IG "OFF" and disconnect A/C Refrigerant Pressure Sensor, MAPS, TPS, APS connector.
IG "ON".
Check that sensor connector power supply is within the specification after turning IG KEY "ON".
Connect A/C Refrigerant Pressure Sensor connector,MAPS connector, TPS connector, APS connector in turn.
Measure the voltage of power circuit of each sensor with all connector connected.
Specification : Approx. 5V
Does change of sensor power supply occur as connecting sensor connector?
 | ▶ Substitute with a known - good ECM and check for proper operation. If the problem is corrected, replace ECM and go to "Verification of Vehicle Repair" procedure. |
 | ▶ Go to "Verification of Vehicle Repair" procedure. |
