15-14
1. Diagnosis Procedure
• Perform the inspection in accordance with the following flowchart.
2. Diagnostic Precautions
• Before measuring voltage, check the battery for charged condition and specific gravity. If system inspection is per-
formed with the battery uncharged or reduced in specific gravity, accurate measurements cannot be achieved.
• Before disconnecting battery cables, harnesses and connectors, set the starter switch to LOCK or OFF, then allow
at least 20 seconds.
• To avoid having electrical parts damaged, set the starter switch and lighting switch to LOCK or OFF before recon-
necting battery cables, harnesses and connectors.
• When performing measurement with the tester, handle the test bar carefully so that it does not damage internal
circuit and other electrical parts of the electronic control unit to result in a short-circuit failure between terminals in
connector or between connector and car body
.
• Re
sistance is affected by temperature. Determine the necessity of resistance measurement following given tem-
perature specification as a guide. Otherwise, use normal temperature (10 to 35°C) as the measuring condition.
Vehicle in service shop
Read all (past and present) diagnosis codes by Multi-Use Tester. (See Gr00.)
Warning lamp lit
Was able to identify the fault?
Response to transient fault
(See Gr00.)
Perform inspection based on diagnosis codes. (See later section.)
Rectify or replace with new parts.
Clear stored diagnosis code. (See Gr00.)
Read diagnosis code(s) by Multi-Use Tester. (See Gr00.)
Code issued
End of inspection
Tes t d r i v e
NO
YES
No code issued
TURBOCHARGER CONTROL SYSTEM
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