Checking the power supply and ground terminal for the electronic throttle module (ETM)

Checking the power supply 

• Check the fuse for the electronic throttle module (ETM) in the fusebox in the engine compartment. If the fuse is blown, check the circuit after the fuse. Check for a short-circuit to ground
• Check the power supply for the electronic throttle module (ETM). The voltage must be approximately battery voltage.

Checking the ground terminal 

• Check the ground cable between the electronic throttle module (ETM) and the ground terminal on the engine. Check for an open-circuit
• Check the ground terminal for the electronic throttle module (ETM). Check for contact resistance and oxidation.

Checking the connectors 

• Check the connector for the electronic throttle module (ETM). Check for contact resistance and oxidation. Remedy if necessary. Check for any damage.

Remedy as necessary.

Other information 

• The power supply for the electronic throttle module (ETM) is from the fuse in the fusebox in the engine compartment via the system relay
• The ground terminal for the electronic throttle module (ETM) is on the front of the cylinder block above the starter motor
• To access the connector in the electronic throttle module (ETM) for B52x4T engines, see Throttle body (electronic throttle module (ETM)), replacing . To access the connector in the electronic throttle module (ETM) for B6304S and B6284T engines, see Throttle body (electronic throttle module (ETM)), replacing
• See Checking wiring and terminals. Permanent fault .

• For 6 cylinder turbocharged engines:
  • For 6 cylinder turbocharged engines -2001, see Location of components
  • For 6 cylinder turbocharged engines 2002, see Location of components, engine compartment
  • For 6 cylinder turbocharged engines 2003-, see Location of components, engine compartment .
• For engine B6304S:
  • For 6 cylinder naturally aspirated engines -2001, see Location of components
  • For 6 cylinder naturally aspirated engines 2002, see Location of components, engine compartment
  • For 6 cylinder naturally aspirated engines 2003-, see Location of components, engine compartment .
• For information about signals on 5-cylinder naturally aspirated engines, see: Signal specification
• For information about signals on 5-cylinder turbocharged engines, see: Signal specification

Was a fault detected? 

• YES 

  Refer to Checking the function of the electronic throttle module (ETM) 

• NO 

  Refer to Signal missing