Electronic tranz & scan toolz- ON CAR

Abbreviations
PCM = powertrain control module
TCC = torque converter clutch
TPS = throttle position sensor
ECT = engine coolant temperature sensor
VSS = vehicle speed sensor
PSA = transmission range fluid pressure switch assembly
TTS = transmission temperature sensor




code 14
engine coolant temperature signal voltage low
possible cause ECT signal voltage has been above 140degrees celsius for 1 second
default action TCC apply cold

code 21
throttle position sensore signal voltage high
possible cause DTC 21 will set if TPS signal voltage has been above 4.9volts for 2 seconds while the engine is idling
default actions are:
*firm hard shifts
*set line pressure to maximum
*fixed shift points
*no 4th gear if in hot mode
no TCC operation