1.
Check APS2
(1)
Ignition "OFF".
(2)
Disconnect APS2 connector.
(3)
Measure resistance between terminals 3 and 6 of the sensor connector(to IAT sensor side).
Specification : 1.7kΩ ± 0.8kΩ (20°C)
(4)
Is the measured resistance within specifications ?
YES
▶ Substitute with a known-good ECM and check for proper operation.
If the problem is corrected, replace ECM and then go to "Verification of Vehicle Repair" procedure.
NO
▶ Substitute with a known-good APS2 and check for proper operation.
If the problem is corrected, replace APS2 and then go to "Verification of Vehicle Repair" procedure.
