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Section: Engine Control Systems

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Engine Control (service Specifications) Lexus IS F I

Engine Control Systems

SERVICE DATA

Spark plug	Standard insulation resistance	10 Mohmsor more
	Recommended spark plug	FK20HBR11 (DENSO made)
	Maximum electrode gap	1.4 mm (0.0551 in.) for used spark plug
	Electrode gap	1.0 to 1.1mm (0.0394 to 0.0433 in.) for new spark plug
Camshaft timing oil control valve assembly		Resistance: 6.9 to 7.9 ohms at 20°C (68°F)
Throttle body	1 (M-) - 2 (M+)	Resistance: 0.3 to 100 ohms at 20°C (68°F)
Mass air flow meter	1 (THA) - 2 (E2)	Resistance: 13.6 to 18.4 ohms at 20°C (68°F)
		Resistance: 2.21 to 2.69 ohms at 20°C (68°F)
		Resistance: 0.49 to 0.67 ohms at 20°C (68°F)
Engine coolant temperature sensor	1 - 2	Resistance: 2.32 k to 2.59 kohms at 20°C (68°F)
Engine coolant temperature sensor	1 - 2	Resistance: 0.310 k to 0.326 kohms at 80°C (176°F)
Knock sensor	1 - 2	Resistance: 120 to 280 kohms at 20°C (68°F)
Air fuel ratio sensor (for sensor 1)	1 (HT) - 2 (+B)	1.8 to 3.4 ohms at 20°C (68°F)
Heated oxygen sensor (for sensor 2)	1 (HT) - 2 (+B)	11 to 16 ohms at 20°C (68°F)
EFI MAIN relay Integration relay	2C-1 - 2A-8	10 kohms or higher
EFI MAIN relay Integration relay	2C-1 - 2A-8	Below 1 ohms (when battery voltage is applied to terminals 2A-6 and 2A-7)
EFI NO. 2 relay Integration relay	2C-1 - 2B-4	10 kohms or higher
EFI NO. 2 relay Integration relay	2C-1 - 2B-4	Below 1 ohms (when battery voltage is applied to terminals 2B-2 and 2B-3)
INJ relay Integration relay	2C-1 - 2A-4	10 kohms or higher
INJ relay Integration relay	2C-1 - 2A-4	Below 1 ohms (when battery voltage is applied to terminals 2A-2 and 2A-3)
C/OPN relay Integration relay	2B-5 - 2B-8	10 kohms or higher
C/OPN relay Integration relay	2B-5 - 2B-8	Below 1 ohms (when battery voltage is applied to terminals 2B-6 and 2B-7)
IG2 relay	3 - 5	10 kohms or higher
IG2 relay	3 - 5	Below 1 ohms (when battery voltage is applied to terminals 1 and 2)
VVT LH relay	3 - 5	10 kohms or higher
VVT LH relay	3 - 5	Below 1 ohms (when battery voltage is applied to terminals 1 and 2)
VVT RH relay	3 - 5	10 kohms or higher
VVT RH relay	3 - 5	Below 1 ohms (when battery voltage is applied to terminals 1 and 2)
INJ2 relay	3 - 5	10 kohms or higher
INJ2 relay	3 - 5	Below 1 ohms (when battery voltage is applied to terminals 1 and 2)
Air fuel ratio sensor relay	3 - 5	10 kohms or higher
Air fuel ratio sensor relay	3 - 5	Below 1 ohms (when battery voltage is applied to terminals 1 and 2)
Fuel pump relay	3 - 4	Below 1 ohms
Fuel pump relay	3 - 4	10 kohms or higher (when battery voltage is applied to terminals 1 and 2)

TORQUE SPECIFICATIONS

Part Tightened		N*m	Kgf*cm	Ft.*lbf
Camshaft timing oil control valve x Cylinder head cover sub-assembly		10	102	7
Camshaft timing control motor x Timing chain cover		21	214	15
Engine wire bracket x Timing chain cover		10	102	7
Stud bolt (Intake air surge tank)		5.0	51	44 in.*lbf
Throttle body x Intake air surge tank		10	102	7
ECM x Engine room ECU box		5.5	56	49 in.*lbf
Engine room ECU cover x Engine room ECU box		5.5	56	49 in.*lbf
Accelerator pedal x Body panel		5.4	55	48 in.*lbf
Mass air flow meter x Air cleaner cap sub-assembly		1.0	10	9 in.*lbf
Camshaft position sensor x Cylinder head cover sub-assembly		10	102	7
VVT sensor x Cylinder head cover sub-assembly		10	102	7
Crankshaft position sensor x Oil pan assembly		10	102	7
Spark plug x Cylinder head assembly		21	214	15
Ignition coil x Cylinder head cover sub-assembly		9.0	92	80 in.*lbf
Wire harness clamp bracket x Body		8.0	82	71 in.*lbf
No. 7 engine room relay block x Body		8.0	82	71 in.*lbf
Battery tray x Body		5.4	55	48 in.*lbf
Engine coolant temperature sensor x Front water by-pass joint		21	214	15
Oil temperature sensor x	For use without SST	39	400	29
Oil temperature sensor x	For use with SST	30	301	22
Knock sensor x Cylinder block		20	204	15
Separator case x Cylinder block		10	102	7
Air fuel ratio sensor (for 1 sensor 1)	For use without SST	44	449	32
Air fuel ratio sensor (for 1 sensor 1)	For use with SST	40	408	30
Heated oxygen sensor (for sensor 2)	For use without SST	44	449	32
Heated oxygen sensor (for sensor 2)	For use with SST	40	408	30