Renault Megane Quiz
Engine and peripherals

Interpreting states

In this manual: Engine and peripherals
Engine and peripherals — 141Chassis — 79Chassis — 72Renault Mégane III Driver's Manual — 87Electrical equipment — 221Engine and peripherals — 47Electrical equipment — 80Transmission — 14Air conditioning — 30Bodywork — 115Trim and upholstery — 44General vehicle information — 27Air conditioning — 59General vehicle information — 16Transmission — 38Sealing and soundproofing — 7General vehicle information — 3
~15min read
ET014 FAN MOTOR 1 CONTROL

INSTRUCTIONS

Nothing to report.

Carry out a multiplexed network test.

Refer to the Repair Manual for diagnosis of the "Multiplexed network".
If the problem is not resolved, carry out diagnosis of the Protection and Switching Unit.

Refer to the Repair Manual for diagnosis of the "Protection and Switching Unit".

AFTER REPAIR

Restart the conformity check from the beginning.

ET015 GMV 2 CONTROL

INSTRUCTIONS

Nothing to report.

Carry out a multiplexed network test.

Refer to the Repair Manual for diagnosis of the "Multiplexed network".
If the problem is not resolved, carry out diagnosis of the Protection and Switching Unit.

Refer to the Repair Manual for diagnosis of the "Protection and Switching Unit".

AFTER REPAIR

Restart the conformity check from the beginning.

ET039 BRAKE PEDAL

INSTRUCTIONS

No fault must be present or stored.

Check the condition of the pedal assembly.
Check the cleanliness and condition of the dual-contact brake switch and its connector.
With ignition on, check for +12 V at the brake pedal switch connector (see the connector pin number in the corresponding wiring diagram).
Disconnect the battery and the injection ECU.

Check the connector for cleanliness and condition.

Using the "Universal breakout box", check the insulation and continuity of the following link:

ECU pin E4, connector A → Brake pedal

(See the connector pin number in the relevant wiring diagram.)
If it still does not work, replace the switch.

AFTER REPAIR

Restart the conformity check from the beginning.

ET040 CLUTCH PEDAL

INSTRUCTIONS

No fault must be present or stored.

Check the condition of the pedal assembly.
Check the cleanliness and condition of the clutch pedal switch and its connector.
Check for ground at the clutch pedal switch connector (see the connector pin number in the corresponding wiring diagram).
Disconnect the battery and the injection ECU.

Check the connector for cleanliness and condition.

Using the "Universal breakout box", check the insulation and continuity of the following link:

ECU pin C4, connector A → Clutch pedal switch

(See the connector pin number in the relevant wiring diagram.)
If it still does not work, replace the switch.

AFTER REPAIR

Restart the conformity check from the beginning.

ET042 CRUISE CONTROL / SPEED LIMITER

INSTRUCTIONS

No fault must be present or stored.

WARNING: removing or testing the cruise control / speed limiter switches requires removing the airbag.

Refer to the Repair Manual, "Airbag" section.

Check the cleanliness and condition of the cruise control / speed limiter on-off switch and its connector.
With ignition on, check for +12 V at the cruise control / speed limiter selector switch connector (see the connector pin number in the corresponding wiring diagram).
Disconnect the battery.

Disconnect the ECU. Check the cleanliness and condition of the connector.

Use the "Universal breakout box". Check insulation and continuity of the following connections:

ECU pin A2, connector A → Cruise control / speed limiter on-off switch
ECU pin C3, connector A → Cruise control / speed limiter on-off switch

(see the connector pin numbers in the corresponding wiring diagram)
If the problem persists, replace the switch.

AFTER REPAIR

Restart the conformity check from the beginning.

ET045 STEERING WHEEL CRUISE / SPEED LIMITER SELECTORS

INSTRUCTIONS

No fault must be present or stored.

WARNING: removing or testing the cruise control / speed limiter switches requires removing the airbag.

Refer to the Repair Manual, "Airbag" section.

Check the cleanliness and condition of the steering wheel increment switches and their connectors.
Check for ground at the steering wheel increment switches (see the connector pin numbers in the corresponding wiring diagram).
Disconnect the battery.

Disconnect the ECU. Check the cleanliness and condition of the connector.

Use the "Universal breakout box". Check insulation and continuity of the following connections:

ECU pin D2, connector A → Steering wheel control switch
ECU pin D3, connector A → Steering wheel control switch

(see the connector pin numbers in the corresponding wiring diagram)
If the problem persists, replace the faulty switch.

AFTER REPAIR

Restart the conformity check from the beginning.

ET052 UPSTREAM O2 SENSOR HEATING

INSTRUCTIONS

No fault must be present or stored

Check the cleanliness and condition of the upstream oxygen sensor and its connector.
With ignition on, check for +12 V at the upstream oxygen sensor connector (see the connector pin number in the corresponding wiring diagram). If there is no +12 V:
  • disconnect the battery,
  • disconnect connector PPM1 from the Protection and Switching Unit,
  • check the cleanliness and condition of the connector,
  • use the "Universal breakout box" and check continuity of the following connection:

Protection and Switching Unit connector PPM1 pin 2 → Upstream oxygen sensor
Reconnect the Protection and Switching Unit connector and reconnect the battery.

