Diagnostic Aids
WARNING: This page is about a different variant/trim than selected.
NOTE:
After each service or repair procedure has been completed, reconnect all components. Clear DTCs and repeat QUICK TEST procedures to ensure all electronic engine control systems are working properly and DTCs are no longer present.
NOTE:
MAT sensor may also be referred to as Air Charge Temperature (ACT) sensor.
Perform this test when directed by QUICK TEST. This test is only intended to diagnose the following components and circuits:
- Manifold Air Temperature (MAT) Sensor
- Wiring Harness Circuits (VREF, SIG RTN & MAT SIG)
- Powertrain Control Module (PCM)
MAT sensor is used to measure intake air temperature after being cooled through intercooler. MAT sensor signal is used to determine injection timing.