SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSHONDA2004CR-V EX, STANDARDREPAIR AND DIAGNOSISBODY & FRAMEDOOR LOCKSIMMOBILIZER SYSTEMSYSTEM DESCRIPTION
2004 Honda CR-V EX, Standard

System Description

2004 Honda CR-V EX, StandardSECTION System Description

The vehicle is equipped with an immobilizer system (Type III) that will disable the vehicle unless the proper ignition key is used.

This system consists of a transponder located in the ignition key, an immobilizer control unit-receiver, an indicator light, and the ECM/PCM.

When the key is inserted in the ignition switch and turned to the ON (II) position, the immobilizer control unit-receiver sends power to the transponder in the ignition key. The transponder then sends a coded signal back to the immobilizer control unit-receiver which then sends a coded signal to the ECM/PCM. The ECM/PCM then energizes the fuel supply system.

Fig 1: Identifying Immobilizer System Components
G01474603Courtesy of AMERICAN HONDA MOTOR CO., INC.
  • If the proper key has been used, the immobilizer indicator light will come on for about 2 seconds, then go off.
  • If the wrong key has been used or the code was not received or recognized by the unit, the indicator light will come on for about 2 seconds, then it will blink until the ignition switch is turned OFF. The engine will crank but not start.
  • If the ignition switch is turned OFF, the indicator will blink for about 5 seconds to signal that the unit has reset correctly, then the indicator will go off.
  • If the customer has lost his key, and cannot start the engine, contact Honda Customer Relations.
Fig 2: Identifying Immobilizer Indicator Light Blinking Pattern
G01474604Courtesy of AMERICAN HONDA MOTOR CO., INC.
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.