Celi Won't Start Code 51 Options

[djkurious]

Jumped in my celica and tried to start it and all I get is a clicking sound. All the accessories to come on, but no start. Immediately I thought it was the starter (which was replace 8 years ago), so I started tapping it with a hammer while a buddy was trying to start it. It still would not start. Also, I read the codes and it came back with a code 51. I took the starter off and took it for testing at Advance Auto and the starter was bad. Replaced it under warranty, re-installed it and it still would not start. The battery is good so I recharged it just to make sure it was putting out enough voltage. Tried to start again, still no start. It just keeps making the clicking sound. So now I read the codes again and it came back with a 51 from the ECM. I have read other posts and some members simply replace the starter and it was back running. Not the case here. Any suugestions?

[GriffGirl]

I was researching for a problem with my car when I came upon this information in the technical manual:

(referring to checking engine codes in test mode and normal mode)
"NOTE: On all models, Trouble Code 51 will normally be displayed if
automatic transmission/transaxle is in any gear except Park
or Neutral, A/C is turned on, or accelerator pedal is
depressed."

and also:

"CLEARING TROUBLE CODES
1) After performing repairs, clear ECM memory of all stored
trouble codes. To clear memory, turn ignition off. Remove proper fuse
from fuse/relay box for approximately 30 seconds or more. See FUSE
APPLICATION table and FUSE/RELAY BOX LOCATION table.
2) Depending on ambient temperature, fuse may need to be
removed for more than 30 seconds, especially in colder temperatures.
Install fuse. Road test vehicle. Ensure system operates properly (with
no trouble codes) and MIL flashes continuously and evenly. See Fig. 2.
NOTE: Trouble codes may also be cleared by disconnecting negative
battery cable. However, other memory functions (clock,
radio, alarm, seats, etc.) will be canceled and must be
reset.
3) With certain trouble codes, once trouble code has been
cleared from ECM memory, a trouble code detection driving pattern test
can be performed to verify repairs and that trouble has not reset. For
information on trouble code detection driving pattern test, see
TROUBLE CODE DETECTION DRIVING PATTERN TESTS."

Maybe this will be of some use to you?