Table 4-2. Unit Troubleshooting-continued -706880200

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

Table 4-2.

Unit Troubleshooting-Continued

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

ELECTRICAL SYSTEM-IGNITION CIRCUITS-Continued

ENGINE/TRANSMISSION BUZZER REMAINS ON

(Refer to Electrical Wiring Diagrams, Appendix H, Sheet 3 of 16.)

Step 1. Check low oil PSI switch.

Replace switch (see para 4-138).

Step 2. Check low air PSI switch.

Replace switch (see para 4-9.4).

Step 3. Check low rear air PSI switch.

Replace switch (see para 4-9.4).

Step 4. Check high transmission oil pressure switch.

Replace switch (see para 4-9.4).

Step 5. Check high/low voltage alarm.

Replace alarm. (see para 4-9.4).

Step 6. Check wiring for continuity.

Replace wire (see para 4-9.4).

ENGINE/TRANSMISSION ALARM BUZZER DOES NOT SOUND DURING IGNITION TEST

(Refer to Electrical Wiring Diagrams, Appendix H, Sheet 6 of 16.)

Step 1. Check for +12V on ignition accessory buss.

Refer to "+12 volts not present at battery accessory buss" troubleshooting procedure.

Step 2. Check for +12V at circuit breaker #4 on ignition accessory buss.

Replace breaker (see para 4-99).

Step 3. Place a jumper from wire 1046 to a good ground.

If buzzer sounds, go on to step 4.

If buzzer does not sound, replace alarm buzzer unit (see para 4-96).

4-71