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.
2006 Lexus RX 330 AWDFACTORY OEM SERVICE PROCEDURE
Terminals Of ECM
HINT:
Each ECM terminal's standard voltage is shown in the table below. In the table, first follow the information under "Condition". Next look under "Symbols (Terminal No.)" for the terminals to be inspected. The standard voltage between the terminals is shown under "Specific Condition". Use the illustration above as a reference for the ECM terminals.
TERMINAL SPECIFICATION CHART
| Symbols (Terminal No.) | Wiring 0Color | Terminal Description | Condition | STD Voltage (V) |
|---|---|---|---|---|
| BATT (E5-3) - E1 (E7-1) | B - BR | Battery (for measuring the battery voltage and for the ECM memory) | Always | 9 to 14 |
| +BM (E6-6) - E1 (E7-1) | LG - BR | Power source of throttle motor | Always | 9 to 14 |
| IGSW (E5-9) - E1 (E7-1) | G - BR | Ignition switch | IG switch ON | 9 to 14 |
| +B (E5-1) - E1 (E7-1) | L-B - BR | Power source of ECM | IG switch ON | 9 to 14 |
| +B2 (E5-2) - E1 (E7-1) | L-B - BR | Power source of ECM | IG switch ON | 9 to 14 |
| OC1+ (E7-16) - OC1- (E7-15) | G-W - G-R | Camshaft timing oil control valve (OCV) | IG switch ON | Pulse generation (see DTC P0010 CAMSHAFT POSITION "A" ACTUATOR CIRCUIT (BANK 1): DTC P0020 CAMSHAFT POSITION "A" Actuator Circuit (Bank 2) ) |
| OC2+ (E7-14) - OC2- (E7-13) | L-R - G-B | Camshaft timing oil control valve (OCV) | IG switch ON | Pulse generation (see DTC P0010 CAMSHAFT POSITION "A" ACTUATOR CIRCUIT (BANK 1): DTC P0020 CAMSHAFT POSITION "A" Actuator Circuit (Bank 2) ) |
| MREL (E5-8) - E1 (E7-1) | LG - BR | EFI relay | IG switch ON | 9 to 14 |
| VC (E8-18) - E2 (E8-28) | Y - BR | Power source of sensor (a specific voltage) | IG switch ON | 4.5 to 5.5 |
| VG (E8-30) - E2G (E8-29) | R - L-W | Mass air flow sensor | Idling, shift lever position P or N position, A/C switch OFF | 0.5 to 3.0 |
| THA (E8-20) - E2 (E8-28) | L-B - BR | Intake air temperature sensor | Idling, Intake air temp. 20°C (68°F) | 0.5 to 3.4 |
| THW (E8-19) - E2 (E8-28) | G-B - BR | Engine coolant temperature sensor | Idling, Engine coolant temp. 80°C (176°F) | 0.2 to 1.0 |
| VTA1 (E8-21) - E2 (E8-28) | R-W - BR | Throttle position sensor (for the engine control) | IG switch ON, Accelerator pedal released | 0.5 to 1.2 |
| VTA1 (E8-21) - E2 (E8-28) | R-W - BR | Throttle position sensor (for the engine control) | IG switch ON, Accelerator pedal depressed | 3.2 to 4.8 |
| VTA2 (E8-31) - E2 (E8-28) | B-R - BR | Throttle position sensor (for the sensor malfunction detection) | IG switch ON, Accelerator pedal released | 2.1 to 3.1 |
| VTA2 (E8-31) - E2 (E8-28) | B-R - BR | Throttle position sensor (for the sensor malfunction detection) | IG switch ON, Accelerator pedal depressed | 4.5 to 5.5 |
| VPA (E5-22) - EPA (E5-28) | W - V | Accelerator pedal position sensor (for the engine control) | IG switch ON, Accelerator pedal released | 0.5 to 1.1 |
| VPA (E5-22) - EPA (E4-28) | W - V | Accelerator pedal position sensor (for the engine control) | IG switch ON, Accelerator pedal depressed | 2.6 to 4.5 |
| VPA2 (E5-23) - EPA2 (E5-29) | R - O | Accelerator pedal position sensor (for the sensor malfunction detection) | IG switch ON, Accelerator pedal released | 1.2 to 2.0 |
| VPA2 (E5-23) - EPA2 (E5-29) | R - O | Accelerator pedal position sensor (for the sensor malfunction detection) | IG switch ON, Accelerator pedal depressed | 3.4 to 5.3 |
| VCPA (E5-26) - EPA (E5-28) | B - V | Power source of accelerator pedal position sensor (for VPA) | IG switch ON | 4.5 to 5.5 |
