Ford Corsar Repair Manual page 216

TROUBLE DIAGNOSES
DIAGNOSTIC PROCEDURE 10
-
CODE 11
-
ENGINE SPEED SENSOR (DISTRIBUTOR).
ECM terminals 7 and 34 are the distributor signal outputs.
It is a square wave signal, and the signal must be present for
the ECM, to issue spark and fuel pulses.
Code
11
is set if the engine is cranked but no distributor signal
is received by the ECM.
lgnition off, clear codes.
Connect diagnostic plug.
Crank engine.
Leave key "on".
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Connect a voltmeter across pins 7 and 34 of ECM.
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l
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Set voltmeter to 2 volt W C " range.
Code 11
The voltage should read more than 0.7 volts AC whilst
cranking and normally reads 1.4 volts AC.
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No Code 1 1
Possibly intermittent.
Check for poor electrical
connection.
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Voltage
>
0.7 volts.
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Check connector and terminals
/
7,34andgatECM.
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Disconnect connector at distributor.
Set voltmeter to 20 volt "DC" scale.
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If ok replace ECM.
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Ignition on.
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Read voltage at pin 9 of ECM, it should read
>
11 volts.
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Voltage
>
11 Volts.
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Voltage
<
11 volts.
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Supply voltage to engine
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speed. Sensor ok.
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Check circuit AN22 for short
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Circuit if ok replace ECM.
Check circuit AN22 for
open circuit, if ok
replace sensor in
distributor.
DISTRIBUTOR ASSEMBLY
HALL SENSOR
ENGINE SPEED