Section 04 ENGINE MANAGEMENT (SDI)
Subsection 02 (DIAGNOSTIC PROCEDURE)
DIAGNOSTIC PROCEDURE
SERVICE TOOLS
Description Part Number Page
GRAY diagnostic key ............................................................
529 035 896 ......................................... 134
supply harness......................................................................
529 035 869 ......................................... 133
VCK (Vehicle Communication Kit).........................................
529 035 981 ......................................... 132
GENERAL
Here is the basic order suggested to diagnose a suspected engine management or fuel injection related
problem:
– Check the chart in TROUBLESHOOTING section to have an overview of problems and suggested so-
lutions.
– Check if the engine management system (EMS) pilot lamp lights up. If so, use the VCK (Vehicle Com-
munication Kit) and look for fault codes to diagnose the trouble.
– Check all fuses, relay(s), battery and capacitor (on so equipped models).
– Check fuel pressure.
– Check spark plugs condition.
– Check all connections of the wiring harness.
Refer to COMPONENT INSPECTION, REPLACEMENT AND ADJUSTMENT section for procedures.
mmr2004-125 127
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