Dean H

I was unable to jack my vehicle off the ground. So, I cut through the seal from the inside.

Read this thread too. https://www.dodgejourneyforum.com/topic/18115-electrical-system-fyi-cables/

To answer your questions regarding the grounds on the driver's side strut tower. On the large stud is a 2 gauge cable to battery. 2 gauge to the engine block ground stud. On the middle stud is 4 gauge ground to the engine block somewhere. I did that first before upgrading everything. Just left it on.

Hello, First, when I did this work, I had too much bulk cable and time and got a little crazy. First check out my thread on the battery below. https://www.dodgejourneyforum.com/topic/18210-electrical-system-fyi-battery/ A realistic ground upgrade would be this. Passenger motor Mount to strut tower ground studs. This is a weak ground. - 4 or 6 gauge cable to replace small ground wire. - mending bar or wire stud to stud. Driver's side strut tower battery ground stud. - 2 gauge cable from this stud to the engine block stud. Next to the electric vacuum pump. You need ⅜" size lugs on both ends of the cable. -Running a cable inside to the factory stud on the passenger side kick panel. To the right of the glove box. -A cable to the bolt to the left of the cabin air filter. That is all you need. I wish, I knew the length of cable to the interior. I don't.

Underhood battery connections below. Negative terminal large stud on the strut tower. Positive cable connection on TIPM under red cover.

Dodge journey service information. P0600 serial communication link. -PCM detects internal failure. -Check PCM connectors and grounds. Clear codes if it returns, Replace PCM. This is the battery negative ground on the right large cable. The PCM grounds through one of the 2 small studs. Check these and clean.

The electrical system is a major weak point on the Journey. Read these 2 threads linked below, regarding the Journey's electrical system. Read through the entire thread carefully. You need to go over these basic checks. Concerning the low voltage issue. I will post information on your code, when I get a chance. Battery https://www.dodgejourneyforum.com/topic/18210-electrical-system-fyi-battery/ Ground system https://www.dodgejourneyforum.com/topic/18374-electrical-system-fyi-ground-system/

After the previous steps have been done. Using a bi-directional scanner. Check if it can communicate with the abs module. Using a Dodge wiring diagram. Next, would be to check the ABS module connector for damage and any broken wires. The CAN BUS communication lines are 2 small wires twisted together. The ABS MODULE itself could be shorted out internally. The ABS module is hidden up underneath the passenger side cowl in the engine bay.

#1) Battery- tested healthy. #2) Battery cables and ground connections cleaned. #3) Check fuses for ABS in the Underhood fuse box. TIPM. Inside the lid shows the fuse diagram. F141 40 amp F173 25 amp F156 10 amp #4) ABS module grounds. There are 2 ground wires. Passenger strut tower 2 ground studs. Clean and check for broken wires.

U0121-00- LOST COMMUNICATION WITH ANTI-LOCK BRAKE SYSTEM (ABS) CONTROL MODULE ا Set Conditions: The Body Control Module (BCM) does not receive any CAN Bus messages from the Anti-lock Brake System (ABS). Causes- ANTI-LOCK BRAKE SYSTEM MODULE (ABS) POWERS AND GROUNDS ANTI-LOCK BRAKE SYSTEM MODULE (ABS) CAN C BUS (+) CIRCUIT OPEN CAN C BUS (-) CIRCUIT OPEN

Get the codes read by a shop with bi-directional scanner.

I covered the battery and grounds in the threads linked below. Read through the entire thread and all of the posts. https://www.dodgejourneyforum.com/topic/18210-electrical-system-fyi-battery/ https://www.dodgejourneyforum.com/topic/18374-electrical-system-fyi-ground-system/

You need to get it read for codes. This will give us something to work with. Start with the battery, cables and ground cables. Go here for all the details - https://www.dodgejourneyforum.com/topic/18210-electrical-system-fyi-battery/ https://www.dodgejourneyforum.com/topic/18374-electrical-system-fyi-ground-system/

If your battery CCA is up to spec. I would go through every battery cable and ground connection. Clean, seated and tight. Scan for codes.

Here is the charging system thread. https://www.dodgejourneyforum.com/topic/18296-charging-system-101-with-diagrams/