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(P0131) O2 SENSOR 1/1 CIRCUIT LOW (CONTINUED) 9. JUMPER THE O2 SENSOR With the ignition off. Disconnect the O2 Sensor harness connector of the affected O2 Sen- Note: Check connectors — Clean/repair as necessary. Connect a jumper wire between ground and the O2 Sensor Signal cir- With the DRB III T , monitor the O2 Sensor Signal voltage. Does the O2 Sensor voltage stay between 0.4 and 0.6 volt? Yes >> Go To 10 No >> Go To 11 10. O2 SENSOR SIGNAL CIRCUIT OPEN Turn the ignition off. Disconnect the PCM harness connectors. Note: Check connectors — Clean/repair as necessary. Is the resistance below 5.0 ohms? Yes >> Replace and program the Powertrain Control Module. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL CONTROL MODULE - REMOVAL). Perform POWERTRAIN VERIFICATION TEST - VER 2. No >> Repair the O2 Sensor Signal circuit for an open. Perform POWERTRAIN VERIFICATION TEST - VER 2. ZH ENGINE - ELECTRICAL DIAGNOSTICS 9 - 129 |