| VCP2 (E5-27) - EPA2 (E5-29) | SB - O | Power source of accelerator pedal position sensor (for VPA2) | IG switch ON | 4.5 to 5.5 |
| HA1A (E9-5) - E04 (E9-7) HA2A (E9-4) - E05 (E9-6) |
B-W - W-B R-W - W-B A/F |
sensor heater | Idling | Below 3.0 |
| HA1A (E9-5) - E04 (E9-7) HA2A (E9-4) - E05 (E9-6) |
B-W - W-B R-W - W-B |
A/F sensor heater | IG switch ON | 9 to 14 |
| A1A+ (E9-22) - E1 (E7-1) | BR - BR | A/F sensor | IG switch ON | 3.0 to 3.6 |
| A2A+ (E9-23) - E1 (E7-1) | P - BR | A/F sensor | IG switch ON | 3.0 to 3.6 |
| A1A- (E9-30) - E1 (E7-1) | Y- BR | A/F sensor | IG switch ON | 2.7 to 3.3 |
| A2A- (E9-31) - E1 (E7-1) | L - BR | A/F sensor | IG switch ON | 2.7 to 3.3 |
| HT1B (E9-25) - E2 (E8-28) HT2B (E9-33) - E2 (E8-28) |
R-Y - BR W-L - BR |
Heated oxygen sensor heater | Idling | Below 3.0 |
| HT1B (E9-25) - E2 (E8-28) HT2B (E9-33) - E2 (E8-28) |
R-Y - BR W-L - BR |
Heated oxygen sensor heater | IG switch ON | 9 to 14 |
| OX1B (E9-21) - E2 (E8-28) OX2B (E9-29) - E2 (E8-28) |
W - BR B - BR |
Heated oxygen sensor | Maintain engine speed at 2,500 rpm for 2 minutes after warming up | Pulse generation |
| #10 (E8-1) - E01 (E8-7) #20 (E8-2) - E01 (E8-7) #30 (E8-3) - E01 (E8-7) #40 (E8-4) - E01 (E8-7) #50 (E8-5) - E01 (E8-7) #60 (E9-3) - E01 (E8-7) |
L - W-B Y - W-B B - W-B W - W-B B-W - W-B G - W-B |
Injector | IG switch ON | 9 to 14 |
| #10 (E8-1) - E01 (E8-7) #20 (E8-2) - E01 (E8-7) #30 (E8-3) - E01 (E8-7) #40 (E8-4) - E01 (E8-7) #50 (E8-5) - E01 (E8-7) #60 (E9-3) - E01 (E8-7) |
L - W-B Y - W-B B - W-B W - W-B B-W - W-B G - W-B |
Injector | Idling | Pulse generation (See DTC P0300 Random / Multiple Cylinder Misfire Detected: DTC P0301 Cylinder 1 Misfire Detected: DTC P0302 Cylinder 2 Misfire Detected: DTC P0303 Cylinder 3 Misfire Detected: DTC P0304 Cylinder 4 Misfire Detected: DTC P0305 Cylinder 5 Misfire Detected: DTC P0306 Cylinder 6 Misfire Detected ) |
| KNK1 (E9-1) - EKNK (E9-28) | B - W | Knock sensor | Maintain engine speed at 4,000 rpm after warming up | Pulse generation (See DTC P0327 Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor): DTC P0328 Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor): DTC P0332 Knock Sensor 2 Circuit Low Input (Bank 2): DTC P0333 Knock Sensor 2 Circuit High Input (Bank 2) ) |
| KNK2 (E9-2) - EKN2 (E9-20) | R - G | Knock sensor | Maintain engine speed at 4,000 after warming up | Pulse generation (See DTC P0327 Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor): DTC P0328 Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor): DTC P0332 Knock Sensor 2 Circuit Low Input (Bank 2): DTC P0333 Knock Sensor 2 Circuit High Input (Bank 2) ) |
| VV1+ (E7-27) - NE- (E7-24) | B-W - G | Variable valve timing (VVT) sensor | Idling | Pulse generation (See DTC P0335 CRANKSHAFT POSITION SENSOR "A" CIRCUIT: DTC P0339 CRANKSHAFT POSITION SENSOR "A" Circuit Intermittent ) |
| VV2+ (E7-26) - NE- (E7-24) | L - G | Variable valve timing (VVT) sensor | Idling | Pulse generation (See DTC P0335 CRANKSHAFT POSITION SENSOR "A" CIRCUIT: DTC P0339 CRANKSHAFT POSITION SENSOR "A" Circuit Intermittent ) |
| NE+ (E7-25) - NE- (E7-24) | R - G | Crankshaft position sensor | Idling | Pulse generation (See DTC P0335 CRANKSHAFT POSITION SENSOR "A" CIRCUIT: DTC P0339 CRANKSHAFT POSITION SENSOR "A" Circuit Intermittent ) |
| IGT1 (E8-8) - E1 (E7-1) IGT2 (E8-9) - E1 (E7-1) IGT3 (E8-10) - E1 (E7-1) IGT4 (E8-11) - E1 (E7-1) IGT5 (E8-12) - E1 (E7-1) IGT6 (E8-13) - E1 (E7-1) |
R-L - BR P - BR Y-B - BR L-Y - BR G-Y - BR L-R - BR |
