Renault Clio: Particle filter temperature sensors: Removal - Refitting

K9K, and 772

The particle filter must be removed in order to remove the catalytic converter upstream temperature sensor.

REMOVAL

I - REMOVAL PREPARATION OPERATION

• Position the vehicle on a two-post lift (see Vehicle: Towing and lifting) (MR 392, 02, Lifting equipment).
• Disconnect the battery (see Battery: Removal - Refitting) (MR 392, 80A, Battery).
• Remove:
  • the engine cover,
  • the engine undertray.

II - OPERATION FOR REMOVAL OF PART CONCERNED

1 - Catalytic converter upstream temperature sensor

• Remove the particle filter (see 19B, Exhaust, Particle filter: Removal - Refitting, 19B-56).
• Remove the catalytic converter upstream temperature sensor from its adapter bolted to the exhaust pipe.

WARNING

When removing the particle filter temperature sensor, the adapter must be held with a lock wrench.

2 - Particle filter upstream temperature sensor

• Remove the heat shield clips (1)

• Remove the particle filter upstream temperature sensor (2) from its adapter (3) bolted to the exhaust pipe.

WARNING

When removing the particle filter temperature sensor, the adapter must be held with a lock wrench.

• Disconnect the green connector from the temperature sensor.
• Remove the particle filter upstream temperature sensor.

3 - Particle filter downstream temperature sensor

• Remove the heat shield clips (5)

• Remove the particle filter downstream temperature sensor (6) from its adapter (7) bolted to the exhaust pipe.

WARNING

When removing the particle filter temperature sensor, the adapter must be held with a lock wrench.

Detach the temperature sensor wiring harness (8) from the heat shield at (9), moving the heat shield aside.

Note: It may be necessary to detach the downstream pressure measurement connection (10) so as not to damage the temperature sensor wiring harness.

• Disconnect the black connector (11) from the temperature sensor.
• Remove the particle filter downstream temperature sensor.

REFITTING

I - REFITTING PREPARATION OPERATION

WARNING

Always replace any adapter that has been removed from the exhaust pipe.

• In the event of replacement, torque tighten the adapter (44 N.m).
• Coat the temperature sensor threading with ANTISEIZE COPPER GREASE or COPPER-ALUMINIUM LUBRICANT.

WARNING

Make sure that the grease does not run over the threading.

II - REFITTING OPERATION FOR PART CONCERNED

1 - Catalytic converter upstream temperature sensor

• Refit the catalytic converter upstream temperature sensor on its adapter bolted to the exhaust pipe.
• Torque tighten the catalytic converter upstream temperature sensor (30 N.m).
• Refit the particle filter (see 19B, Exhaust, Particle filter: Removal - Refitting, 19B-56).

2 - Particle filter upstream temperature sensor

• Refit the particle filter upstream temperature sensor to its adapter bolted to the exhaust pipe.
• Torque tighten the particle filter upstream temperature sensor (21 N.m).
• Connect the temperature sensor connector.
• Clip the temperature sensor wiring harness to the heat shield.
• Fit the heat shield.
• Refit the heat shield clips

3 - Particle filter downstream temperature sensor

• Refit the particle filter downstream temperature sensor to its adapter bolted to the exhaust pipe.
• Torque tighten the particle filter downstream temperature sensor (30 N.m).
• Connect the temperature sensor connector.
• Clip:
  • the temperature sensor wiring harness on the heat shield,
  • the downstream pressure measurement connection.
• Fit the heat shield.
• Refit the heat shield clips.

III - FINAL OPERATION

• Connect the battery (see Battery: Removal - Refitting) (MR 392, 80A, Battery).
• Before starting the engine, use the Diagnostic tool to clear any faults stored by the injection computer.
• Refit:
  • the engine undertray,
  • the engine cover.

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