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Home >> Acura >> 2003 >> RSX Base, Automatic >> Repair and Diagnosis >> Electrical >> Charging Systems >> Charging System >> Charging System Indicator Circuit Troubleshooting >> K20A2 Engine (2002-2004 Models)

K20A2 Engine (2002-2004 Models)

  1. Turn the ignition switch ON (II).

    Does the charging system indicator come on? 

    1. YES -  Go to step 2.
    2. NO -  Go to step  3.
  2. Start the engine.

    Does the charging system indicator go off? 

    1. YES -  Charging system indicator circuit is OK. Go to the Alternator and Regulator Circuit Troubleshooting (see ALTERNATOR AND REGULATOR CIRCUIT TROUBLESHOOTING  ).
    2. NO -  Go to step 3.
  3. Do the gauge assembly self-diagnostic function procedure (see FRONT IMPACT SENSOR HARNESS (WITH BOSE SOUND SYSTEM) ).

    Does the charging system indicator flash? 

    1. YES -  Go to step 4.
    2. NO -  Replace the gauge assembly (see GAUGE ASSEMBLY REPLACEMENT ).
  4. Turn the ignition switch OFF.
  5. Disconnect the engine wire harness 6P connector from the starter subharness 6P connector.
  6. Turn the ignition switch ON (II).
  7. Measure the voltage between engine wire harness 6P connector terminal No. 3 and body ground.
    Fig 1: Measuring Voltage Between Engine Wire Harness 6P Connector Terminal No. 3 And Body Ground
    G03650058Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage? 

    1. YES -  Go to step 8.
    2. NO -  Check for a blown No. 4 (10 A) fuse in the under-dash fuse/relay box. If the fuse is OK, repair open in the wire between the alternator and under-dash fuse/relay box.
  8. Turn the ignition switch OFF.
    NOTE: This step must be done to protect the engine control module (ECM) from damage.
  9. Disconnect ECM connector B (24P).
  10. Check for continuity between ECM connector terminal B10 and engine wire harness 6P connector terminal No. 6.
    Fig 2: Checking For Continuity Between ECM Connector Terminal B10 And Engine Wire Harness 6P Connector Terminal No. 6
    G03650059Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    1. YES -  Go to step 11.
    2. NO -  Repair an open in the wire between the alternator and the ECM.
  11. Check for continuity between ECM connector terminal BIO and body ground.
    Fig 3: Checking For Continuity Between ECM Connector Terminal Bio And Body Ground
    G03650060Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    1. YES -  Repair a short in the wire between the alternator and the ECM.
    2. NO -  Go to the Alternator and Regulator Circuit Troubleshooting (see ALTERNATOR AND REGULATOR CIRCUIT TROUBLESHOOTING  ).
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