If there is still no +12 V at the upstream oxygen sensor connector with ignition on, there is a fault in the Protection and Switching Unit.

Contact Techline.
Disconnect the battery and the injection ECU.

Check the connector for cleanliness and condition.

Use the "Universal breakout box". Check insulation and continuity of the following connection:

ECU pin L2, connector C → Upstream oxygen sensor

(See the connector pin number in the relevant wiring diagram.)
Check the heater resistance of the upstream oxygen sensor (see the value in the "Help" chapter).

If the value is not within specification, replace the upstream oxygen sensor.
If the problem persists, replace the upstream oxygen sensor.

AFTER REPAIR

Restart the conformity check from the beginning.

ET053 DOWNSTREAM O2 SENSOR HEATING

INSTRUCTIONS

No fault must be present or stored

Check the cleanliness and condition of the downstream oxygen sensor and its connector.
With ignition on, check for +12 V at the downstream oxygen sensor connector (see the connector pin number in the corresponding wiring diagram). If there is no +12 V:
  • disconnect the battery,
  • disconnect the connector marked "PPM1" in the Protection and Switching Unit,
  • check the cleanliness and condition of the connector,
  • use the "Universal breakout box" and check continuity of the following connection:

Protection and Switching Unit connector PPM1 pin 2 → Downstream oxygen sensor
Reconnect the Protection and Switching Unit connector and reconnect the battery.

If there is still no +12 V at the downstream oxygen sensor connector with ignition on, there is a fault in the Protection and Switching Unit.

Contact Techline.
Disconnect the battery and the injection ECU.

Check the connector for cleanliness and condition.

Use the "Universal breakout box". Check insulation and continuity of the following connection:

ECU pin L3, connector C → Downstream oxygen sensor

(See the connector pin number in the corresponding wiring diagram)
Check the heater resistance of the downstream oxygen sensor (see the value in the "Help" chapter).

If the value is not within specification, replace the downstream oxygen sensor.
If the problem persists, replace the downstream oxygen sensor.

AFTER REPAIR

Restart the conformity check from the beginning.

ET054 IDLE SPEED CONTROL

INSTRUCTIONS

No fault must be present or stored.

Check parameters PR032, PR058, PR064, PR118, PR119, PR030.

Make sure all these parameters are fully within specification.

IDLE SPEED IS TOO LOW Check:
  • the engine oil level (too high => oil churning),
  • that the exhaust line is not blocked (damaged catalytic converter),
  • the cleanliness and conformity of the air filter,
  • that the air intake circuit is not obstructed,
  • that the throttle body assembly is not dirty,
  • the condition and conformity of the spark plugs,
  • the leak-tightness of the complete fuel circuit,
  • the fuel pressure and flow rate (see the Repair Manual),
  • the condition and cleanliness of the injectors,
  • the engine compressions,
  • the valve timing,
  • the hydraulic lash adjusters if there is a camshaft noise (see the Repair Manual).
IDLE SPEED IS TOO HIGH Check:
  • the engine oil level (too high => oil burning),
  • the presence of restrictors in the oil vapour recirculation circuit,
  • the seal between the throttle body and the intake manifold,
  • the seal of the manifold pressure sensor,
  • the fuel vapour canister purge valve, which must not be stuck open,
  • the seal of the fuel vapour canister purge circuit,
  • the seal of the brake booster circuit,
  • the absence of leaks between the intake manifold and the cylinder head,
  • the seal of the oil vapour recovery circuit between the intake manifold and the cylinder head,
  • the fuel pressure and flow rate (see the Repair Manual),
  • the condition and cleanliness of the injectors,
  • the engine compressions,
  • the valve timing,
  • the hydraulic lash adjusters if there is a camshaft noise (see the Repair Manual).

AFTER REPAIR

Restart the conformity check from the beginning.

ET055 RICH MIXTURE LOOP VIA UPSTREAM SENSOR

INSTRUCTIONS

No fault must be present or stored.

Check the cleanliness and condition of the upstream oxygen sensor connector.
With ignition on, check for +12 V at the upstream oxygen sensor connector (see the connector pin number in the corresponding wiring diagram). If there is no +12 V:
  • disconnect the battery,
  • disconnect connector PPM1 from the Protection and Switching Unit,
  • check the cleanliness and condition of the connector,
  • use the "Universal breakout box" and check continuity of the following connection:

Protection and Switching Unit connector PPM1 pin 2 → Upstream oxygen sensor
Reconnect the Protection and Switching Unit connector and reconnect the battery.

If there is still no +12 V on the upstream oxygen sensor connector with the ignition on, there is a fault in the Protection and Switching Unit.

Contact Techline.
Disconnect the battery and the injection ECU.

Check the connector for cleanliness and condition.

Use the "Universal breakout box". Check insulation and continuity of the following connections:

ECU pin C1, connector C → Upstream oxygen sensor
ECU pin B1, connector C → Upstream oxygen sensor
ECU pin L2, connector C → Upstream oxygen sensor

(see the connector pin numbers in the corresponding wiring diagram)
Check the heater resistance of the upstream oxygen sensor (see the value in the "Help" chapter).

