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Home >> Buick >> 1989 >> Reatta >> Repair and Diagnosis >> Engine Performance >> System >> 3.8L BCM Tests W/Codes >> Self-Diagnostics >> Code B113, In-Car Temperature Sensor Circuit >> Note On Intermittents

Note On Intermittents

If Code B113 is set with Code B115, check for an intermittent open in circuit No. 736 between splice "S2" and Instrument Panel (IP)-to-dash transition block. If an intermittent Code B113 is being set, manipulate related wiring while observing BD25 display. If failure is induced, reading will jump from its normal value to a reading outside the range of -29°F (-34°C) to 209°F (85°C).

If value indicated by BD25 display is not reasonably close to actual temperature of air at sensor, check for poor terminal contact or replace sensor.

Fig 1: Code B113, Wiring Diagram In-Car Temperature Sensor Circuit (Toronado)
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Fig 2: Code B113, Flow Chart In-Car Temperature Sensor Circuit
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