solenoid (K1). 7-6
c. Defective Start/Stop switch. 3c. Test Start/Stop switch (S1). 7-5
d. Defective control assembly (A1). 3d. Measure voltage between start solenoid 7-6
terminal I and ground with switch (S1)
held in the Start position. If voltage is
not present and continuity and battery
check OK, Cont. assy. (A1) is defective.
4. Starter (B1) not energized due to: 4a. Check continuity between starter lead on 7-6
a. Open circuit to starter (B1). start solenoid (S) and gnd. (4 ±1 ohm).
b. Open circuit between battery (B+) 4b. Check wiring continuity between battery 7-6
and the start solenoid contact (BAT). (B+) and the start solenoid (BAT).
c. Defective start solenoid (K1) . 4c. Measure voltage between starter terminal 7-6
d. Defective starter (B1). and ground with switch (S1) held in the
Start position. If voltage is not present
and continuity checks OK, start solenoid
(K1) is defective.
4d. If voltage is present in step 4c, starter 8-26
is defective.
5. If engine cranks from set but not from 5a. Check wiring continuity between
remote control panel, fault is due to: control assembly (A1) and remote
a. Open circuit between control assy. Start/Stop switch.
(A1) and remote Start/Stop switch.
b. Remote Start/Stop switch faulty. 5b. Test remote Start/Stop switch.
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