ENGINE COMPRESSION
Check engine compression with engine at cranking speed with battery fully charged, engine at normal operating temperature, all spark plugs removed and throttle wide open.
| Application | Specification |
|---|
| Normal Compression Pressure |
| ES300 & RX300 | 218 psi (15.3 kg/cm 2 ) |
| GS300, IS300 & LX470 | 192 psi (13.5 kg/cm 2 ) |
| GS430 & LS430 | 178 psi (12.5 kg/cm 2 ) |
| Minimum Compression Pressure |
| ES300 & RX300 | 145 psi (10.2 kg/cm 2 ) |
| GS300 & IS300 | 156 psi (11.0 kg/cm 2 ) |
| GS430, LS430 & LX470 | 142 psi (10.0 kg/cm 2 ) |
| Maximum Variation Between Cylinders |
| Except ES300 & RX300 | 14 psi (1.0 kg/cm 2 ) |
| ES300 & RX300 | 15 psi (1.1 kg/cm 2 ) |
COMPRESSION SPECIFICATIONS
VALVE CLEARANCE
| Application | In. (mm) |
|---|
| Intake | .006-.010 (.15-.25) |
| Exhaust | .010-.014 (.25-.35) |
| (1) Adjust valve clearance with engine cold. |
| (1) | Adjust valve clearance with engine cold. |
VALVE CLEARANCE SPECIFICATIONS (1)
IGNITION COIL
| Application | Primary | Secondary |
|---|
| Except GS300 & IS300 | (1) | (1) |
| GS300 & IS300 |
| Cold (2) | .33-.52 | 8500-14,700 |
| Hot (3) | .42-.61 | 10,800-17,200 |
| (1) Ignition coil resistance is not available from manufacturer. (2) Cold is with temperature of 14-122°F (-10-50°C). (3) Hot is with temperature of 123-212°F (51-100°C). |
| (1) | Ignition coil resistance is not available from manufacturer. |
| (2) | Cold is with temperature of 14-122°F (-10-50°C). |
| (3) | Hot is with temperature of 123-212°F (51-100°C). |
IGNITION COIL RESISTANCE (OHMS)
CAMSHAFT POSITION SENSOR
| Application | Ohms |
|---|
| All Models |
| Cold (1) | 835-1400 |
| Hot (2) | 1060-1645 |
| (1) Cold is with temperature of 14-122°F (-10-50°C). (2) Hot is with temperature of 122-212°F (50-100°C). |
| (1) | Cold is with temperature of 14-122°F (-10-50°C). |
| (2) | Hot is with temperature of 122-212°F (50-100°C). |
CAMSHAFT POSITION SENSOR RESISTANCE
CRANKSHAFT POSITION SENSOR
| Application | Ohms |
|---|
| All Models |
| Cold (1) | 1630-2740 |
| Hot (2) | 2065-3225 |
| (1) Cold is with temperature of 14-122°F (-10-50°C). (2) Hot is with temperature of 122-212°F (50-100°C). |
| (1) | Cold is with temperature of 14-122°F (-10-50°C). |
| (2) | Hot is with temperature of 122-212°F (50-100°C). |
CRANKSHAFT POSITION SENSOR RESISTANCE
HIGH TENSION WIRE RESISTANCE
| Application | Maximum Ohms |
|---|
| ES300, GS430, LS430, LX470 & RX300 | (1) |
| GS300 & IS300 | 25,000 Per Wire |
| (1) Distributorless Ignition System (DIS) is used with ignition coil mounted on the spark plug. No high tension wires are used. |
| (1) | Distributorless Ignition System (DIS) is used with ignition coil mounted on the spark plug. No high tension wires are used. |
HIGH TENSION WIRE RESISTANCE
SPARK PLUGS
| Application | NGK No. | Denso No. |
|---|
| ES300, GS430, LS430, LX470 & RX300 | IFR6A11 | SK20R11 |
| GS300 & IS300 | — | SK16R-P11 |
| Application | Gap In. (mm) | Torque Ft. Lbs. (N.m) |
|---|
| All Models | .043 (1.10) | 13 (18) |
SPARK PLUG SPECIFICATIONS
FIRING ORDER
| Application | Firing Order |
|---|
| ES300 & RX300 (1) | (2) 1-2-3-4-5-6 |
| GS300 & IS300 (3) | 1-5-3-6-2-4 |
| GS430, LS430 & LX470 (1) | (4) 1-8-4-3-6-5-7-2 |
