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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 861 (AIR CONDITIONING SYSTEM - DIAGNOSIS)CIRCUIT INSPECTIONDTC B1422/22 COMPRESSOR LOCK SENSOR CIRCUITCIRCUIT DESCRIPTION
2004 Toyota Matrix XR, FWD, Standard

Circuit Description

2004 Toyota Matrix XR, FWD, StandardSECTION Circuit Description
WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.

This sensor sends 1 pulse per engine revolution to the ECM.

If the number ratio of the compressor speed divided by the engine speed is smaller than a predetermined value, the ECM turns the compressor off. And, the indicator flashes at about 1 second intervals.

DETECTION ITEM

DTC No. Detection Item Trouble Area
B1422/22 All conditions below are detected for 3 secs. or more
  1. Engine speed : 450rpm or more
  2. Ratio between engine and compressor speed deviates 20% or more in comparison to normal operation.
  • Compressor.
  • Compressor drive belt.
  • Compressor lock sensor.
  • Harness and connector between compressor and ECM.
  • Harness and connector between ECM and A/C ECU.
  • ECM.
  • A/C ECU.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.