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Home >> Mazda >> 2012 >> 6 i Touring >> Repair and Diagnosis >> External Pages >> Different car >> Section 583 (On-Board Diagnostic [HVAC)) >> DTC B1A63:11, B1A63:13, B1A64:11, B1A64:13 >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
DTC B1A63, B1A63, B1A64, B1A64 DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 INSPECT SOLAR RADIATION SENSOR 
 Yes Go to the next step.
No Replace the solar radiation sensor.
See SOLAR RADIATION SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER] .
2 INSPECT SOLAR RADIATION SENSOR CIRCUIT FOR OPEN CIRCUIT 
  • Disconnect the climate control unit connector and the solar radiation sensor connector.
  • Is there continuity between the following terminals of the climate control unit and the solar radiation sensor?
    • 2D-B
    • 2F-C
    • 2L-A
 Yes Go to the next step.
No Repair the wiring harness.
3 INSPECT SOLAR RADIATION SENSOR CIRCUIT FOR SHORT TO GROUND 
  • Is there a short circuit to ground in the wiring harness between the following terminals of the climate control unit terminal and solar radiation sensor?
    • 2D-B
    • 2F-C
 Yes Repair the wiring harness.
No Inspect the connection of the climate control unit connector.
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