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ON-BOARD DIAGNOSTIC [L3 WITH TC] 01-02–127 01-02 Diagnostic procedure STEP INSPECTION ACTION 1 VERIFY FREEZE FRAME DATA HAS BEEN • Has the FREEZE FRAME DATA been recorded? Yes Go to the next step. No Record FREEZE FRAME DATA on the repair order, then go 2 VERIFY RELATED REPAIR INFORMATION • Check for related Service Bulletins and/or on- line repair information availability. • Is any related repair information available? Yes Perform repair or diagnosis according to the available the • If the vehicle is not repaired, go to the next step. No Go to the next step. 3 VERIFY CKP SENSOR VOLTAGE • Disconnect the CKP sensor connector. • Connect the voltmeter between the CKP sensor connector terminals B and C (sensor- • Inspect the voltage in the AC range while cranking the engine. • Is there any voltage? Yes Go to the next step. No Go to step 10. 4 INSPECT CKP SENSOR CONNECTOR FOR • Verify that the CKP sensor connector is connected securely. • Is connector normal? Yes Go to the next step. No Reconnect the connector, then go to Step 11. 5 INSPECT CKP CIRCUIT FOR SHORT TO • Turn ignition switch OFF • Disconnect the CKP sensor connector. • Turn ignition switch to the ON position (Engine off). • Measure the voltage between following terminals (harness-side): — CKP sensor terminal A — CKP sensor terminal B • Is there any voltage? Yes Repair or replace the suspected wiring harness, then go to No Go to the next step. 6 INSPECT CKP CIRCUIT FOR SHORT TO • Inspect for continuity between following terminal and body ground: side) — CKP sensor connector terminal B (harness- side) • Is there continuity? Yes Repair or replace the suspected wiring harness, then go to No Go to the next step. 7 INSPECT CKP CIRCUITS FOR SHORT CIRCUIT • Inspect for continuity between CKP sensor connector terminals B and C (harness-side). • Is there continuity? Yes Repair or replace the suspected wiring harness, then go to No Go to the next step. 8 INSPECT PCM CONNECTOR FOR POOR • Disconnect the PCM connector. • Inspect for poor connection (such as damaged/ pulled-out pins, corrosion). • Is there any malfunction? Yes Repair the terminal, then go to Step 11. No Go to the next step. 9 INSPECT CKP CIRCUIT FOR OPEN CIRCUIT • Inspect for continuity between the following circuits: — CKP sensor terminal A (harness-side) and PCM terminal 2P (harness-side) — CKP sensor terminal B (harness-side) and PCM terminal 2W (harness-side) — CKP sensor terminal C (harness-side) and main relay • Are there continuity? Yes Go to Step 11. No Repair or replace the suspected wiring harness, then go to 1871-1U-06B(01-02).fm 127 ページ 2006年3月15日 水曜日 午前10時32分 |