EG-7
TROUBLE DIAGNOSIS
TROUBLE DIAGNOSIS
ECM Trouble Diagnosis
CAUTION:
• The following trouble diagnosis procedures are designed
to identify the trouble causes efficiently. When performing
diagnoses, carefully observe the following instructions.
• Before starting a trouble diagnosis, carefully read and
understand the contents in "Basic Inspection", "Diagnosis
Chart by Symptom" and "Trouble Diagnosis Flowchart".
• After the repair work, always verify that the trouble is
eliminated.
• For the locations of the parts and harness connectors,
refer to "Component Parts Location" in the relevant
section.
• To perform a simple inspection, utilize the circuit diagrams.
To inspect the circuit for continuity in details including the
sub-harnesses, identify the relevant connectors and
harness layouts referring to the "Wiring Diagrams".
• Before inspecting a circuit for continuity, always turn the
ignition switch to OFF.
• Before measuring voltage at a connector, always measure
the battery voltage.
• After finishing diagnoses or inspections, always ensure
that all removed harness connectors are reconnected
correctly.
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