Toyota 2GR-FE Manual page 951

Wire Harness Side:
OK
3
CHECK MAIN BODY ECU OPERATION
OK
END (MAIN BODY ECU DEFECTIVE)
2GR-FE STARTING – SMART KEY SYSTEM
IR
Main Body ECU
LIN1
(b) Measure the resistance according to the value(s) in the
table below.
Standard resistance
Tester Connection
(Symbols)
IR-9 (LIN1) - E58-10
(LIN)
IR-9 (LIN1) or E58-10
(LIN) - Body ground
NG
(a) After replacing the main body ECU with a normally
functioning ECU, check that the engine starts (See page
ST-30).
OK:
Engine can start normally.
NG
E58
Certification ECU
LIN
Condition
Always
Always
REPAIR OR REPLACE HARNESS OR
CONNECTOR
REPLACE CERTIFICATION ECU
ST–89
B137998E01
Specified Condition
Below 1 Ω
10 kΩ or higher
ST