| (1) System uses a Distributorless Ignition System (DIS) with ignition coil for each cylinder. (2) Cylinder No. 1 is front cylinder on right side of engine when viewed from flywheel end of engine. Cylinder No. 2 is front cylinder on left side of engine when viewed from flywheel end of engine. Cylinders No. 1, 3 and 5 are on right side of engine. Cylinders No. 2, 4 and 6 are on left side of engine. (3) System uses a Distributorless Ignition System (DIS) with 3 ignition coils. Each coil fires 2 cylinders. Cylinders are paired as follows: No. 1-6, 2-5, and 3-4. (4) Cylinder No. 1 is front cylinder on left side of engine when viewed from flywheel end of engine. Cylinder No. 2 is front cylinder on right side of engine when viewed from flywheel end of engine. Cylinders No. 1, 3, 5 and 7 are on left side of engine. Cylinders No. 2, 4, 6 and 8 are on right side of engine. |
| (1) | System uses a Distributorless Ignition System (DIS) with ignition coil for each cylinder. |
| (2) | Cylinder No. 1 is front cylinder on right side of engine when viewed from flywheel end of engine. Cylinder No. 2 is front cylinder on left side of engine when viewed from flywheel end of engine. Cylinders No. 1, 3 and 5 are on right side of engine. Cylinders No. 2, 4 and 6 are on left side of engine. |
| (3) | System uses a Distributorless Ignition System (DIS) with 3 ignition coils. Each coil fires 2 cylinders. Cylinders are paired as follows: No. 1-6, 2-5, and 3-4. |
| (4) | Cylinder No. 1 is front cylinder on left side of engine when viewed from flywheel end of engine. Cylinder No. 2 is front cylinder on right side of engine when viewed from flywheel end of engine. Cylinders No. 1, 3, 5 and 7 are on left side of engine. Cylinders No. 2, 4, 6 and 8 are on right side of engine. |
IGNITION TIMING
| Application | (2) Base Timing | (3) ECM Controlled Timing |
|---|
| ES300 & RX300 | 8-12 | 10-25 |
| GS300 & IS300 | 8-12 | 6-16 |
| GS430 & LS430 | 8-12 | (4) |
| LX470 | 5-15 | (4) |
| (1) Check with engine at normal operating temperature, transmission/transaxle in Neutral, parking brake applied, and A/C and all accessories off. (2) With Jumper Wire (SST 09843-18020) installed between data link connector No. 1 terminals TE1 and E1 on ES300 and RX300 models, or terminals TC and E1 on all other models. (3) With jumper wire removed from data link connector No. 1. (4) Information is not available from manufacturer. |
| (1) | Check with engine at normal operating temperature, transmission/transaxle in Neutral, parking brake applied, and A/C and all accessories off. |
| (2) | With Jumper Wire (SST 09843-18020) installed between data link connector No. 1 terminals TE1 and E1 on ES300 and RX300 models, or terminals TC and E1 on all other models. |
| (3) | With jumper wire removed from data link connector No. 1. |
| (4) | Information is not available from manufacturer. |
IGNITION TIMING (DEGREES BTDC @ IDLE) (1)
FUEL PUMP
| Application | (1) Pressure psi (kg/cm 2 ) |
|---|
| Except LX470 | 44-50 (3.1-3.5) |
| LX470 | 38-44 (2.7-3.1) |
| (1) Check fuel pressure with engine off. Using scan tool connected to DLC3 under driver's side of dashboard, turn ignition on to activate fuel pump. If scan tool is not available, connect battery voltage to terminal No. 4, and ground terminal No. 5 on electric fuel pump. (Scheme 3) |
