Home/Toyota/Tundra/Toyota Tundra II (2007-2013)/Repair manual/Engine Control Systems/Engine Control System (3UR-FE) (Service Specifications): Ot…
Contents Wiring diagrams Section: Engine Control Systems All sections

Engine Control System (3UR-FE) (Service Specifications): Other Toyota Tundra II

SERVICE DATA

MAF meter

Tester ConnectionConditionSpecified Condition
4 (THA) - 2 (E2G)20°C (-4°F)12.5 k to 16.9 kohms
20°C (68°F)2.19 k to 2.67 kohms
60°C (140°F)0.50 k to 0.68 kohms

Camshaft timing oil control valve

Tester ConnectionConditionSpecified Condition
1 - 220°C (68°F)6.9 to 7.9 ohms

Engine coolant temperature sensor

Tester ConnectionConditionSpecified Condition
1 - 2Approx. 20°C (68°F)2.32 k to 2.59 kohms
Approx. 80°C (176°F)0.310 k to 0.326 kohms

Throttle body

Tester ConnectionConditionSpecified Condition
1 (M-) - 2 (M+)20°C (68°F)0.3 to 100 ohms

Knock sensor

Tester ConnectionConditionSpecified Condition
1 - 220°C (68°F)120 to 280 kohms

Ignition relay No. 2

Tester ConnectionConditionSpecified Condition
IG2 MAIN fuseAlwaysBelow 1 ohms
1C-1 - 1B-8When battery voltage is not applied to terminals 1B-6 and 1B-710 kohms or higher
When battery voltage is applied to terminals 1B- 6 and 1B-7Below 1 ohms

EFI relay

Tester ConnectionConditionSpecified Condition
EFI No. 1 fuseAlwaysBelow 1 ohms
1C-1 - 1B-4 1C-1 - 1B-5When battery voltage is not applied to terminals 1B-2 and 1B-3)10 kohms or higher
When battery voltage is applied to terminals 1B- 2 and 1B-3)Below 1 ohms

Circuit opening relay

Tester ConnectionConditionSpecified Condition
3 - 5When battery voltage is not applied to terminals 1 and 210 kohms or higher
When battery voltage is applied to terminals 1 and 2Below 1 ohms

Fuel pump relay

Tester ConnectionConditionSpecified Condition
3 - 5When battery voltage is not applied to terminals 1 and 210 kohms or higher
When battery voltage is applied to terminals 1 and 2Below 1 ohms

Air fuel ration sensor (for Bank 1 sensor 1)

Tester ConnectionConditionSpecified Condition
1 (HA1A) - 2 (+B)20°C (68°F)1.8 to 3.4 ohms

Air fuel ration sensor (for Bank 2 sensor 1)

Tester ConnectionConditionSpecified Condition
1 (HA2A) - 2 (+B)20°C (68°F)1.8 to 3.4 ohms

Heated oxygen sensor (for Bank 1 sensor 2)

Tester ConnectionConditionSpecified Condition
1 (HT1B) - 2 (+B)20°C (68°F)11 to 16 ohms

Heated oxygen sensor (for Bank 2 sensor 2)

Tester ConnectionConditionSpecified Condition
1 (HT2B) - 2 (+B)20°C (68°F)11 to 16 ohms

A/F sensor heater relay

Tester ConnectionConditionSpecified Condition
A/F fuseAlwaysBelow 1 ohms
1C-1 - 1A-4When battery voltage is not applied to terminals 1A-2 and 1A-310 kohms or higher
When battery voltage is applied to terminals 1A- 2 and 1A-3Below 1 ohms