Test Description

WARNING: This page is about a different car, the 1995 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Test numbers refer to numbers on diagnostic chart.

This test determines if a current condition exists.
Simulates a Code 58. If PCM recognizes low signal voltage, and scan displays about 146°C or higher, PCM and wiring are okay.
Checks if signal circuit is open. Five volts should be present at sensor connector.

Fig 1: Code 59 Schematic (Corvette) Transmission Temperature Sensor Low Temperature

Fig 2: Code 59 Diagnostic Flow Chart (Corvette) Transmission Temperature Sensor Low Temperature