SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 931 (ANTI-LOCK BRAKE SYSTEM)ICU (INTEGRATED CONTROL UNIT)INSTALLATION
2004 Toyota Matrix XR, FWD, Standard

ICU (Integrated Control Unit): Installation

2004 Toyota Matrix XR, FWD, StandardSECTION Installation
WARNING: This page is about a different car, the 2004 Chrysler Pacifica. However, it is still accessible from the selected car via links, so may be relevant.
  1. Place ICU with mounting bracket over two mounting bolts in frame rail (Figure ). Tighten bolts to 24 N.m (18 ft. lbs.) torque.
  2. Connect 47-way wiring connector at CAB (Figure ).
    NOTE: When installing chassis brake tubes on ICU, install and tighten two center tube nuts before installing the outer tubes. This action makes it easier to fit a crowfoot wrench and torque wrench in to tighten center brake tube nuts.
  3. Connect four chassis brake tubes to outlet ports of ICU (Figure ). Tighten brake tube nuts to 14 N.m (120 in. lbs.) torque.
    CAUTION: When installing master cylinder on vehicle, a NEW vacuum seal MUST be installed on master cylinder.
  4. Install NEW vacuum seal on rear of master cylinder making sure seal fits squarely in mounting groove.
  5. Position master cylinder on studs of power brake booster (Figure ), aligning booster push rod with master cylinder piston.
  6. Install two master cylinder mounting nuts (Figure ). Tighten both mounting nuts to 25 N.m (225 in. lbs.) torque.
  7. Thread primary and secondary brake tubes into ICU ports as shown (Figure ). Brake tubes must be held securely when tightened to control orientation of flex section. Tighten tube nuts to 14 N.m (120 in. lbs.) torque.
  8. Connect wiring harness connector to brake fluid level switch mounted in brake fluid reservoir (Figure ).
  9. Place coolant recovery bottle in its normal mounted position and install nuts fastening it in place. (Refer to COOLANT RECOVERY PRESS CONTAINER ).
  10. Connect negative battery cable to battery post.
  11. Hook up DRBIII(R) to initialize CAB.
  12. Fill master cylinder with clean, fresh Mopar(R) Brake Fluid or equivalent, then bleed base brakes and ABS. (Refer to BRAKE FLUID ) and (BLEEDING BRAKE SYSTEM ).
  13. Road test vehicle to ensure proper operation of brakes.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.