LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2017 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 38 (HVAC System - Automatic) >> Diagnostic Information and Procedures >> DTC B393B >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.

A/C Compressor Solenoid Valve Test

  1. Ignition OFF, disconnect the harness connector at the Q46 A/C Compressor Solenoid Valve.
  2. Test for 7 - 15 Ω between B+ terminal 2 and control terminal 1.
    • If less than 7 Ω or greater than 15 Ω 

      Replace the G1 A/C Compressor.

    • Go to next step: If between 7 - 15 Ω 
  3. Test for infinite resistance between each terminal and the Q46 A/C Compressor Solenoid Valve housing/case.
    • If less than infinite resistance 

      Replace the G1 A/C Compressor.

    • Go to next step: If infinite resistance 
  4. All OK.
scientia non olet · About LEMON Manuals