P1436 JEEP A/C Evaporator Air Temperature Circuit Low
The PCM sources a low current 5 volts on the ACET circuit (this voltage can be measured with the sensor disconnected). As the A/C evaporator air temperature changes, the ACET circuit resistance to SIG RTN (ground) changes (which changes the voltage the PCM detects). When the ACET signal is detected below the self-test minimum, check for shorts to the SIG RTN or ground, which would pull the voltage low.
– Engine Light ON (or Service Engine Soon Warning Light)
P1436 JEEP Description
Indicates the ACET signal input was less than the self-test minimum. The self-test minimum is 0.13 volts.
JEEP Vehicle:JEEP Commander,JEEP Compass,JEEP Grand Cherokee,JEEP Liberty,JEEP Patriot,JEEP Wrangler,JEEP Wrangler Unlimited,