Test 6 DME Control Unit and Power Supply

TEST 6 DME CONTROL UNIT AND POWER SUPPLY








- Check code number and manufacturing date of DME control unit.
- Check power supply.
- Pull off relay 2 and bridge terminals 87 and 30 with a piece of wire.
- This supplies power to the control unit.
- Check activation for relay 2:
- Turn on ignition.
- Terminals 85 (-) and 86 (+) should have voltage (approx. 12 V)
- If necessary, check ground point and plug connection (near DME control unit).
- Pull off plug on control unit and connect universal adaptor with (35-pin) test lead.
- Car wire harness plugs remain connected.
- Turn on ignition.
- Check voltage on pins, e.g. on connections 17 (--) and 35 (+).
- If test results indicate the necessity to replace the control unit, first make the periphery test with an universal adapter.

Test 6a IGNITION TIMING

- Check ignition timing
If incorrect check code number and manufacturing date on DME control unit
- Replace DME control unit