Section 05 ENGINE MANAGEMENT
Subsection 03 (DIAGNOSTIC PROCEDURES)
DIAGNOSTIC PROCEDURES
GENERAL
Here is the basic order suggested to diagnose a
suspected engine management or fuel injection
related problem:
– Check all fuses.
– Check fuel rail pressure.
– Check spark plugs condition.
– Check fuel pump pressure.
– Check all connections of the wiring harness.
– Refer to COMPONENT INSPECTION AND AD-
JUSTMENT section for procedures.
Terminology
Some documents or softwares use technical
terms that may be different from the one used in
this manual. The following table will help to find
the equivalence.
TERMS USED
IN THIS MANUAL
TERMS USED
IN OTHER
DOCUMENTS/
SOFTWARES
ECM ECU (Engine
Control Unit of Engine
Control Module)
ECM (Engine control
module)
MAPS (Manifold Air
Pressure Sensor)
APS (Air Pressure
Sensor) or (Atmospheric
Pressure Sensor)
MATS (Manifold Air
Temperature Sensor)
ATS (Air Temperature
Sensor) or (Intake
manifold Temperature
Sensor)
Communication link CAN
CTS (Coolant
Temperature Sensor)
WTS (Water
Temperature Sensor)
TOPS valve (Tip-Over
Protection System)
Blow-by valve
Idle bypass valve - DLA (Digital Linear
Actuator)
-Idleactuator
- Idle valve
OSPS (Oil Separator
Pressure Switch)
OTPS (Oil Tank Pressure
Switch)
DESS tether cord
Key
VCM (Vehicle Control
Module)
VMS (Vehicle
Management System)
Te m pla te 209
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