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

Engine management
I
~~~
A B A C A B A B A B A
D
Except 4A-GE 1985-90 - with manifold absolute pressure
(MAP) sensor
Normal mode
Switch ignition ON.
Bridge data link connector (DLC) terminals El and TEI (T).
+1994: 0. 19944: 0.
If no trouble codes are stored, the lamp will flash twice per
second H.
Each trouble code consists of two groups of one or more
flashes rn [A].
Warning lamp flash duration: 0,5 second fl [B].
A 0,5 second pause separates each flash rn [C].
A 1,5 second pause separates each trouble code group
[Dl.
A 2,5 second pause separates each trouble code rn [El.
For example: Two 0,5 second flashes - 1,5 second pause -
one 0,5 second flash. Trouble code 21 displayed fl -
heated oxygen sensor (H02S).
Trouble codes are repeated 4,5 seconds after last trouble
code.
Count MIL flashes. Note trouble codes. Compare with
trouble code table.
Remove bridge wire.
Switch ignition OFF.
Rectify faults as necessary.
Test mode 1992 +
Switch ignition OFF.
Bridge data link connector (DLC) terminals El and TE2.
+I 994: 0. 1994 +: 0.
Switch ignition ON.
Ensure malfunction indicator lamp (MIL) flashes four times
per second.
Start engine.
Drive vehicle at over 6 mph (10 kmlh) to meet conditions of
customer complaint.
Stop vehicle. Do not switch ignition OFF.
With data link connector (DLC) terminals El and TE2
bridged, bridge terminals El and TEI 0.
Count MIL flashes. Note trouble codes. Compare with
trouble code table.
Switch ignition OFF.
Remove bridge wires.
Rectify faults as necessary.
NOTE: Codes 42 and 43 may be produced if this procedure is
NOT carried out correctly. Code 51 will be produced
during this procedure and can be ignored.