Test TC: Step 40

40) Code 56: Attempt To Generate Code 66  Code 56 indicates TOT signal is greater than Self-Test maximum value of 4.80 volts. Possible causes for this fault are: faulty TOT sensor, open harness circuit, faulty ECA. Turn key off and wait 10 seconds. Disconnect transmission bulkhead connector from TOT sensor. Inspect for corroded or damaged pins. Service or repair as necessary. Insert a jumper wire at the bulkhead connector between TOT SIGNAL and SIGNAL RETURN. Run KOEO Self-Test. If Code 66 is present, remove jumper wire and service or replace TOT sensor. If Code 66 is not present, remove jumper wire and go to next step.