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 : Sensor power supply should not change as connecting A/C Refrigerant Pressure Sensor connector, MAPS connector, TPS connector, APS connector.
Does change of sensor power supply occur as connecting sensor connector?
 | ▶ Replace related sensors.(A/C Refrigerant Pressure Sensor, MAPS, TPS, APS) |
 | ▶ Substitute with a known - good ECM/PCM and check for proper operation. If the problem is corrected, replace ECM/PCM and go to "Verification of Vehicle Repair" procedure. |
