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Page Title: COOLANT LEVEL CIRCUIT FAILED HIGH (VOLTAGE HIGH)
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TM9-2320-360-20-3 Section  4 TROUBLESHOOTING CHARTS E. FLASH CODE: 16 J1587   CODE: P111  3  -  COOLANT  LEVEL  CIRCUIT  FAILED  HIGH  (VOLTAGE  HIGH) 16-4 Check for Signal Short to lgnition l Disconnect  the  vehicle  harness connector  at  the  ECM. l Remove jumper wire at the CLS connector. l Read  resistance  between  sockets H3  (ckt  #115)  and  B3  (ckt  #439) of  vehicle  harness  connector. 16-5 Check   ECM Connectors l Check  terminals  at  the  vehicle harness  connector  (both  the  ECM and  harness  side)  for  damage; bent,  corroded,  and  unseated pins  or  sockets.  Check  terminal and  pin  H3  at  the  ECM  and  all terminals and pins in the CLS connector. 16-6 Check for Open l Disconnect  the  vehicle  harness connector  at  the  ECM. l Place the red lead of the volt meter  into  socket  B3  (439)  and black  lead  to  a  good  ground. l Turn  ignition  on. l Read   voltage. RESULT Less  than 10,000  ohms. Greater  than or  equal  to  10,000  ohms or  open. Terminals  and connectors  are  okay. Problem  found. Less  than  or equal to 10 volts. Greater  than Replace  ECM  (para  7-29.1). 10   volts. Then  go  to  16-30. The  CLS  signal  line  (ckt  #115) is  shorted  to  the  ignition  line (ckt  #439).  Repair  short.  Then go  to  16-30. Go to 16-5. Go to 16-6. Repair    terminals/connectors (para  7-77).  Then  go  to  16-30. An open exists on the ignition line  (ckt  #439).  Repair open.  Then  go  to  16-30. H-135

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