Table 4-2. Unit Troubleshooting-continued -706880225

TM 5-4210-233-14&P-1

Table 4.2.

Unit Troubleshooting-Continued

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

ELECTRICAL SYSTEM-CAB CONTROLS AND INDICATORS-Continued

CAB PANEL FUEL GAUGE DOES NOT OPERATE

(Refer to Electrical Wiring Diagrams, Appendix H, Sheet 2 of 16.)

Step 1. Check sender.

Replace sender (see para 4 168).

Step 2. Check gauge.

Replace gauge (see para 4-93).

Step 3. Check for +12V at circuit breaker #1 on ignition accessory buss.

Replace breaker (see para 4-99).

Step 4. Check wiring for continuity.

Replace wire (see para 4-9.4).

INSTRUMENT PANEL GAUGE AND BACKLIGHTING DOES NOT ILLUMINATE

Refer to Electrical Wiring Diagrams, Appendix H, Sheet 2 of 16.)

Step 1. Check bulb.

Replace bulb (see para 4-95).

Step 2. Check dimmer control.

Replace dimmer control (see para 4-94).

Step 3. Check for +12V at headlight buss.

Refer to "headlights (high or low beam) do not illuminate" troubleshooting procedure.

Step 4. Check for +12V at circuit breaker #8 at headlight buss.

Replace breaker (see para 4-99).

Step 5. Check wiring for continuity.

Replace wire (see para 4-9.4).

4-96