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Air conditioning stopped cooling / no response to AC button

Q: How to fix Air conditioning stopped cooling / no response to AC button in Peugeot 307?

Location and replacement (desoldering/soldering) of the relay itself on the board instead of replacing the entire module.

in Peugeot 307 (2000-2005)

Symptoms

No cold air from vents

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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

1,4 i 16 V

Refrigerant: R134a Amount (g): 450g Oil: SP 10 PAO 68 lub PAG ISO 46 Oil (ml): 135ml

1,6 HDi do numeru ORGA 10218 (i)

Refrigerant: R134a Amount (g): 585g Oil: SP 10 PAO 68 lub PAG ISO 46 Oil (ml): 135ml

307 - CC 1,4 i/1,6 i/2,0 i/1,4 HDi/2,0 HDi od numeru ORGA 10080 (i)

Refrigerant: R134a Amount (g): 450g Oil: SP 10 PAO 68 lub PAG ISO 46 Oil (ml): 135ml

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Air conditioning stopped cooling / no response to AC button

Symptoms

A/C Technical Specifications

Other problems in 307

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