Theft Deterrent System (For Sedan) Ecu Power Source Circuit

Vehicle Interior. Yaris. Ncp93, 131

Theft Deterrent Keyless Entry. Yaris. Ncp93, 131

INSPECTION PROCEDURE

INSPECT FUSE (ECU-B, DOME)

INSPECT THEFT WARNING ECU ASSEMBLY

CHECK HARNESS AND CONNECTOR (POWER SOURCE)

THEFT DETERRENT SYSTEM (for Sedan) - ECU Power Source Circuit

DESCRIPTION

This circuit provides power to operate the theft warning ECU.

WIRING DIAGRAM

Yaris. Ncp93, 131.Theft Deterrent Keyless Entry.Engine Immobiliser System (For Sedan).Theft Deterrent System (For Sedan) Ecu Power Source Circuit

INSPECTION PROCEDURE

1.INSPECT FUSE (ECU-B, DOME)

Remove the ECU-B fuse and DOME fuse from the engine room R/B.

Measure the resistance.
Standard resistance:
Below 1 Ω

Reinstall the fuses.

NG

REPLACE FUSE

OK

2.INSPECT THEFT WARNING ECU ASSEMBLY

Yaris. Ncp93, 131.Theft Deterrent Keyless Entry.Engine Immobiliser System (For Sedan).Theft Deterrent System (For Sedan) Ecu Power Source Circuit

Remove the theft warning ECU assembly without disconnecting the D26 connector.

Measure the voltage.
Standard voltage:
Tester Connection
Specified Condition
D26-11 (+B1) - D26-16 (E)
11 to 14 V
D26-13 (+B2) - D26-16 (E)
11 to 14 V

OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

NG

3.CHECK HARNESS AND CONNECTOR (POWER SOURCE)

Yaris. Ncp93, 131.Theft Deterrent Keyless Entry.Engine Immobiliser System (For Sedan).Theft Deterrent System (For Sedan) Ecu Power Source Circuit

Disconnect the D26 theft warning ECU connector.

Measure the voltage.
Standard voltage:
Tester Connection
Specified Condition
D26-11 (+B1) - Body ground
11 to 14 V
D26-13 (+B2) - Body ground
11 to 14 V

Measure the resistance.
Standard resistance:
Tester Connection
Specified Condition
D26-16 (E) - Body ground
Below 1 Ω

Reconnect the theft warning ECU connector.

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

REPLACE THEFT WARNING ECU ASSEMBLY (YARIS_NCP93 RM0000033J4009X.html)