Autodata - Diagnostic Trouble Codes Fault locations and probable causes - 2004 edition

I
Model: 80 1,9 TDI (-06193) 100 2,5 TDI
Year: 1990-94
Engine code:
IT, 12, AAT, ABP
System: Bosch EDC 1.2.3 Bosch EDC 1.2.4
Bosch EDC 1.2.6 Bosch EDC 1.2.9
Engine management
80 - in underbonnet fuseboxlrelay plate 100 1991 * - in underbonnet relay plate
100 4991 - under fascia, driver's side
General information
Refer to the front of this manual for general test conditions,
terminology, detailed descriptions of wiring faults and a
general trouble shooter for electrical and mechanical faults.
Trouble codes are displayed by the malfunction indicator
lamp (MIL).
The ECM fault memory can also be checked and erased
using diagnostic equipment connected to the data link
connector (DLC).
Self-diagnosis using flash type trouble codes may not
display all available diagnostic information.
Accessing
Ensure ignition switched OFF.
Bridge black data link connector (DLC) terminal 1 rn [A] and
brown data link connector (DLC) terminal 1 rn [B] with a
switched lead - contacts normally open.
Start engine. Allow to idle.
NOTE: If engine does not start: Crank engine for 6 seconds.
Leave ignition switched ON.
Operate switch for 4 seconds minimum.
Release switch. Check that MIL flashes.
Count MIL flashes. Note trouble code.
Each trouble code consists of four groups of one to four
flashes.
A 2,5 second pause separates each trouble code group [A].
Repeat switch operation. Note trouble codes. Compare with
trouble code table.
NOTE: Maximum of 5 trouble codes can be stored by memory at
one time.
End of test sequence indicated by trouble code 0000
(long flashes).
Switch ignition OFF. Rectify faults as necessary.
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