Certification ECU Power Source Circuit

DESCRIPTION

This is the power source circuit of the certification ECU.
The certification ECU controls the following:

1. Electrical key verification confirmation
   
2. Cabin and door oscillator control
   
3. Entry door LOCK / UNLOCK request to the main body ECU RH
   
4. Steering LOCK / UNLOCK request
   
5. Immobilizer SET / UNSET request to the ID code box
   

WIRING DIAGRAM

INSPECTION PROCEDURE

1. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)

1. Disconnect the P33 certification ECU connector.

2. Measure the voltage according to the value(s) in the table below.

   Standard voltage:

   Tester Connection (Symbols)	Condition	Specified Condition
   P33-1 (+B1) - Body ground	Always	10 to 14 V
   P33-18 (IG) - Body ground	Engine switch OFF	Below 1 V
   	Engine switch ON (IG)	10 to 14 V
   P33-19 (ACC) - Body ground	Engine switch OFF	Below 1 V
   	Engine switch ON (ACC)	10 to 14 V

3. Measure the resistance according to the value(s) in the table below.

   Standard resistance:

   Tester Connection (Symbols)	Condition	Specified Condition
   P33-17 (E) - Body ground	Always	Below 1 Ω

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK
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