Checking Power and Ground Terminal - Throttle Unit

CHECKING THROTTLE UNIT POWER AND GROUND TERMINAl





Checking power supply
- Check fuse 11 B/2. If the fuse is blown check circuit after the fuse for a short-circuit to ground according to [1][2]Checking Wiring and Terminals. Permanent Fault

- Check power supply to throttle unit # 6. Voltage should be approximately battery voltage.

Checking ground terminal
- Check ground lead between throttle unit # 5 and engine ground terminal ETM 31/91 for an open-circuit according to [1][2]Checking Wiring and Terminals. Permanent Fault

- Check throttle unit ground terminal for contact resistance and oxidation according to [1][2]Checking Wiring and Terminals. Permanent Fault

Remedy as necessary

Other information
- Power supply to the electronic throttle module # 6 is from fuse 11 B/2 via the system relay.
- 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, see Diagnostic Parameters and Pinout Values. Signal Description, ME7, B5XX4T
- For information about circuit see the relevant wiring diagram.

Was a fault detected?
Yes - Testing Complete
No - Continue below.


Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed. Exit fault tracing for this diagnostic trouble code (DTC) or make another attempt.