Goto 22-30. Section 4 TM   9-2320-363-20-1 TROUBLESHOOTING CHARTS E.   CODE 22 THROTTLE POSITION SENSOR (TPS)    SIGNAL VOLTAGE LOW 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-II   was   started   at  step   Start-1  (page   3-121)   and  you  have  now   been   referred here. When  Mode   02  (Historical Codes)   is  displayed on  the  DDR.  additional    audit   trial  information    IS also   shown For  an  understanding Of this   information, refer  to  the  example   given   in  the  Code   85  chart RESULT WHAT   TO   DO  NEXT 22-1 Multiple Code    Check l Were   there   any   other    active codes besides Code 22? 22-2 Sensor Check l Turn   ignition off. l  Disconnect TPS connector. •  Install    a  jumper wire   between sockets B and  C  of  the  TPS harness   connector. l Turn  Ignition    on. l  Read    active    codes. 22-3 Check TPS Adjustment l  Remove jumper and   reconnect TPS .   Hock-up DDR   to  the   12  pin   DDL connector and  select   Throttle Sensor display. l Read    Throttle    Counts    at  both    no throttle and   full   throttle. 22-4 Attempt TPS Adjustment .  Check   for   pedal   or   linkage interferences. No  other Go to  22-2. active    codes. Yes,   active    code 21. Go to  VEH5V-1 (page 3-333). Yes  -  but   none Go   to  22-2. of  the   above. Code    22  and/or Go   to  22-6. other   cedes. Code    21  (and any Go to    22-3. other codes). Getting 20-30 Go  to  22-5. counts at  no  throttle and 200-235 counts at   full throttle Not   getting the Go   to  22-4. above readings. Throttle Counts IS correct. Could no? correct the Go   to  22-5. problem 3-229