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Page Title: NO CHECK GAUGES LIGHT (CGL) DURING BULB CHECK
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TM9-2320-360-20-3 Section  4 TROUBLESHOOTING   CHARTS D. CHART -8 - NO “CHECK GAUGES” LIGHT (CGL) DURING BULB CHECK NOTE  -  This chart is only to be used if: 1)  All  basic  mechanical  checks  and  physical  inspections  have  been  performed  with  no  problem  found,  and 2) Diagnosis of DDEC-III was started at step START-1, pg H-25 and you have now been referred here. STEP/SEQUENCE C8-1 Try  to  Force  CGL  on l Plug  in  DDR. l Turn  ignition  on. l Select  activate  outputs l Activate  CGL  with  DDR. C8-2 Check  for  Short l Remove  jumper  wire. l Read  voltage  on  vehicle  harness connector,  socket  B3  (red  lead) to a good ground (black lead). C8-3 Bulb  Chock l Remove  CGL  bulb  and  check whether it’s burned out or otherwise   damaged. RESULT I WHAT TO DO NEXT Go to C 8-2 Go to C 8-4. Less  than 11.5  volts. DDEC ignition circuit breaker (CB11) is blown, and/or ignition line (ckt #439) is open or  shorted  to  ground.  Repair problem.  Then  go  to  C8-30. Greater  than or equal to 11.5 volts. Go  to  C  8-3. Bulb   is okay. CGL Driver line (ckt #509) is open.  Repair  open.  Then  go  to C8-30. Bulb  is not okay. Replace  bulb  (para  7-40).  Then go  to  C8-30. H-85

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