ELECTRICAL TROUBLESHOOTING - continued - TM-9-2320-386-24-1-10104

TM 9-2320-386-24-1-1

0012 00

Electrical Troubleshooting (Contd)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Test 3. Test for voltage at wiper motor.

Step 1. Disconnect harness from wiper motor.

Step 2. Set wiper switch to LOW position.

Step 3. Touch negative lead of multimeter to ground and positive lead to pin 2 of harness

receptacle.

a. If voltage is present, go to step 4.

b. If voltage is not present, replace wiper switch (WP 0232 00).

Step 4. Set wiper switch to HIGH position.

Step 5. Touch negative lead of multimeter to ground and positive lead to pin 1 of harness

receptacle.

a. If voltage is present, replace wiper motor (WP 0232 00).

b. If voltage is not present, replace wiper switch (WP 0232 00).

END OF TESTING!

24. ENGINE CRANKS BUT WILL NOT START (FUEL AVAILABLE)

Test 1. Check quick-start cylinder.

Step 1. Remove quick-start cylinder from valve, shake, and listen for liquid splashing inside

cylinder.

a. If empty, replace with full cylinder and try starting engine.

b. If full, reinstall cylinder and go to test 2.

Test 2. Test for voltage at quick-start switch.

Step 1. Touch negative lead of multimeter to ground and positive lead to quick-start switch.

Step 2. Turn accessory/battery switch to ON position.

Step 3. Crank engine, engage quick-start switch, and observe multimeter.

a. If voltage is found, replace lead 569A (WP 0125 00).

b. If voltage is not found, go to step 4.

Step 4. Disconnect lead 569 from quick-start switch.

Step 5. Touch negative lead of multimeter to ground and positive lead to lead 569.

Step 6. Turn accessory/battery switch to ON position.

a. If voltage is found, replace quick-start switch (WP 0104 00).

b. If voltage is not found, test accessory/battery switch operation (TM 9-2320-361-20).

END OF TESTING!

25. AIR DRYER HEATER FAILS TO WORK 40 DEGREES OR BELOW

Test 1. Check for continuity of air dryer heater.

Step 1. Disconnect harness plug from air dryer connector.

Step 2. Set multimeter to measure continuity.

NOTE

Air dryer heater will not have continuity between pin 1 and pin 2

unless air dryer heater is cooled to below 54F (13C).