Index Isuzu Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross - service repair manual 1999-2002 year
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6E–400 TROOPER 6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS DTC P1153 – HO2S Insufficient Switching Bank 2 Sensor 1 (Cont'd) Step No Yes Value(s) Action 11 Replace the exhaust pipes, as required. Is your action complete? — Go to Step 2 — 12 Check for leaks at the exhaust manifold. Are there leaks at the exhaust manifold? — Go to Step 13 Go to Step 14 13 Tighten the bolts to specifications or replace the Is your action complete? — Go to Step 2 — 14 Visually/physically inspect the following items: D Ensure that the Bank 2 HO2S 1 is securely D Check for corrosion on terminals. D Check the terminal tension at Bank 2 HO2S 1 and D Check for damaged wiring. Was a problem found in any of the above areas? — Verify repair Go to Step 15 15 1. Disconnect Bank 2 HO2S 1. check the voltage between the high signal circuit Are both voltages in the specified range? 3-4V Go to Step 18 Go to Step 16 16 1. Ignition “ON”. Was a problem found? — Verify repair Go to Step 17 17 Check for short to voltage or ground or an open in the Was a problem found? — Verify repair Go to Step 18 18 1. Ignition “OFF”. signal circuits shorted together between the PCM Was a problem found? — Verify repair Go to Step 19 19 With the PCM connected and Bank 2 HO2S 1 Is the voltage in the specified range? 425-475 mV Go to Step 21 Go to Step 22 20 Replace affected heated oxygen sensors. NOTE: Before replacing sensors, the cause of the D Fuel contamination. D Use of improper RTV sealant. D Engine oil/coolant consumption. Is the action complete? — Verify repair — |