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− 01 02 SJC8A00K77100090141FAAT30 − − − − − − − − DTC P0141: DTC P0161: YES NO YES NO YES NO YES NO 11-92 PGM-FI System DTC Troubleshooting (cont’d) SECONDARY HO2S (SENSOR 2) 4P CONNECTOR SECONDARY HO2S (SENSOR 2) 4P CONNECTOR Rear Secondary HO2S (Bank 1, Sensor 2) Heater Circuit Malfunction Front Secondary HO2S (Bank 2, Sensor 2) Heater Circuit Malfunction NOTE: • Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general • Information marked with an asterisk ( ) applies to the front bank (Bank 2). 1. Turn the ignition switch ON (II). 2. Clear the DTC with the HDS. 3. Start the engine. 4. Check for Temporary DTCs or DTCs with the HDS. Go to step 5. Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals 5. Turn the ignition switch OFF. 6. Check these fuses: • No. 17 OP1 (40 A) fuse in the under-hood fuse/ relay box • No. 4 LAF (A/F SENSOR) (15 A) fuse in the under- dash fuse/relay box • No. 23 IGP (7.5 A) fuse in the under-dash fuse/ relay box Repair short in the wire between the A/F sensors, A/F sensor relay (LAF) and the fuse, then Go to step 7. 7. Disconnect the secondary HO2S (Sensor 2) 4P connector. 8. At the secondary HO2S (Sensor 2) side, measure resistance between secondary HO2S (Sensor 2) 4P Go to step 9. Go to step 22. 9. Check for continuity between body ground and secondary HO2S (Sensor 2) 4P connector terminals Go to step 22. Go to step 10. Terminal side of male terminals Terminal side of male terminals Is DT C P0141 and/ or P0161 indicated? Ar e any of the f uses blown? Is ther e 5.4 6.6 at r oom temper atur e? Is ther e continuity? |