Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA2011LANDCRUISER V8-5.7L (3UR-FE)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTESTING AND INSPECTIONPINOUT VALUES AND DIAGNOSTIC PARAMETERS
2011 Toyota Landcruiser V8-5.7L (3UR-FE)
Pinout Values and Diagnostic Parameters
2011 Toyota Landcruiser V8-5.7L (3UR-FE)SECTION Pinout Values and Diagnostic Parameters
3UR-FE ENGINE CONTROL: SFI SYSTEM: TERMINALS OF ECM
1. CHECK ECM
HINT
The standard normal voltage between each pair of ECM terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of checks should be compared with the standard normal voltage for that pair of terminals, displayed in the Specified Condition column. The illustration above can be used as a reference to identify the ECM terminal locations.
HINT
*: The ECM terminal voltage is constant regardless of the output voltage from the sensor.
(a) WAVEFORM 1:
Camshaft Oil Control Valve (OCV)
(b) WAVEFORM 2:
A/F Sensor Signal
HINT
The wavelength varies in accordance with the engine operating condition.
(c) WAVEFORM 3:
Heated Oxygen Sensor
HINT
In the Data List, item O2S B1S2 or O2S B2S2 shows the ECM input values from the heated oxygen sensor.
(d) WAVEFORM 4:
Injector No. 1 (to No. 8) Injection Signal
HINT
The wavelength becomes shorter as the engine speed increases.
(e) WAVEFORM 5:
Knock Sensor
HINT
* The wavelength becomes shorter as the engine speed increases.
* The waveforms and amplitudes displayed differ slightly depending on the vehicle.
(f) WAVEFORM 6:
Crankshaft Position Sensor and VVT Sensor for Intake Side
HINT
The wavelength becomes shorter as engine speed increases.
(g) WAVEFORM 7:
Igniter IGT Signal (from ECM to Igniter) and Igniter IGF Signal (from Igniter to ECM)
HINT
The wavelength becomes shorter as engine speed increases.
(h) WAVEFORM 8:
Purge VSV
HINT
If the waveform is not similar to the illustration, check the waveform again after idling for 10 minutes or more.
(i) WAVEFORM 9:
Vehicle Speed Signal
HINT
The wavelength becomes shorter as the vehicle speed increases.
(j) WAVEFORM 10:
Throttle Actuator Positive Terminal
HINT
The duty ratio varies depending on the throttle actuator operation.
(k) WAVEFORM 11:
Throttle Actuator Negative Terminal
HINT
The duty ratio varies depending on the throttle actuator operation.
(l) WAVEFORM 12:
Engine Speed Signal
HINT
The wavelength becomes shorter as the engine speed increases.
(m) WAVEFORM 13:
CAN Communication Signal (Reference)
HINT
The waveform varies depending on the CAN communication signal.
(n) WAVEFORM 14:
CAN Communication Signal (Reference)
HINT
The waveform varies depending on the CAN communication signal.
(o) WAVEFORM 15:
Crankshaft Position Sensor and Camshaft Position Sensor
HINT
The wavelength becomes shorter as the engine speed increases.
(p) WAVEFORM 16:
Terminal DI of Air Injection Control Driver
HINT
The wavelength changes when the air injection control driver detects malfunctions in the air injection system P0412.
(q) WAVEFORM 17:
Crankshaft Position Sensor and VVT Sensor for Exhaust Side
HINT
The wavelength becomes shorter as engine speed increases.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.