AIR INDICATOR DOES NOT LIGHT.

TM 3-1040-279-12&P

TROUBLESHOOTING (CONT)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

3. AIR INDICATOR DOES NOT LIGHT.

Step 1.

Check that air compressor started when circuit breaker CB1 and POWER switch were set to

ON.

If air compressor started, go to next step.

If air compressor did not start, go to malfunction 9.

Step 2.

Check AIR indicator lamp after air compressor stops.

Press lens of indicator.

If lamp does not light, replace lamp (P. 4-110).

If lamp lights, go to next step.

Step 3.

Check for 28v output from control panel.

Disconnect cable assembly from connector 1J3 or 1J4 (No. 1 or No. 2 generator) at control

panel.

Check for 28v between sockets A (+) and N (-) of 1J3 or 1J4 (No. 1 or No. 2 generator).

If 28v is obtained, reconnect cable assembly and go to next step.

If 28v is not obtained, check control panel wiring (P. 4-125) for an open circuit.

Check pressure switch S106.

Step 4.

Disconnect cable assembly from connector 5J1 at smoke generator.

Check continuity between pins A and E of connector 5J1.

If continuity is obtained, vehicle cable assembly is defective. Notify your supervisor.

If continuity is obtained, vehicle cable assembly is defective. Refer to

TM 9-2350-261-20-1 for equipment mounted on M1059 vehicles or TM 3-1040-280-20&P

for equipment mounted on M1037/M1097 vehicles.

If continuity is not obtained, replace pressure switch S106 (P. 4-98).

4. FUEL INDICATOR DOES NOT LIGHT.

Step 1. Check FUEL indicator lamp.

Set circuit breaker CB1 and POWER switch to ON.

Press lens of FUEL indicator.

If lamp does not light, replace lamp (P. 4-110).

If lamp lights, go to next step.

Change 4

4-9