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Home >> Cadillac >> 1991 >> DeVille Touring >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> BCM Flow Charts Codes F10 To F48 >> BCM Code F12, A/C Low Side Temperature Sensor Circuit >> Test Procedures

Test Procedures

NOTE: Test numbers refer to test numbers on diagnostic chart.
  1. If temperature reading changes after disconnecting sensor, BCM and wiring are okay.
  2. If temperature reading changes after jumpering sensor terminals, BCM and wiring are okay.
  3. By applying ground to various points in circuits, an open can be isolated when temperature display changes from about -29°F to 194°F (-34°C to 90°C).
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