Engine General Information and Diagnosis: 1A-1
Power Head
Engine General Information and Diagnosis
Precautions
Precautions on Engine Diagnosis
Z9J0111100001
WARNING
!
To prevent any unexpected engine starting, perform the following before proceeding with any
CRANKING tests.
• When performing tests not related to fuel injector operation:
– Disconnect all fuel injector wire connectors.
• When performing tests related to fuel injector operation:
– Relieve the fuel pressure in the fuel lines. Refer to “Fuel Pressure Relief Procedure” in Section 1G
(Page 1G-15).
– Disconnect the high pressure fuel pump wire connector located on the fuel vapor separator.
CAUTION
• Always turn the ignition switch “OFF” and disconnect the battery cables when wires are being
disconnected or connected.
• Hold and pull the connectors when disconnecting. Do not pull the wires.
NOTE
• To troubleshoot the ECM, and the engine control system, consisting of sensors and actuators, use
the Suzuki Diagnostic System.
• The self-diagnostic codes memory in the ECM will remain even if the battery is disconnected.
• Each electrical circuit is affected by battery voltage, always use a full-charged battery.
• Make sure all ground points have good electrical contact.
• Make sure all wires / cables are securely connected.
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