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 MANUALSLEXUS2006RX 400H AWD V6-3.3L (3MZ-FE) HYBRIDREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGTESTING AND INSPECTIONPINOUT VALUES AND DIAGNOSTIC PARAMETERS
2006 Lexus RX 400h AWD V6-3.3L (3MZ-FE) Hybrid
Pinout Values and Diagnostic Parameters
2006 Lexus RX 400h AWD V6-3.3L (3MZ-FE) HybridSECTION Pinout Values and Diagnostic Parameters
TERMINALS OF ECU
1. AIR CONDITIONING AMPLIFIER
a. Waveform 1:
1. Measure the waveform between terminal BLW (A7-9) of the A/C amplifier assembly and body ground.
OK: Waveform appears as shown in the illustration.
HINT: Waveform cycle varies with the blower level.
2. HYBRID VEHICLE CONTROL ECU
a. Waveform A:
1. Measure the waveform between terminal CLK (H33-14) of the hybrid vehicle control ECU and body ground.
OK: Waveform appears as shown in the illustration.
HINT: Waveform cycle varies with the communication contents.
b. Waveform B:
1. Measure the waveform between terminal ITE (H33-15) of the hybrid vehicle control ECU and body ground.
OK: Waveform appears as shown in the illustration.
HINT: Waveform cycle varies with the communication contents.
c. Waveform C:
1. Measure the waveform between terminal ETI (H33-16) of the hybrid vehicle control ECU and body ground.
OK: Waveform appears as shown in the illustration.
HINT: Waveform cycle varies with the communication contents.
3. INTEGRATION CONTROL & PANEL ASSEMBLY
4. MULTI DISPLAY ASSEMBLY
Terminals Of Control Module/Pinouts (Part 1):
Terminals Of Control Module/Pinouts (Part 2):
1. AIR CONDITIONING AMPLIFIER
a. Waveform 1:
1. Measure the waveform between terminal BLW (A7-9) of the A/C amplifier assembly and body ground.
OK: Waveform appears as shown in the illustration.
HINT: Waveform cycle varies with the blower level.
Terminals Of Control Module/Pinouts (Part 1):
Terminals Of Control Module/Pinouts (Part 1):
2. HYBRID VEHICLE CONTROL ECU
a. Waveform A:
1. Measure the waveform between terminal CLK (H33-14) of the hybrid vehicle control ECU and body ground.
OK: Waveform appears as shown in the illustration.
HINT: Waveform cycle varies with the communication contents.
b. Waveform B:
1. Measure the waveform between terminal ITE (H33-15) of the hybrid vehicle control ECU and body ground.
OK: Waveform appears as shown in the illustration.
HINT: Waveform cycle varies with the communication contents.
c. Waveform C:
1. Measure the waveform between terminal ETI (H33-16) of the hybrid vehicle control ECU and body ground.
OK: Waveform appears as shown in the illustration.
HINT: Waveform cycle varies with the communication contents.
Terminals Of Control Module/Pinouts:
3. INTEGRATION CONTROL & PANEL ASSEMBLY
4. MULTI DISPLAY ASSEMBLY
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.