Sienna FWD V6-3.5L (2GR-FE) (2009)
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Alarm Module: Component Tests and General Diagnostics
THEFT DETERRENT: THEFT DETERRENT SYSTEM: ECU Power Source Circuit
ECU Power Source Circuit
DESCRIPTION
This circuit provides power to operate the theft deterrent (warning) ECU.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1. INSPECT FUSE (ECU-B)
(a) Remove the ECU-B fuse from the engine room J/B.
(b) Measure the resistance.
Standard resistance:
Below 1 Ohms
NG -- REPLACE FUSE
OK -- Continue to next step.
2. CHECK INSTRUMENT PANEL J/B ASSEMBLY (POWER SOURCE)
(a) Disconnect the 1C J/B connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage: