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Geely Emgrand X7. Manual part - 53
4 Read the front oxygen sensor data stream. (a) Start the vehicle. (b) Warm up the engine with normal idle speed. (c) Read the front oxygen sensor data stream with a fault diagnosis tester. Front oxygen sensor standard value: 0.2-0.8 V Is front oxygen sensor data normal?
Step 5 Observe the long-term fuel adjustment parameters. (a) Start the vehicle. (b) Warm up the engine. (c) Observe the long-term fuel adjustment parameter with a fault diagnosis tester. Is the long-term fuel adjustment parameter normal?
Step 6 Inspect engine system and its components. (a) Turn the ignition switch to OFF position. (b) Inspect the vacuum hose crack, kink or connections. (c) Inspect the intake manifold, throttle body and fuel injector vacuum leakage. (d) Inspect the crankshaft ventilation system leakage. (e) Inspect Fuel Contamination. (f) Inspect the working station of fuel system when the air-fuel ratio is too lean. (g) Inspect injector nozzle spray fuel too thin. (h) Inspect the fuel system working at Air-Fuel ratio too thick. (i) Inspect injector spray fuel too thick. (j) Inspect intake manifold collapse or obstruction. (k) Inspect whether there is excessive fuel in the crankcase. (l) Inspect evaporative emission control systems working condition. (m) Inspect working condition of other fault lamps in the instrument. Is engine System normal?
Yes The system is normal. No Yes The system is normal. No No Refer to 2.12.7.22 DTC P0131 P0132 P0133 Yes 211 |