Ignition coil with igniter (ignition signal) | Idling | Pulse generation (See DTC P0351 IGNITION COIL "A" PRIMARY / SECONDARY CIRCUIT: DTC P0352 IGNITION COIL "B" PRIMARY / SECONDARY CIRCUIT: DTC P0353 IGNITION COIL "C" PRIMARY / SECONDARY CIRCUIT: DTC P0354 IGNITION COIL "D" PRIMARY / SECONDARY CIRCUIT: DTC P0355 IGNITION COIL "E" PRIMARY / SECONDARY CIRCUIT: DTC P0356 IGNITION COIL "F" Primary / Secondary Circuit ) |
| IGF1 (E8-24) - E1 (E7-1) | W-R - BR | Ignition coil igniter (ignition confirmation signal) | IG switch ON | 4.5 to 5.0 |
| IGF1 (E8-24) - E1 (E7-1) | W-R - BR | Ignition coil igniter (ignition confirmation signal) | Idling | Pulse generation (See DTC P0351 IGNITION COIL "A" PRIMARY / SECONDARY CIRCUIT: DTC P0352 IGNITION COIL "B" PRIMARY / SECONDARY CIRCUIT: DTC P0353 IGNITION COIL "C" PRIMARY / SECONDARY CIRCUIT: DTC P0354 IGNITION COIL "D" PRIMARY / SECONDARY CIRCUIT: DTC P0355 IGNITION COIL "E" PRIMARY / SECONDARY CIRCUIT: DTC P0356 IGNITION COIL "F" Primary / Secondary Circuit ) |
| PRG (E8-34) - E1 (E7-1) | G - BR | VSV for EVAP | IG switch ON | 9 to 14 |
| CCV (E8-27) - E1 (E7-1) | L - BR | VSV for CCV | IG switch ON | 9 to 14 |
| PTNK (E5-21) - E2 (E8-28) | V - BR | Vapor pressure sensor | Ignition switch ON | 2.9 to 3.7 |
| PTNK (E5-21) - E2 (E8-28) | V - BR | Vapor pressure sensor | Apply vacuum 4.0 kPa (30 mmHg, 1.18 in.Hg) | Below 0.5 |
| SPD (E6-17) - E1 (E7-1) | LG - BR | Speed signal from combination meter | IG switch ON, Rotate driving wheel slowly | Pulse generation (See DTC P0500 VEHICLE SPEED SENSOR "A": DTC P0503 VEHICLE SPEED SENSOR "A" Intermittent / Erratic / High ) |
| STA (E8-17) - E1 (E7-1) | B - BR | Starter signal | Shift lever position P or N, Ignition switch START | 9 to 14 |
| STP (E6-19) - E1 (E7-1) | B - BR | Stop light switch | Brake pedal is depressed | 7.5 to 14 |
| STP (E6-19) - E1 (E7-1) | B - BR | Stop light switch | Brake pedal is released | Below 1.5 |
| NSW (E8-16) - E1 (E7-1) | B-Y - BR | Park/neutral position switch | IG switch ON, Shift position in P, N | 0 to 3.0 |
| NSW (E8-16) - E1 (E7-1) | B-Y - BR | Park/neutral position switch | IG switch ON, Other shift position in P, N | 9 to 14 |
| M+ (E7-3) - ME01 (E7-4) M- (E7-2) - ME01 (E7-4) |
B - W-B W - W-B |
Throttle motor | Idling | Pulse generation |
| FC (E5-10) - E1 (E7-1) | O - BR | Fuel pump control | IG switch ON | 9 to 14 |
| W (E5-11) - E1 (E7-1) | BR - BR | MIL | IG switch ON | Below 3.0 |
| W (E5-11) - E1 (E7-1) | BR - BR | MIL | Idling | 9 to 14 |
| ELS (E5-12) - E1 (E7-1) | SB- BR | Electric load | Power outlet OFF | 0 to 1.5 |
| ELS (E5-12) - E1 (E7-1) | SB - BR | Electric load | Power outlet ON | 7.5 to 14 |
| TC (E5-20) - E1 (E7-1) | BR - BR | Terminal TC of DLC3 | IG switch ON | 9 to 14 |
| SIL (E5-18) - E1 (E7-1) | GR - BR | Terminal SIL of DLC3 | During charge gears | Pulse generation |
| TACH (E5-5) - E1 (E7-1) | W - BR | Engine speed | Idling | Pulse generation |
| AICV (E8-33) - E1 (E7-1) | W - BR | VSV for AICV | IG switch ON | 9 to 14 |
| ACIS (E8-15) - E1 (E7-1) | R-Y - BR | VSV for ACIS | IG switch ON | 9 to 14 |
| ACM (E7-6) - E1 (E7-1) | Y-G - BR | VSV for ACM | IG switch ON | 9 to 14 |
| ENG+ (E5-24) - ENG- (E5-30) | LG - L | Electric load (from skid control ECU) | Idling | Pulse generation |
| TRC+ (E5-25) - TRC- (E5-31) | Y - G | Electric load (from skid control ECU) | Idling | Pulse generation |
| PSW (E7-10) - E1 (E7-1) | R-W - BR | P/S pressure switch | IG switch ON | 9 to 14 |
Factory Service Tools
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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.
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