Communications

9403-AUXILIARY DRIVE ANSWERING DEVICE REMAINS OFF-COUPLING CLOSED (PSM)

For a complete wiring diagram Consult Diagrams/Electrical.

- When Monitored:
With the Programmable Special Module (PSM) is awake.

- Set Condition:
The Programmable Special Module (PSM) detects an invalid Power Take Off (PTO) code or signal settings.





Diagnostic Test

1. TEST FOR INTERMITTENT CONDITION
With the scan tool, record and erase DTC's
Turn the ignition on and activate the Power Take Off (PTO).
With the scan tool, read DTC's.
Does the scan tool display this DTC as active?

Yes

- Go To 2

No

- The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.
- Perform BODY VERIFICATION TEST - VER 1.Verification Tests

2. CHECK POWER TAKE OFF (PTO)
With the scan tool, Check Power Take Off (PTO).
Are the signal settings valid and the parameters set?

Yes

- Replace the Programmable Special Module (PSM).
- Perform BODY VERIFICATION TEST - VER 1.Verification Tests

No

- Go To 3

3. PROGRAMMABLE SPECIAL MODULE
Using the scan tool, perform Programmable Special Module (PSM) Reset ECU and Load Coding for vehicle application.
Cycle the ignition on and off three times, turn the ignition on.
Activate the Power Take Off (PTO).
With the scan tool, read DTC's.
Does the scan tool display this DTC as active?

Yes

- Replace the Programmable Special Module (PSM).
- Perform BODY VERIFICATION TEST - VER 1.Verification Tests

No

- Test Complete.