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Geely Emgrand X7. Manual part - 52
(a) Rotated ignition switch to OFF position. (b) Disconnect the rear oxygen sensor wiring harness connector (c) Disconnect ECM harness (d) Test Continuity between rear oxygen sensor wiring harness ECM线束连接器 EM01 1 2 4 5 3 81 63 44 25 6 62 43 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 26 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 45 46 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 64 65 66 80 79 78 77 76 75 74 73 72 71 70 69 68 67 NL02-0033c Standard Resistance: Less than 1 Ω (e) Connect ECM harness connector EM01. (f) Connect the rear oxygen sensor wiring harness connector EM03. Is resistance the specified value?
(a) Inspect whether ECM power supply circuit is normal. (b) Inspect whether ECM ground circuit is normal.
Step 6 Replace ECM. Refer to 2.2.8.1 Replacement of Engine Control Module. (a) Replace ECM. (b) Carry out the crankshaft position sensor learning; refer to 2.2.7.11 “Crankshaft Position Sensor (CKP) Learning.
Step 7 Use fault diagnosis tester to confirm if DTC is stored again . (a) Connect the fault diagnosis tester to the diagnostic interface. (b) Turn ignition switch to ON position. (c) Clear DTC code. (d) Start and run the engine at idle speed to warm up the engine for at least 5 min. (e) test the vehicle on the road for at least 5min. Step 5 Inspect ECM working circuit. Yes No Repair the faulty part. Yes No ECM control circuit malfunction. Yes ECMharness connectorEM01 207 |