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 MANUALSSCION2006XB L4-1.5L (1NZ-FE)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMKNOCK SENSORSERVICE AND REPAIR
2006 Scion xB L4-1.5L (1NZ-FE)
Knock Sensor: Service and Repair
2006 Scion xB L4-1.5L (1NZ-FE)SECTION Service and Repair
REMOVAL
1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.
2. REMOVE ENGINE UNDER COVER LH
3. REMOVE ENGINE UNDER COVER RH
4. REMOVE STARTER ASSEMBLY
5. REMOVE KNOCK SENSOR
a. Disconnect the sensor connector.
b. Remove the nut and sensor.
INSTALLATION
1. INSTALL KNOCK SENSOR
a. Install the knock sensor with the nut.
Torque: 20 N.m (204 kgf.cm, 15 ft.lbf)
b. Connect the sensor connector.
2. INSTALL STARTER ASSEMBLY
3. INSTALL ENGINE UNDER COVER RH
4. INSTALL ENGINE UNDER COVER LH
5. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.
2. REMOVE ENGINE UNDER COVER LH
3. REMOVE ENGINE UNDER COVER RH
4. REMOVE STARTER ASSEMBLY
5. REMOVE KNOCK SENSOR
a. Disconnect the sensor connector.
b. Remove the nut and sensor.
INSTALLATION
1. INSTALL KNOCK SENSOR
a. Install the knock sensor with the nut.
Torque: 20 N.m (204 kgf.cm, 15 ft.lbf)
b. Connect the sensor connector.
2. INSTALL STARTER ASSEMBLY
3. INSTALL ENGINE UNDER COVER RH
4. INSTALL ENGINE UNDER COVER LH
5. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
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.