Test Point 2 - Power Supply for DME Control Unit and Fuel Pump
TEST POINT 2 - DME 944 TurboPower Supply
A) DME and KLR Control Unit (V) (located behind passenger's foot support).
Note: Turn off ignition and then pull off control unit plug!
Plugs of control units are locked with a catch. First unlock this catch and then swing plug off of the control unit.
Connect voltmeter with help of test leads on term. 35 and 5 or 18 and 5 in second test on the DME control unit.
Connect term. 6 and 14 on KLR control unit.
Turn on ignition.
Display = battery voltage each time.
Turn off ignition. Check and connect DME plug!
No display, then check:
Disconnect 14-pin plug on engine.
Connect voltmeter on term. 3 and ground on receptacle end. Turn on ignition.
Display = battery voltage.
No display, leave test connections and check:
Pull off DME relay G 5. Bridge term. 30 and 87 in CEL socket.
Display = battery voltage.
Pull off plug of one fuel injector. Connect voltmeter with help of test leads on one plug contact and ground.
Display = battery voltage.
Turn off ignition. Connect all plugs!
B) Fuel Pump
Start engine - fuel pump should be running while starting.
If not, check:
Fuse no.34(15 A)
Pull off relay G 5.
Bridge term. 30 and 87 b in CEL socket.
Fuel pump should run. Check wiring diagram for electric wire routing.