Diagnostic Starting Point

DIAGNOSTIC STARTING POINT - POWER TAKE-OFF (PTO)

IMPORTANT: The following steps must be completed before using the symptom tables.

1. Perform the Power Take-Off (PTO) Diagnostic System Check emphasis before using the Symptom Tables in order to verify that all of the following are true:
Refer to Diagnostic System Check - Power Take-Off (PTO).
- There are no DTCs set.
- The control module(s) can communicate via the serial data link. Diagnostic System Check
2. Review the system Description and Operation in order to familiarize yourself with the system functions. Refer to emphasis Power Take-Off (PTO) Description and Operation.

Visual/Physical Inspection
- Inspect the easily accessible and visible system components for obvious damage or conditions which could cause the symptom.
- Inspect the transmission for the proper transmission fluid level.
- Inspect the hydraulic reservoir for the proper hydraulic fluid level.
- Inspect the upfitter connections at the transmission.

Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions.

Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
- Power Take-Off Does Not Engage emphasis
- Engine RPM Does Not Increase With Power Take-Off Engaged emphasis
- Power Take-Off Indicator Inoperative emphasis