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HOMESERVICE MANUALSSATURN1992SL1 AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 9 (ENGINE CONTROLS - TESTS W/CODES - 4.6L)PCM CODE CHARTSCODE P059, OPEN TRANSAXLE TEMPERATURE SENSOR CIRCUITACTION
1992 Saturn SL1 Automatic

Code P059, Open Transaxle Temperature Sensor Circuit: Action

1992 Saturn SL1 AutomaticSECTION Action
WARNING: This page is about a different car, the 1995 Cadillac Seville. However, it is still accessible from the selected car via links, so may be relevant.

PCM turns on MIL. PCM substitutes coolant temperature value for transaxle temperature until coolant temperature reaches 221°F (105°C) then transaxle will be set to hot mode operation.

NOTE: Test numbers refer to numbers on diagnostic chart.
  1. With transaxle temperature sensor or wiring open, PCM data PD77 will read -35°C or less. If parameter does not show this, sensor and circuit is okay.
  2. Check for open in circuit No. 585 between PCM and sensor connector. If PCM data PD77 reads 148-151°C with sensor terminal "M" jumpered to ground, the circuit No. 585 and PCM are okay.
  3. Checks circuit No. 452 for open to PCM terminal connector.
  4. Checks PCM's ability to recognize low voltage on PCM terminal 1B14 (transaxle temperature sensor input). If grounding PCM terminal 1B14 caused PCM data PD77 to read 148-151°C, check for open in circuit No. 585 between PCM and sensor connector.
  5. Checks for open transaxle temperature sensor.
Fig 1: Code P059 Schematic, Open Transaxle Temperature Sensor Circuit
G94B32962Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

NO RELATED

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