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IGNITOR Signal Circuit

NOTE: If not using the hand-held tester, begin with step  3.
  1. Check the tachometer value. Connect the hand-held tester to DLC3. See Figure. Turn the ignition switch ON and hand-held tester main switch ON. Select the DATA LIST mode on the hand-held tester. When running the engine, check that parameter value of the tachometer changes on the screen of the hand-held tester. If the revolutions displayed on the screen of the tester changes as the engine rotates, replace the combination meter. See INSTRUMENT PANEL  under REMOVAL & INSTALLATION. If the results are not as described as above, go to the next step.
  2. Check the harness and connector between the combination meter and ECM. If the results are OK, check the ignitor circuit. For 2002 models, see DTC P1300: IGNITOR CIRCUIT MALFUNCTION under DIAGNOSTIC TESTS under SELF-DIAGNOSTICS - GS300 or SELF-DIAGNOSTICS - GS430 article in ENGINE PERFORMANCE. For 2003 models, see DTC P0351: IGNITOR CIRCUIT MALFUNCTION under DIAGNOSTIC TESTS under SELF-DIAGNOSTICS - GS300 or SELF-DIAGNOSTICS - GS430 article in ENGINE PERFORMANCE. If the results are not good, repair or replace the harness or connector.
  3. Check the ignitor circuit. For 2002 models, see DTC P1300: IGNITOR CIRCUIT MALFUNCTION under DIAGNOSTIC TESTS under SELF-DIAGNOSTICS - GS300 or SELF-DIAGNOSTICS - GS430 article in ENGINE PERFORMANCE. For 2003 models, see DTC P0351: IGNITOR CIRCUIT MALFUNCTION under DIAGNOSTIC TESTS under SELF-DIAGNOSTICS - GS300 or SELF-DIAGNOSTICS - GS430 article in ENGINE PERFORMANCE. If the results are OK, replace the combination meter. See INSTRUMENT PANEL  under REMOVAL & INSTALLATION. If the results are not good, go to the next step.
  4. Check the harness and connector between the combination meter and ECM. If the results are OK, check for ignitor circuit malfunction. For 2002 models, see DTC P1300: IGNITOR CIRCUIT MALFUNCTION under DIAGNOSTIC TESTS under SELF-DIAGNOSTICS - GS300 or SELF-DIAGNOSTICS - GS430 article in ENGINE PERFORMANCE. For 2003 models, see DTC P0351: IGNITOR CIRCUIT MALFUNCTION under DIAGNOSTIC TESTS under SELF-DIAGNOSTICS - GS300 or SELF-DIAGNOSTICS - GS430 article in ENGINE PERFORMANCE. If the results are not good, repair or replace the harness or connector.
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