Checking Power And Ground Terminals

Checking power and ground terminals

Checking power supply and ground terminal, engine control module (ECM)

Checking the power supply
- Check fuse 11 the integrated relay / fusebox in the passenger compartment´. If the fuse is blown, check the circuit after the fuse for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault
- Check fuse 13 the integrated relay / fusebox in the engine compartment. If the fuse is blown, check the circuit after the fuse for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault
- Check the power supply to terminal 29. The voltage should be approximately battery voltage with the ignition on
- Check the power supply to terminal 66. The voltage should be approximately battery voltage for 2 seconds after the ignition is switched on
- Check the power supply to terminal 30. The voltage should be approximately battery voltage for 2 seconds after the ignition is switched on
- Remedy as necessary.

Checking the ground terminal
- Check the ground lead at engine control module (ECM) terminals 3, 28, 33 and 67 for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault
- Check the ground terminal on the engine control module (ECM) for contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.
Remedy as necessary

Other information
- For information about signals, see Signal specification EMS2000
- To connect the breakout box, see Connecting the breakout box. EMS 2000 Connecting The Breakout Box. EMS 2000
- For further information about the circuit, see the relevant wiring diagram.













Was a fault detected?

Yes - FAULT FOUND

No - Fault-tracing information

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Fault-tracing information




Information

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.

Do you want to exit fault-tracing?

Yes - FAULT-TRACING FAILED

No - Attempt New Test

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Attempt New Test - Checking power supply and ground terminal, engine control module (ECM)

FAULT-TRACING FAILED - FAULT-TRACING FAILED

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