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's�. If the fuse is blown, check the circuit after the fuse. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault
- Check fuses 12, 17 and 18 in the integrated relay / fusebox in the engine compartment. If the fuse is blown, check the circuit after the fuse. Check 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 with the ignition on or off
- Remedy as necessary.

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

Other information
- 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
- To access or replace the relay or fuse, see the inside of the cover on the engine compartment relay/fusebox.









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 - Exit fault-tracing

No - Attempt New Test

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

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