PASSIVE ULTRASONIC SENSOR FAILURE

TM 5-6350-275-24&P

Table 3-9. Sensors DS Maintenance Troubleshooting - Continued

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

8. PASSIVE ULTRASONIC SENSOR FAILURE (Figure 3-17)

Step 1. Remove front cover (2) and perform a walk test (per the SAIG) of PUS protected area while generating

an ultrasonic sound, such as jingling of keys. The PUS LED should illuminate.

If LED does not illuminate, go to step 3.

If LED illuminates, the PUS is good. Go to step 2.

Step 2. Check continuity and replace wiring between PUS and RADC as necessary.

If wiring is good, go to troubleshooting procedures for the RADC (Table 3-3).

Step 3. Set multimeter to read vdc and place negative lead on TB1 pin 2 and positive lead on TB1 pin 1. The

multimeter should read approximately 12 vdc.

If multimeter indication is correct, replace the PUS (Para. 3-123).

If voltage is not present, check continuity of wiring between the PUS TB1 pins 1 and 2 and RADC

Stargate TBK pins 3 and 4.

If continuity is present, the trouble is in the RADC.

If continuity is not present, replace wiring as necessary.

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