| (1) | Check fuel pressure with engine off. Using scan tool connected to DLC3 under driver's side of dashboard, turn ignition on to activate fuel pump. If scan tool is not available, connect battery voltage to terminal No. 4, and ground terminal No. 5 on electric fuel pump. (Scheme 3) |
Scheme 3
| Application | (1) Ohms @ 68°F (20°C) |
|---|
| All Models | .2-3.0 |
| (1) Measure resistance between fuel pump terminals No. 4 and 5. (Scheme 3) |
| (1) | Measure resistance between fuel pump terminals No. 4 and 5. (Scheme 3) |
FUEL INJECTOR RESISTANCE
| Application | Ohms @ 68°F (20°C) |
|---|
| All Models | 13.4-14.2 |
IDLE SPEED
| Application | Idle RPM |
|---|
| Except GS430 & LS430 | 650-750 |
| GS430 & LS430 | 700-800 |
| (1) Check with engine at normal operating temperature, transaxle/transmission in Neutral, parking brake applied, air cleaner and all vacuum and air induction hoses installed, electronic fuel injection system wiring connectors properly installed, ignition timing properly set, and A/C and all accessories off. |
| (1) | Check with engine at normal operating temperature, transaxle/transmission in Neutral, parking brake applied, air cleaner and all vacuum and air induction hoses installed, electronic fuel injection system wiring connectors properly installed, ignition timing properly set, and A/C and all accessories off. |
IDLE SPEED SPECIFICATIONS (1)
THROTTLE OPENER
| Application | RPM |
|---|
| ES300 | 1100-1700 |
| RX300 | (2) |
| (1) Check with throttle opener vacuum hose disconnected and plugged, engine idling and at normal operating temperature. (2) Information is not available from manufacturer. |
| (1) | Check with throttle opener vacuum hose disconnected and plugged, engine idling and at normal operating temperature. |
| (2) | Information is not available from manufacturer. |
THROTTLE OPENER SPECIFICATIONS (1)
FUEL CUT
| Application | Fuel Return RPM |
|---|
| ES300 & RX300 | 1200 |
| GS300, IS300 & LX470 | 1000 |
| GS430 & LS430 | 1400 |
| (1) Check with engine at normal operating temperature and A/C off. |
| (1) | Check with engine at normal operating temperature and A/C off. |
FUEL CUT SPECIFICATIONS (1)
THROTTLE POSITION (TP) SENSOR
| Application | Terminals (1) | Ohms @ 68°F (20°C) |
|---|
| ES300 & RX300 (2) |
| Throttle Fully Closed | VTA & E2 | 200-6300 |
| Throttle Fully Open | VTA & E2 | 2000-10,200 |
| VC & E2 | 2500-5900 |
| GS300 & IS300 | VC & E2 | (3) 1200-3200 |
| GS430 & LS430 | VC & ETA | (3) 1250-2350 |
| LX470 | VC & E2 | (3) 1250-2350 |
| (1) For TP sensor terminal identification (Scheme 4)- see scheme 7. (2) Apply vacuum to throttle opener before checking TP sensor. (3) Resistance at 68°F (20°C). |
| (1) | For TP sensor terminal identification (Scheme 4)- see scheme 7. |
| (2) | Apply vacuum to throttle opener before checking TP sensor. |
| (3) | Resistance at 68°F (20°C). |
TP SENSOR RESISTANCE SPECIFICATIONS
Scheme 4
Scheme 5
Scheme 6
ACCELERATOR PEDAL POSITION SENSOR
| Application | Terminals (1) | Ohms @ 68°F (20°C) |
|---|
| GS300 & IS300 | VC & E2 | 1200-3200 |
| GS430 & LS430 | VCP1 & EP1 | 1500-6000 |
| VCP2 & EP2 | 1500-6000 |
| LX470 | VC & E2 | 1640-3280 |
| (1) For accelerator pedal position sensor terminal identification (Scheme 7)- (Scheme 9). |
ACCELERATOR PEDAL POSITION SENSOR RESISTANCE SPECIFICATIONS
Scheme 7
Scheme 8
Scheme 9
