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Home >> Toyota >> 2008 >> Prius L4-1.5L (1NZ-FXE) Hybrid >> Repair and Diagnosis >> Body and Frame >> Locks >> Power Locks >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> Smart Key System >> Entry Functions Do Not Operate At All
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Entry Functions Do Not Operate At All








DOOR LOCK: SMART KEY SYSTEM: Entry Functions do not Operate at All

Entry Functions do not Operate at All

DESCRIPTION

When the entry functions do not operate at all, it is possible that the certification ECU is malfunctioning or that the wire harness leading to the certification ECU is short-circuited.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT FUSE (DOME)
(a) Remove the DOME fuse from the engine room junction block and relay block.
(b) Measure the resistance of the fuses.
Standard resistance:
Below 1 Ohms
NG -- REPLACE FUSE
OK -- Continue to next step.
2. CHECK WIRE HARNESS (CERTIFICATION ECU- BATTERY AND BODY GROUND)





(a) Disconnect the S11 ECU connector.
(b) Measure the voltage of the wire harness side connector.
Standard voltage:





(c) Measure the resistance of the wire harness side connector.
Standard resistance:





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- REPLACE CERTIFICATION ECU
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