Figure 1.1 – Engine’s Display

CAT Messenger Display (Caterpillar Engines)

CAT P/N: #2395025-12 (Display Module Group)

Figure 1.2 – Back View (CAT Messenger Display)

Connector Pin Assignments

• Pin 1: Un-switched Battery (+) → Red
• Pin 2: Battery (-) → Black
• Pin 3: Battery Switched (+) → Red
• Pin 4: Dimmer → Purple
• Pin 5: ATA (-) → Blue
• Pin 6: ATA (+) → Yellow
• Pin 7: J1939/CAN (+) → Yellow
• Pin 8: J1939/CAN (-) → Green

Note: For installation and operation of the CAT Messenger Driver Information Display, refer to document REHS1413-05.

Murphy PowerView PV-101 (Caterpillar, Cummins, and Detroit Engines)

FW Murphy P/N: 78-70-0244 (PV101-A)

Figure 1.3 – Back View (Murphy PowerView)

Connector Pin Assignments

• Pin 1: Battery (+) → Red
• Pin 2: J1939/CAN (+) → Yellow (Installed with 120-ohm resistors at Pin 2-3)
• Pin 3: J1939/CAN (-) → Green
• Pin 4: J1939 (-)/Shield → Black
• Pin 5: Dimmer → Black
• Pin 6: Battery (-) → Black

Note: PowerView wiring diagrams are available for download.

Electronic Display Module (EDM) – Detroit Engines

DDC P/N: 23517174 (EDM C&I)

Figure 1.4 – Back View (EDM)

Connector Pin Assignments

• A: Battery (+) → Wire jumper to Connector C (Diagnostic Port) → Red
• B: Battery (-) → Wire jumper to Connector E (Diagnostic Port) → Black
• C: J1708/J1587 Hi (+) → Wire jumper to Connector A (Diagnostic Port) → Green/Yellow
• D: J1708/J1587 Lo (-) → Wire jumper to Connector B (Diagnostic Port) → Green

Further Reading: Diagnostic Port on Electronic Engines and Transmissions.

Electronic Engine Commander (EEC) – Detroit Engines

Figure 1.5 – Front View (DD EEC)

CONN A – Connector Pin Assignments

• A-1: DDEC Ignition Power → DDC#439 → Switched Battery (+) → Pink
• A-2: DDEC Accessory Ground → DDC#953 → Battery (-) → Black/White
• A-3: DDEC Data Link (+) → DDC#900 → J1708/J1587 Serial Link → Green/Yellow
• A-4: DDEC Data Link (-) → DDC#901 → J1708/J1587 Serial Link → Green

Figure 1.6 – Inside View (DD EEC)

CONN B – Connector Pin Assignments

• B-1: DDEC PGS Mode Select → DDC#523 → Output (Ground) to DDEC → Gray/Red (Signals DDEC to toggle between pressure and RPM mode)
• B-2: OEM Interlock POS Input → Input (+12 VDC) from OEM Parking Brake/Neutral (Throttle Ready LED)
• B-3: Cavity Plug → No Connection
• B-4: DDEC PSG-PSI Mode Active → DDC#499 → Input (Ground) from DDEC → Blue (Ground from DDEC when PSG Pressure Mode is active – Pressure LED lights up)
• B-5: DDEC PSG Enable → DDC#543 → Output (Ground) to DDEC → Orange/Black (Ground to DDEC to turn cruise control (PSG) on – Cruise On/Off Control)
• B-6: DDEC PSG Increase → DDC#545 → Output (Ground) to DDEC → Blue/Yellow (Ground to DDEC to increase RPM/Pressure – Resume/Accel Increase)
• B-7: DDEC PSG Decrease → DDC#541 → Output (Ground) to DDEC → Yellow/Red (Ground to DDEC to decrease RPM/Pressure – Set/Coast Decrease)
• B-8: DDEC Cruise Active → Input (Ground) from DDEC (Ground from DDEC to EEC when cruise control (PSG) system is active)
• B-9: Alarm → Output (Ground) to Alarm
• B-10: OK to PUMP Interlock POS Input → Input (+12 VDC) from OEM PTO Engaged/Pump Engaged
• B-11: Cavity Plug → No Connection
• B-12: Low Fuel → Input (Ground) from OEM

Note: DDC circuit numbers and port assignments provided are typical but may vary based on application.

Contact Us

Whatsapp: +84.858.966.333
Facebook: VIETVehicle Remote Delete Service
YouTube: VIETVehicle – ECM Delete Tuning
Tiktok: VIETVehicle.com
Website: VIETVehicle.com