B1 - B2

Pinpoint Test B:

Diagnostic Trouble Codes
26/636 Out of Self-Test Range
56/637, 66/638 Transmission Oil Temperature Sensor circuit open/grounded
68/657 Transmission Overtemp Indicated.

Components
- Transmission Wiring Harness transmission oil temperature (TOT) sensor, SIGNAL RETURN.
- Powertrain Control Module.


NOTE: This Pinpoint Test is designed to diagnose the Transmission Oil Temperature Sensor electrical system ONLY. To prevent replacement of good components, note that the following areas may be at fault:
^ Engine - Cooling
^ Electrical - Battery, wiring harnesses
^ Transmission - Internal transmission components, cooling, fluid.