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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 DIAGNOSISHEATING AND AIR CONDITIONINGTESTING 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
HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM: TERMINALS OF ECU
1. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY
(a) Disconnect the E36, E35 and z34 air conditioning amplifier connectors.
(b) Measure the voltage and resistance according to the value(s) in the table below.
* If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the E36, E35 and z34 air conditioning amplifier connectors.
(d) Measure the voltage according to the value(s) in the table below.
* If the result is not as specified, the air conditioning amplifier assembly may have a malfunction.
(e) Using an oscilloscope, check waveform 1.
A/C Compressor Lock Sensor Signal
HINT
When the rear blower level is increased, the duty ratio changes accordingly.
(f) Using an oscilloscope, check waveform 2.
Blower Motor Control Signal
HINT
When the blower level is increased, the duty ratio changes accordingly.
(g) Using an oscilloscope, check waveform 3.
Rear Blower Motor Control Signal
HINT
When the rear blower level is increased, the duty ratio changes accordingly.
2. CHECK AIR CONDITIONING CONTROL ASSEMBLY (w/o Navigation System)
(a) Disconnect the F10 air conditioning control assembly connector.
(b) Measure the resistance and voltage according to the value(s) in the table below.
* If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the F10 air conditioning control assembly connector.
(d) Measure the resistance and voltage according to the value(s) in the table below.
* If the result is not as specified, the air conditioning control assembly may have a malfunction.
3. CHECK DISPLAY AND NAVIGATION MODULE DISPLAY (w/ Navigation System)
(a) Disconnect the F47 display and navigation module display connector.
(b) Measure the resistance and voltage according to the value(s) in the table below.
* If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the F47 display and navigation module display connector.
(d) Measure the resistance and voltage according to the value(s) in the table below.
* If the result is not as specified, the display and navigation module display may have a malfunction.
4. CHECK NO. 2 AIR CONDITIONING CONTROL ASSEMBLY
(a) Disconnect the E55 switch connector.
(b) Measure the resistance and voltage according to the value(s) in the table below.
If the result is not as specified, there may be a malfunction on the wire harness side.
5. CHECK MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)
(a) Disconnect the 2A, 2B, 2D and E3 ECU connectors.
(b) Measure the voltage and resistance according to the value(s) in the table below.
If the result is not as specified, there may be a malfunction in the wire harness.
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.