Quantcast 22.  CLEARANCE, SIDE MARKER, AND ID LIGHT(S) DO NOT OPERATE (CONT) - TM-9-2320-364-20-2_578

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Page Title: 22. CLEARANCE, SIDE MARKER, AND ID LIGHT(S) DO NOT OPERATE (CONT)
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VOLTAGE TEST - TM-9-2320-364-20-2_577
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CONTINUITY TEST - TM-9-2320-364-20-2_579
TM 9-2320-364-20-2 2-1354 22.  CLEARANCE, SIDE MARKER, AND ID LIGHT(S) DO NOT OPERATE (CONT). Taillights operate indicating   10 to 14 vdc to wire 1008. Circuit breakers CB2 and CB4   not tripped. Work lights operate indicating   10 to 14 vdc to CB2. Side marker light lamp or   LED OK. Wire 1012 OK. Side marker light OK. Circuit breaker CB2 OK. Wire 1835 OK. Wire 1920 OK. Relay R2 wire 1435 OK. Clearance lights relay R2 faulty. Wire 1012 faulty. KNOWN INFO POSSIBLE PROBLEMS TEST OPTIONS REASON FOR QUESTION Voltage test. STE/ICE-R #89. If 10 to 14 vdc are measured, wire 1012 is faulty. If 10 to 14 vdc are not measured, relay R2 is faulty. YES NO Replace clearance lights relay R2 (Para 7-95). Verify repair, go to Step 10 of this Fault. 9. Are 10 to 14 vdc measured on wire 1012 at clearance light relay R2, terminal 87? Repair wire 1012 (see schematic Fig 2-34) or notify DS Maintenance. Verify repair, go to Step 10 of this Fault. 8. Repair wire 1435 (see schematic Fig 2-34) or notify DS Maintenance. Verify repair, go to Step 10 of this Fault. YES NO Taillights operate indicating   10 to 14 vdc to wire 1008. Circuit breakers CB2 and CB4   not tripped. Work lights operate indicating   10 to 14 vdc to CB2. Side marker light lamp or   LED OK. Wire 1012 OK. Side marker light OK. Circuit breaker CB2 OK. Wire 1835 OK. Wire 1920 OK. Relay R2 wire 1435 faulty. Clearance lights relay R2 faulty. Wire 1012 faulty. KNOWN INFO POSSIBLE PROBLEMS TEST OPTIONS REASON FOR QUESTION Continuity test. STE/ICE-R #91. If relay R2 is not grounded through wire 1435, clearance, side marker, and ID lights will not operate. WARNING WARNING Is continuity measured on wire 1435 between clearance lights relay R2, terminal 86 and a known good ground? Read WARNING on Page 2-1355 Read WARNING on Page 2-1355

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