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Page Title: ELECTRONIC FOOT PEDAL ASM (EFPA) CIRCUIT FAILED HIGH (VOLTAGE HIGH) ALSO CALLED THROTTLE POSITION SENSOR (TPS)
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TM   9-2320-360-20-3 Section  4 TROUBLESHOOTING   CHARTS E.  FLASH  CODE:    21 J1587   CODE:    P 9 1 3- ELECTRONIC  FOOT  PEDAL  ASM  (EFPA)  CIRCUIT  FAILED  HIGH (VOLTAGE HIGH) ALSO CALLED THROTTLE POSITION SENSOR (TPS) 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. NOTE  -  Checks  at  the  TPS  connector  must  be  made  at  MC36,  not  at  the  connector  on  the  electronic  throttle. 21-1 Multiple   Code   Check Were  there  any  other  active codes   besides   91/3? 21-2 Sensor   Check Turn ignition off. Disconnect  TPS  connector. Turn ignition on. Read  active  codes. 21-3 Return   Circuit Check Turn  ignition  off. Install  a  jumper  wire  between  pins A and B of the TPS harness connector. Disconnect the vehicle harness connector  at  the  ECM. Read resistance between sockets D2  and  C3  on  the  vehicle  harness connector. 21-4 Check   TPS Adjustment Reconnect   vehicle   harness connector  and  plug  TPS  back  in. Hook-up  DDR  to  the  DDL connector  and  select  TPS  CNTS. Turn ignition on. Getting   64-205   Go to 21-6. counts  at  no  throttle  and less  than  968  counts  at full  throttle. Read  TPS  Counts  at  both  no Not  getting  the  above throttle  and  full  throttle. reading. RESULT WHAT  TO  DO  NEXT No  other  active  codes. Yes, any or all of  the  following  active codes: 187/3, 91/4. Go to 21-2. Go to VEH5V-1 (page H-247). Yes - But none of  the  above. Go to 21-2. (except  Code  91/3). Go to 21-3, Code  91/3  (and  any Go to 21-7. Less  than  or equal to 5 ohms.   Go to 21-4. Greater  than 5  ohms  open.   Return line (ckt #952) and/or signal (ckt #417) is open. Repair open. Then go to 21-30.   Replace TPS (Electronic Throttle) (para 7-28). Then go to  21-30. H-139

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