Diagnostic Aids
Check harness routing for a potential short to ground in 5-volt TFT signal circuit. Scan tester TFT display should rise steadily to about 212°F (100°C) then stabilize.
Test transmission fluid temperature sensor at various temperature levels to evaluate possibility of a skewed (out-of-range) sensor. See TEMPERATURE VS. RESISTANCE VALUES table. A skewed sensor could result in delayed shifts or TCC complaints.
TEMPERATURE VS. RESISTANCE VALUES
| Temperature °F (°C) | (1)(2) Ohms | ||||
|---|---|---|---|---|---|
| -40 (-40) | 100,700 | ||||
| -22 (-30) | 52,700 | ||||
| -4 (-20) | 28,680 | ||||
| 5 (-15) | 21,450 | ||||
| 14 (-10) | 16,180 | ||||
| 23 (-5) | 12,300 | ||||
| 32 (0) | 9,420 | ||||
| 41 (5) | 7,280 | ||||
| 50 (10) | 5,670 | ||||
| 59 (15) | 4,450 | ||||
| 68 (20) | 3,520 | ||||
| 77 (25) | 2,796 | ||||
| 86 (30) | 2,238 | ||||
| 95 (35) | 1,802 | ||||
| 104 (40) | 1,459 | ||||
| 113 (45) | 1,188 | ||||
| 122 (50) | 973 | ||||
| 140 (60) | 667 | ||||
| 158 (70) | 467 | ||||
| 176 (80) | 332 | ||||
| 194 (90) | 241 | ||||
| 212 (100) | 177 | ||||
|
|||||