Info

The CO reading must increase.

Note:

Do not conduct this test for any longer than required to detect a change in the CO reading of the exhaust tester.

If there is no change in the CO reading, check connection to LH control unit and LH control unit coding (see page 24 - 221),if necessary, replace control unit.

24 - 220 Testing Oxygen Sensor Operation

Printed in Germany

LH 2.3 CONTROL UNIT CODING, 87 MODELS ONWARD

Only one controlled unit is used. The appropriate characteristic can be called up by means of the coding plug on the rear of the control-unit holder.

Switching diagram

Type

R.o.W. without catalytic converter, manual transmission

R.o.W. without catalytic converter, automatic transmission

R.o.W. with catalytic converter and USA, manual transmission

R.o.W. with catalytic converter and USA, automatic transmission

Australia, manual transmission

Australia, automatic transmission

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