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(03-12-248) Fault diagnosis assistance for diagnostic trouble codes caused by connectors H42-2 and H42-3

Symptom: Indicated diagnostic trouble codes and fault symptoms in accordance with the above list

TECHNICAL ADVICE - Quick information for your help
Bulletin Nbr: 03-12-248
Date: ........... Decenber 2003
Market: all
Fault diagnosis assistance for diagnostic trouble codes caused by connectors H42-2 and H42-3

Cars affected

Saab 9-3 (9440) M03 with all engine alternatives

Background

Diagnostic trouble codes in accordance with the following list can be generated despite the fault being located elsewhere than indicated by fault diagnosis. Usually pins are dislodged in connector H42-2 or H42-3.

For this reason H42-2 and H42-3 must be checked with respect to dislodged pins and other contact problems before normal fault diagnosis is performed.

Diagnostic trouble codes which can be indicated in each system respectively:

System Trionic 8: connector H42-2 PSG 16: connector H42-3 TCS/ESP: connector H42-2 and H42-3 CIM: connector H42-2 and H42-3
Fault symptom Fuel pump supply fault. CHECK ENGINE lamp electrical circuit fault
Diagnostic trouble codes P0451 P0452 P0453 P0460 P0461 P0462 P0463 P0498 P0499 P0628 P0629 P1451 P1452 P1453 P1492 P1493 P2121 P2122 P2123 P2126 P2127 P2128 P2138 P2537 P0123 P0223 P0462 P0463 P0504 P0615 P0616 P0617 P0650 P0652 P0653 P0698 P0699 P2135 C0161 C0855 B1383


Symptom description

Indicated diagnostic trouble codes and fault symptoms in accordance with the above list



Procedure

Jiggle the wiring harness at several points and in different directions to detect intermittent breaks and short circuits. In addition, check contacts, connectors and crimp connections for oxidation, dislodged pins and pin clamping force.

Carry out the procedure in accordance with the description in TSB248-2423.

If the fault remains, carry out normal fault diagnosis.

Component location, see illustrations.