Test step 7 - Sensor for compressor speed, low pressure and high pressure switches

Fig 1: Test Step 7 - Sensor For Compressor Speed, Low Pressure And High Pressure Switches (Step 7.5)

Courtesy of AUDI OF AMERICA, INC.

NOTE: Test steps 7.1 to 7.4 (no A/C compressor speed sensor -G111- installed) are not applicable to USA.

Fig 2: Test Step 7 - Sensor For Compressor Speed, Low Pressure And High Pressure Switches (Step 7.6)

Courtesy of AUDI OF AMERICA, INC.

NOTE: The A/C refrigerant low pressure switch -F73- is deleted with the introduction of A/C pressure switch -F129- (A/C control head beginning from index "J"). The terminal in the harness connector for A/C control head -E87- is no longer occupied.

• For output diagnostic test mode, see OUTPUT DIAGNOSTIC TEST MODE (DTM) (FUNCTION 03)  .
• To check high pressure switch -F118-, see A/C REFRIGERANT HIGH PRESSURE SWITCHES -F23- AND -F118- .
• To check pressures in refrigerant circuit, see A/C REFRIGERANT SYSTEM (R-134A), CHECKING PRESSURES .
• To check low pressure switch faulty or refrigerant circuit empty, see A/C REFRIGERANT SYSTEM, TESTING .