HYDRAULIC SUSPENSION LOCKOUT WILL NOT ENGAGE (HMMH) (REG. NO. UC053E THRU UC053K) cont'd -680640370

TM 5-2420-224-20-1

Table 3-5. Troubleshooting (Cont)

Malfunction

Test or Inspection

Corrective Action

ELECTRICAL SYSTEM (CONT)

Step 11. Check wire (14) at D+ relay (7) for continuity to ground.

If short to ground, replace D+ relay.

If open to ground, repair wiring (14) between D+ relay and

ground at fuse box 1.

Step 12. Check for +24 VDC between wire (15) and ground at solenoid relay (13).

If +24 VDC is not present, repair wiring (15) between solenoid

relay and D+ relay.

If +24 VDC is present, go to step 13.

Step 13. Check for +24 VDC between wire (16) and ground at solenoid relay (13).

If +24 VDC is not present, repair wiring (16) at solenoid relay.

If +24 VDC is present, go to step 14.

Step 14. Check for +24 VDC between wire (17) and ground at indicator light (18).

If +24 VDC is not present, repair wiring (17) between solenoid

relay and indicator light.

If +24 VDC is present, go to step 15.

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