Junction Block: Description

WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.

A junction block is used on vehicles that are not equipped with antilock brakes (ABS). The junction block is located on the left side of the lower radiator support. See Fig 1. The junction block mounts in the same location as the ABS integrated control unit (ICU) does on vehicles with ABS.

It has six threaded ports to which the brake tubes connect. Two are for the brake tubes coming from the master cylinder. The remaining four ports are for the brake tubes going to each brake assembly. The valve is permanently mounted to a bracket which fastens to the lower radiator support.

The junction block includes two proportioning valves for the rear brakes. One valve is mounted in each end of the block. See Fig 1. The proportioning valves are not serviced separately from the junction block.

Fig 1: Junction Block Mounting

Courtesy of DAIMLERCHRYSLER CORP.

1 - PROPORTIONING VALVE

2 - JUNCTION BLOCK

3 - LOWER RADIATOR SUPPORT