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HOMESERVICE MANUALSCHEVROLET2002IMPALA LSREPAIR AND DIAGNOSISELECTRICALCHARGING SYSTEMSSYSTEM TESTSTEST A: CHARGING SYSTEM TESTDELPHI CS130D
2002 Chevrolet Impala LS

Delphi CS130D

2002 Chevrolet Impala LSSECTION Delphi CS130D
  1. If diagnostic system check was not performed, go to ENGINE ELECTRICAL DIAGNOSTIC SYSTEM CHECK  under ON-VEHICLE TESTING. If diagnostic system check was performed, go to next step.
  2. Start engine and observe charge indicator on Instrument Panel Cluster (IPC), or charge message in Driver Information Center (DIC). If charge indicator light illuminates, or DIC displays a charging system message, go to next step. If charge indicator light does not illuminate or no message is present, problem is intermittent. Check wiring and connections.
    3. NOTE: Green POWER light on tester should remain illuminated while tester is being used.
  3. Turn ignition switch to LOCK position. Using CS Electronic Generator Tester (J-41450-B), connect Red lead to generator output terminal and Black lead to metal generator housing. If Green POWER light illuminates, go to step  6 . If Green POWER light does not illuminate, go to next step.
  4. Measure voltage between output terminal of generator and generator housing. If battery voltage is present, go to step  14 . If battery voltage is not present, go to next step.
  5. Measure voltage from generator output terminal to negative battery terminal. If battery voltage is present, go to step  12 . If battery voltage is not present, go to step  11 .
    6. CAUTION: Make sure load is completely turned off before connecting or disconnecting carbon pile load tester to battery.
  6. Connect carbon pile tester to battery. Connect inductive ammeter to output circuit of generator. Disconnect generator harness connector. Locate matching harness connector on Electronic Generator Tester and connect it to generator. If Red DIAGNOSTIC light on tester illuminates, go to next step. If Red DIAGNOSTIC light does not illuminate, go to step  13 .
  7. Start engine and allow to idle for 30 seconds. Increase engine speed to 2500 RPM. If Red DIAGNOSTIC light does not illuminate, go to next step. If Red DIAGNOSTIC light illuminates, go to step  15 .
  8. Maintain engine speed at 2500 RPM. Turn on load of carbon pile tester and increase load until generator output is greater than or equal to generator load test value. See GENERATOR SPECIFICATIONS  . If Red DIAGNOSTIC light illuminates, go to step  15 . If Red DIAGNOSTIC light does not illuminate, go to next step.
  9. Maintain engine speed at 2500 RPM and continue to operate generator at test load value. Measure voltage drop between generator output terminal and positive battery terminal. If voltage drop is greater than 0.5 volt, go to step  11 . If voltage drop is less than 0.5 volt, go to next step.
  10. Maintain engine speed at 2500 RPM and continue to operate generator at test load value. Measure voltage drop between generator metal housing and negative battery terminal. If voltage drop is greater than 0.5 volt, go to step  12 . If voltage drop is less than 0.5 volt, go to step  16 .
  11. Repair high resistance or open in generator output circuit between generator output terminal and positive battery terminal. See WIRING DIAGRAMS  . Repair circuit as necessary, then go to step  16 .
  12. Repair high resistance or open in ground circuit of generator. See WIRING DIAGRAMS  . Repair circuit as necessary, then go to step  16 .
  13. Disconnect generator harness connector from generator, but leave alligator clips connected so Green POWER light remains on. Connect a jumper wire with an in-line 100 ohm resister between harness connector terminal "B" and a good ground. See Fig 1 . If Red DIAGNOSTIC light illuminates, go to step  15 . If Red DIAGNOSTIC light does not illuminate, go to next step.
  14. There is a problem with CS Electronic Generator Tester (J-41450-B). Refer to manufacturers instructions, how to test J-41450-B for proper operation. If tester has been repaired or replaced, go to step  3 .
  15. Replace generator. See GENERATOR  under REMOVAL & INSTALLATION. Once replacement is complete, go to next step.
  16. Retest system to verify repair. If condition was corrected, system is okay. If condition was not corrected, go to step  2 .
Fig 1: Identifying Generator Harness Connector Terminals
G00060587Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

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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.