P1011,P1012
Symptom: The engine runs on only five cylinders
Injector 1, output from control module low/high,
no continuity or shorting to ground/batt+
Fault symptom
The engine runs on only five cylinders
Condition
No continuity or shorting to ground/B+ in the circuit to pin
17.
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Note
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In connection with these diagnostic trouble codes there will
probably also be a trouble code for incorrect fuel-air mixture.
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1.
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Unplug the connector from the
injector.
With the ignition switch in the Drive position, check
whether battery voltage is present across pin 87 of the main relay and
pin 1 of the injector connector.
If it is not, check the wiring between the valve and the relay.
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2.
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Measure the resistance across pins 1 and 2 of the injector. The
correct resistance is 15.9 ohms.
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3.
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Take a reading across pins 1 and 2 of the injector connector. With
the ignition in the Drive position (engine switched off), there should
be no current or pulses across these pins.
Then start the engine and check that a reading of about 0.4 V is now obtained. If a
reading of about 0.4 V is obtained across pins 1
and 2, proceed to point 6.
If it is not, continue with the next point.
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4.
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Check the wiring between the MOTRONIC control module and the injector
for continuity/shorting.
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5.
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If possible, drive the car to see whether any fault symptoms are still
present. If they are, turn to
for further diagnostic
instructions.
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