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Cabin blower does not work or works only on maximum speed

Q: What are the symptoms of Cabin blower does not work or works only on maximum speed in Renault Scenic 3?

Problem visible at standstill or in traffic. Problem appears while driving. Irregular A/C operation. No blowing from vents

Q: How to fix Cabin blower does not work or works only on maximum speed in Renault Scenic 3?

Replacing the fan resistor, relay or the entire J293/fan module. A simple test: start the car, turn on the air conditioning to MAX. The radiator fan MUST start at slow speed immediately. If it stops and after a while it starts with a bang in 2nd gear - you have a burnt 1st gear resistor.

in Renault Scenic 3 (2000-2015)

Symptoms

Problem visible at standstill or in traffic
Problem appears while driving
Irregular A/C operation
No blowing from vents

DTC error codes

Compressor shutdown code: 1 (High Pressure, over 29 bar)

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Technical diagnosis (Premium)

Recognized technical fault:

Auxiliary controller voltage instability detected

Technical analysis

Detailed analysis of HVAC controller operation parameters, CAN bus data readings, and diagnostic signal waveforms. Purchase PRO access or log in to read the full fault analysis.

Confirmed solution

Complete step-by-step repair procedure including module non-volatile memory reset, sensor calibration, and correct wiring routing. Unlock the full report to see the instruction.

Parts needed

Filters ferrite anti-interference / noise suppressor
Auxiliary starting battery (depending on cell status)

Workshop hacks

Important workshop tips for mechanics regarding bypasses without expensive control module replacement and manufacturer software service bulletins.

TSB / TPI service bulletins

TSB-24-HVAC-01TPI-2068943/2

A/C Technical Specifications

Grand - Scenic III 1,4 i/1,6 i/1,5 dCi/1,9 dCi/2,0 dCi

Refrigerant: R134a Amount (g): 480g Oil: ND8 PAO 68 lub PAG ISO 46 Oil (ml): 110ml

Grand - Scenic III 2,0 i

Refrigerant: R134a Amount (g): 510g Oil: ZXL100PG PAO 68 lub PAG ISO 46 Oil (ml): 150ml

II (JMO) 1,4 i/1,5 D dCi/1,6 i/2,0 i/1,9 D dCi/2,0 D dCi

Refrigerant: R134a Amount (g): 550g Oil: Planetelf PAG 488 PAO 68 lub PAG ISO 150 Oil (ml): 150ml

See full specification

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