Tracking CAN-Bus Faults: Dodge Journey Wiring Diagram 2015-2020 (PDF)

Shop Floor Headaches: The BCM and U-Code Avalanche

A vehicle arrives on the hook. It cranks but refuses to fire, the anti-theft light is blinking frantically, and your diagnostic scanner cannot communicate with the ABS module. In practical diagnostics, some technicians might assume the powertrain control module (PCM) is totally toasted.

However, on this specific chassis, the Body Control Module acts as the central gateway for the network. A chafed wire in the door jamb or a corroded pin at a sub-harness can short the Computer Data Lines, pulling the entire CAN-bus to ground. This workshop reference provides the exact schematic routing for the BCM and the data networks. You can easily locate the physical splice packs, unhook suspected modules one by one, and watch your multimeter until the CAN voltage returns to a normal 2.5V baseline.

Powertrain Circuitry: 2.4L ED3 vs. 3.6L Pentastar

Between 2015 and 2019, the manufacturer offered the 3.6L Pentastar V6 alongside the standard 2.4L four-cylinder, but completely dropped the V6 option for the final 2020 model year. The engine wiring harnesses are entirely different, meaning you cannot use a generic diagram to hunt down a drivability issue.

If you are chasing a persistent P0300 random misfire on a 2017 Pentastar, you need to know exactly how the 5-volt reference signals are distributed among the cam phasers, ignition coils, and fuel injectors. Mechanics often find that an oil leak from the Pentastar's valley cooler can saturate the lower harness, causing erratic sensor readings. The 486-page digital archive explicitly maps out the Engine Performance circuits for both the 2.4L and 3.6L engines independently. Furthermore, the transmission schematics are segmented to match the 4-speed and 6-speed automatics, allowing you to trace shift interlock faults and solenoid control wires straight from the PCM connector.

Tracking Down Parasitic Battery Drains

A completely dead AGM battery after the car sits for a weekend is an incredibly common complaint on this platform. Finding the culprit requires a methodical approach to analyzing the Power Distribution network.

Pulling fuses randomly will simply wake up the network modules and completely skew your amp clamp readings. Using this technical document, you can trace the constant battery power feeds across the interior fuse block. Whether it is the Navigation radio failing to enter sleep mode, or the Active Bodyworks module pulling a heavy standby current, the schematics show you exactly which circuits stay hot. This enables precise voltage drop testing across the fuse test points without ever opening a door or triggering a wake-up signal.

Climate Control & Active Bodyworks Integration

Air conditioning faults on this model aren't always caused by a low refrigerant charge or a bad compressor clutch. The HVAC blend doors and blower motor speed controller rely on dedicated digital signals from the dash panel.

When a customer complains of intermittent A/C, the detailed Air Conditioning and Cooling Fan circuit diagrams let you verify the module inputs directly. You can check if the A/C pressure transducer is actually sending the correct voltage back to the computer before you even bother hooking up your AC recovery machine. The Exterior and Interior Lights circuits are also meticulously detailed, ensuring you can find the correct grounds when dealing with a dim headlight or a shorted taillight assembly.

Access the full PDF guide now and eliminate guesswork in your repairs.

Digital Tool Crib: Delivery & Access

We know that tying up a lift while waiting for technical data costs you money. That is why acquiring this diagnostic data is completely instant—no waiting for a physical CD to arrive in the mail. Secure your purchase using major credit cards, Google Pay, Apple Pay, or PayPal.

• Immediate Deployment: A download link lands in your email inbox the exact second the payment clears.
• Reliable Backup: The 96 MB PDF file is securely stowed in your user dashboard for future reference.
• Flexible Access: Your link stays live for 10 days, allowing up to 10 total downloads. Put a copy on your phone, the shop scanner tablet, and your main tough-book.
• Troubleshooting: If the shop Wi-Fi drops out during the transfer, shoot us a message. We will generate a secure Dropbox link to keep you moving.

Need a quick primer on handling large PDF files on your devices? Watch the walkthrough here: https://servicemanuals.info/How-to-Download.mp4

Diagnostic Q&A

I have a 2020 model in the shop. Are the schematics updated to reflect the removal of the 3.6L engine option? Yes. The index clearly shows that the 2020 section is strictly updated to cover only the 2.4L powertrain and its corresponding transmission, avoiding any confusion with the older V6 configurations.

Where do I find the specific pinouts for the 8.4-inch Uconnect touchscreen? The infotainment network is comprehensively mapped within the Radio and Navigation sections. It details the touchscreen display inputs, the factory amplifier routing, and the rear backup camera feed wiring.

A customer's 2017 vehicle has an intermittent draw seemingly coming from the instrument cluster. Will this document show the ground splices? Absolutely. The Ground Distribution maps are categorized separately from the power feeds. They clearly illustrate where the instrument cluster grounds to the chassis, allowing you to quickly perform a continuity test on the suspected wire before condemning the entire gauge cluster.