If the value is not within specification, replace the upstream oxygen sensor.
Check the condition and tightness of the upstream oxygen sensor.
If the vehicle is driven mainly in town, perform a decarbonising run.

(Continued on next page).
Check:
  • the condition of the air filter,
  • that the air intake circuit is not obstructed,
  • the condition and conformity of the spark plugs,
  • the seal between the throttle body and the intake manifold,
  • the seal of the manifold pressure sensor,
  • the fuel vapour canister purge valve, which must not be stuck open,
  • the seal of the fuel vapour canister purge circuit,
  • the seal of the brake booster circuit,
  • the seal of the turbocharger wastegate circuit,
  • the seal of the cylinder head oil vapour recovery circuit,
  • the seal between the intake manifold and the cylinder head
  • the seal of the exhaust line from the cylinder head to the catalytic converter,
  • the fuel pressure and flow rate.
If the idle speed is unstable, check:
  • the valve timing,
  • the hydraulic lash adjusters if there is a camshaft noise (see the Repair Manual),
  • the cylinder compressions.
Carry out a road test cycle to validate the repair

AFTER REPAIR

Restart the conformity check from the beginning.

ET061 CYLINDER 1 RECOGNITION

INSTRUCTIONS

No fault must be present or stored.

Check the cleanliness and condition of the camshaft sensor connector.
Check the cleanliness and condition of the camshaft sensor.
Check with the ignition on for +12 V on the camshaft sensor connector (see the pin number in the corresponding wiring diagram). If there is no +12 V:
  • disconnect the battery,
  • disconnect the connector marked "PPM1" in the Protection and Switching Unit,
  • check the cleanliness and condition of the connector,
  • use the "Universal breakout box" and check continuity of the following connection:

Protection and Switching Unit connector PPM1 pin 2 → Camshaft sensor
Reconnect the Protection and Switching Unit connector and reconnect the battery.

If there is still no +12 V on the camshaft sensor connector with the ignition on, there is a fault in the Protection and Switching Unit.

Contact the Techline
Disconnect the battery.

Disconnect the ECU. Check the cleanliness and condition of the connector.

Take the "Universal breakout box". Check the insulation and continuity of the following connections:

ECU pin E2, connector C → Camshaft sensor
ECU pin F1, connector C → Camshaft sensor

(see the connector pin numbers in the corresponding wiring diagram)
If the problem is not resolved, replace the camshaft sensor.

AFTER REPAIR

Restart the conformity check from the beginning.

ET062 FLYWHEEL SIGNAL

INSTRUCTIONS

No fault must be present or stored.

Information: if the flywheel has been replaced or removed, reset the flywheel target learning.

Check the fixing and positioning of the flywheel signal sensor (refer to the relevant chapter in the Repair Manual).
Check the cleanliness and condition of the flywheel signal sensor and its connector.

Check the condition of the cable.
Disconnect the battery and the injection ECU.

Check the connector for cleanliness and condition.

Take the "Universal breakout box" and check the insulation and continuity of the following connections:

ECU pin E4, connector B → Engine speed sensor
ECU pin F3, connector B → Engine speed sensor

(See the connector pin numbers in the corresponding wiring diagram
Check the resistance of the flywheel signal sensor (see the value in the "Help" chapter).

If the value is not within specification, replace the flywheel signal sensor.
If the sensor has been replaced, it is necessary to reset the engine flywheel signal learning.
Method for resetting the engine flywheel signal learning: accelerate to 4000 rpm in third gear, then decelerate until the engine returns to idle*.

Carry out the procedure twice in succession.

(*This is the point where, during a closed-throttle deceleration, the engine drops to idle speed and regains torque.)
If the problem is not resolved, check the cleanliness and condition of the flywheel

AFTER REPAIR

Restart the conformity check from the beginning.

ET082 ELECTRONIC THROTTLE POSITION

INSTRUCTIONS

No fault must be present or stored.

IMPORTANT: never drive the vehicle without first checking that there is no fault relating to the throttle body.

Check the cleanliness and condition of the throttle body and its connector.
Check by hand that the throttle plate rotates correctly.
Disconnect the battery and the injection ECU.

Check the connector for cleanliness and condition.

Take the "Universal breakout box" and check the insulation and continuity of the following connections:

ECU pin M3, connector B → Electronic throttle
ECU pin M4, connector B → Electronic throttle
ECU pin G4, connector B → Electronic throttle
ECU pin G3, connector B → Throttle potentiometer track 1
ECU pin G2, connector B → Throttle potentiometer track 1
ECU pin D3, connector B → Throttle potentiometer track 2
ECU pin G2, connector B → Throttle potentiometer track 2

(See the connector pin numbers in the corresponding wiring diagram)
Check the resistance of the throttle motor between pins M3 and M4 (see the value in the "Help" chapter).

If the value is not within specification, replace the throttle body.

AFTER REPAIR

If the throttle body has been replaced, carry out an adaptation reset ("RZ008").

Restart the conformity check from the beginning

Test yourself

A quick Renault Megane quiz: every answer comes with an explanation and a link to the manual page.