Checking Power and Ground Terminal - Throttle Unit

Checking The Power Supply And Ground Terminals For The Throttle Unit







Checking the power supply
- Check the fuse for power supply to the electronic throttle unit. If the fuse is blown, check the circuit after the fuse. Check for a short-circuit to ground
- Check power supply to throttle unit #6. Voltage should be approximately battery voltage.

Checking the ground terminal
- Check the ground lead between throttle unit terminal #5 and engine ground terminal ETM 31/91. Check for an open-circuit
- Check the ground terminal for the throttle unit.
Check for contact resistance and oxidation.

Remedy as necessary

Other information
- Ground terminal electronic throttle module (ETM) 31/91 for the throttle unit is located on the front of the cylinder block above the starter motor
- For information about signals on 5 cylinder engines, see Signal Specification (under Diagnostic Parameters and Pinout Values)
- For information about signals on 6 cylinder engines, see Signal Specification (under Diagnostic Parameters and Pinout Values)
- For information about the fuses, see the relevant wiring diagram
- Checking wiring and terminals.

Was a fault detected?

YES: Refer to Trouble Code Descriptions. Diagnostic Trouble Code Descriptions
NO: Continue with Test (Fault-Tracing Information - Permanent Fault). Fault-Tracing Information - Permanent Fault