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HOMESERVICE MANUALSACURA20043.5RLREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - BASIC DIAGNOSTIC PROCEDURESIGNITION CHECKSIGNITION COIL CIRCUIT TESTING3.2CL & 3.2TL
2004 Acura 3.5RL

3.2CL & 3.2TL

2004 Acura 3.5RLSECTION 3.2CL & 3.2TL
  1. Remove ignition coil cover. Disconnect 6 ignition coil 3-pin connectors. Turn ignition on. Measure voltage between ground and each ignition coil connector terminal No. 3 (Black/Yellow wire). See appropriate wiring diagram under ENGINE PERFORMANCE in WIRING DIAGRAMS. If battery voltage is present, go to next step. If battery voltage is not present, repair open circuit between ignition coil(s) connector terminal No. 3 (Black/Yellow wire) and No. 11 IG COIL (15-amp) fuse located in underdash fuse/relay box.
  2. Turn ignition off. Measure continuity between ignition coil 3-pin connector terminal No. 2 (Black wire) and ground. If continuity is present, go to next step. If continuity is not present, repair open circuit between ignition coil(s) connector terminal No. 2 (Black wire) and ground.
  3. Disconnect PCM 31-pin "C" connector (A/T) or ECM 24-pin "B" connector (M/T). See Figure or Figure . Measure continuity between ECM/PCM harness connector terminals and ground. See PCM 31-PIN "C" CONNECTOR TERMINAL IDENTIFICATION (3.2CL & 3.2TL - A/T)  or ECM 24-PIN "B" CONNECTOR TERMINAL IDENTIFICATION (3.2CL & 3.2TL - M/T)  . If continuity is present between designated ECM/PCM connector terminal and ground, repair short circuit in appropriate wire between ignition coil and ECM/PCM. If continuity is not present, go to next step.
    PCM 31-PIN "C" CONNECTOR TERMINAL IDENTIFICATION (3.2CL & 3.2TL - A/T)

    Problem Cylinder Connector Terminal Wire Color
    No. 1 C4 Yellow/Green
    No. 2 C14 Blue/Red
    No. 3 C3 White/Blue
    No. 4 C13 Brown
    No. 5 C12 Black/Red
    No. 6 C23 Brown/White
    ECM 24-PIN "B" CONNECTOR TERMINAL IDENTIFICATION (3.2CL & 3.2TL - M/T)

    Problem Cylinder Connector Terminal Wire Color
    No. 1 B10 Yellow/Green
    No. 2 B9 Blue/Yellow
    No. 3 B8 White/Red
    No. 4 B19 Black/Blue
    No. 5 B18 Black/Red
    No. 6 B17 Brown/White
  4. Reconnect PCM 31-pin "C" connector (A/T) or ECM 24-pin "B" connector (M/T). Turn ignition switch to START position. Measure voltage between ignition coil 3-pin connectors terminal No. 1 and ground. See IGNITION COIL 3-PIN CONNECTOR TERMINAL NO. 1 IDENTIFICATION (3.2CL & 3.2TL - A/T)  or IGNITION COIL 3-PIN CONNECTOR TERMINAL NO. 1 IDENTIFICATION (3.2CL - M/T)  . If about .5 volt is present, replace ignition coil. If about .5 volt is not present, repair open circuit in appropriate wire between ignition coil connector terminal No. 1 and PCM.
    IGNITION COIL 3-PIN CONNECTOR TERMINAL NO. 1 IDENTIFICATION (3.2CL & 3.2TL - A/T)

    Ignition Coil Wire Color
    No. 1 Yellow/Green
    No. 2 Blue/Red
    No. 3 White/Blue
    No. 4 Brown
    No. 5 Black/Red
    No. 6 Brown/White
    IGNITION COIL 3-PIN CONNECTOR TERMINAL NO. 1 IDENTIFICATION (3.2CL - M/T)

    Ignition Coil Wire Color
    No. 1 Yellow/Green
    No. 2 Blue/Yellow
    No. 3 White/Red
    No. 4 Black/Blue
    No. 5 Black/Red
    No. 6 Brown/White
RENDER: 1.0x

NO RELATED

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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.