Diagnostic Aids
Check harness routing for potential short to ground in circuit No. 1227. Scan tool displayed temperature should rise steadily to about 212°F (100°C), then stabilize. Test transmission sensor at various temperature levels to determine if sensor is out of calibration. See TEMPERATURE-TO-RESISTANCE VALUES (DTC 79) table. An out-of-calibration sensor could result in firm shifts or TCC enable complaint.
TEMPERATURE-TO-RESISTANCE VALUES (1) (DTC 79)
| Temperature °F (°C) | Ohms | ||
|---|---|---|---|
| 300 (150) | 43-52 | ||
| 248 (120) | 90-110 | ||
| 212 (100) | 158-196 | ||
| 160 (70) | 410-524 | ||
| 104 (40) | 1260-1660 | ||
| 70 (20) | 2981-4018 | ||
| 15 (-10) | 13,366-18,770 | ||
| 0 (-18) | 23,458-33,524 | ||
| -40 (-40) | 80,965-120,123 | ||
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