Eos (1F7) V6-3.2L (BUB) (2008)
Electronic Throttle Control Module: Testing and Inspection
Throttle Valve Control Module J338, Checking
‹› Use only gold-plated terminals when servicing terminals in harness connector of Mass Air Flow (MAF) Sensor (J338).
Special tools, testers and auxiliary items required
‹› Wiring diagram.
‹› The Engine Control Module (ECM) ( J623) fuses OK.
‹› Battery voltage at least 12.5 volts.
‹› All electrical consumers such as, lights and rear window defroster, switched off.
‹› Vehicles with automatic transmission, shift selector lever into position " P" or "N".
‹› A/C switched off.
‹› Ground (GND) connections between engine/transmission/chassis OK.
‹› Throttle valve must not be damaged or dirty.
‹› Coolant Temperature at least 80° C.
Throttle valve operation occurs via an electric motor (Throttle Drive (for Electronic Power Control (EPC)) (G186)) in Throttle Valve Control Module
( J338). It is operated by Engine Control Module (ECM) (J623) according to specifications of Throttle Position (TP) Sensor (G79 )/Accelerator Pedal
Position Sensor 2 (G185 ).
Components of Throttle Valve Control Module (J338 ):
‹› Throttle Drive (for Electronic Power Control (EPC)) (G186)
‹› Throttle Drive Angle Sensor 1 (for Electronic Power Control (EPC)) (G187)
‹› Throttle Drive Angle Sensor 2 (for Electronic Power Control (EPC)) (G188)
Perform a preliminary check to verify the customers complaint. Refer to => [ Preliminary Check ] See: Powertrain Management/Computers and
Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/Preliminary Check
Connect the scan tool.
Switch ignition on.
Using the scan tool, check the throttle valve position (absolute) at idle stop:
Slowly depress the accelerator pedal to Wide Open Throttle (WOT) stop while observing the percentage display. The percentage display must