Pinpoint Tests-Non OSC Equipped Vehicles

Pinpoint Tests

NOTE: If equipped, turn the Power Take-Off (PTO) unit off for correct test results. For a description of PTO operation, refer to Transmission Electronic Control System. On-Board Diagnostic is not accessible when the PTO unit is in operation. SSB is on when the PTO is in operation.

Any time an electrical connector or solenoid body is disconnected, inspect the connector for terminal condition, corrosion and contamination. Also inspect the connector seal for damage. Clean, repair or install a new connector as required.

Shift Solenoids Pre-Diagnosis
Use the following shift solenoid operation information when carrying out Pinpoint Test A.





a Powertrain control module - controlled

Solenoid Operation Chart

Shift Solenoid Failure Mode Chart Always OFF
Failed OFF due to PCM/vehicle wiring concerns; solenoid electrically or hydraulically stuck off.





SSA Always Off





SSB Always Off

*PTO will not operate

Shift Solenoid Failure Mode Chart Always ON
Failed ON due to PCM/vehicle wiring concerns; solenoid electrically or hydraulically stuck on.





SSA Always On





SSB Always On

*PTO will not operate