GLI L4-2.0L Turbo (CCTA) (2008)
-
Check the value indicated on the scan tool display.
If indication jumps to approx. 140 °C:
-
Switch ignition off.
-
Replace the MAF / IAT sensor (G70 / G42).
If indication remains at approx. -40 °C or -46 °C:
Checking wiring
If the manufacturers test box is being used, perform the following step.
-
Install the test box.
If the manufacturers test box is not being used, perform the following step.
-
Remove the Motronic Engine Control Module (ECM) (J623).
-
Disconnect the ECM harness.
-
Using a multimeter, check the MAP / IAT sensor (G70 / G42) electrical harness connector terminal 5 to the Motronic Engine Control Module
(ECM) (J623) electrical harness connector T94 terminal 60 for an open circuit or a short to voltage, refer to the wiring diagram.
Specified values: Circuit continuity; 1.5 ohms max; Circuit voltage = 0 volts when disconnected from ECM (with ignition on).
If the specified value was Not obtained: