Improper Ratio

Symptom:
IMPROPER RATIO

Test 1:

Test 2:

When Monitored:
Engine rpm greater than 450 rpm, output speed greater than 180 rpm, no N2 N3 input speed sensor errors present, no gear selector lever errors present, no ABS system errors, and all wheel speeds above 450 rpm.

Set Condition:
No shifting operation and detected gear is not the actual gear No shifting operation - detected (calculated) gear is less than actual (expected) gear or no plausible gear is calculated or Actual turbine speed - calculated turbine speed > 300 rpm or calculated transmission ratio is above threshold. During an Upshift detected (calculated) gear is less than actual (expected) gear 1. During Downshift - detected (calculated) gear is less than actual (expected) gear

POSSIBLE CAUSES
- TRANSMISSION MECHANICAL PROBLEM
- TCM - IMPROPER RATIO