| CHECK HARNESS BETWEEN ECM AND DPF PRESSURE DIFFERENTIAL SENSOR CONNECTOR. |
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1) Turn the ignition switch to OFF. 2) Disconnect the connectors from ECM and DPF pressure difference sensor. 3) Measure the resistance of harness between ECM connector and DPF pressure difference sensor connector. Connector & terminal (B134) No. 56 — (B472) No. 3: (B134) No. 72 — (B472) No. 2: |
| QUESTION | |
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Is the resistance less than 1 Ω? | |
| Yes | No |
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Repair the harness and connector. NOTE: In this case, repair the following item: • Open circuit in harness between ECM connector and DPF pressure difference sensor connector • Poor contact of coupling connector |
