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Geely Emgrand X7. Manual part - 69
A. Turn the ignition switch to the OFF position. B. Disconnect speed sensor wiring harness connector EM21. C. Turn the ignition switch to the ON position. D. Measure voltage between vehicle speed sensor harness connector Standard value :7-9V 车速传感器线束连接器 EM21 1 2 3 NL02-0059c Is the value specified value?
3 Inspect the vehicle speed signal circuit. A. Turn the ignition switch to the OFF position. B. Disconnect speed sensor wiring harness connector EM21. C. Disconnect ECM harness connector EM01. D. Measure resistance between the vehicle speed sensor harness connector EM21 terminal No.3 and ECM harness connector EM01 terminal No.51. Inspect whether the circuit is open. E. Measure resistance between the vehicle speed sensor harness connector EM21 terminal No.3 and a reliable ground. Inspect whether the circuit is short to ground. F. Measure voltage between the vehicle speed sensor harness connector EM21 terminal No.3 and reliable ground with multimeter. Inspect whether the circuit is short to power supply. Tester Connection Standard Value Resistance Between EM21 (3) and EM01 (51) Less than 1 Ω Resistance Between EM21 (3) and Ground 10 kΩ or higher Voltage Between EM21 (3) and Ground 0V Are the values specified values?
4 Inspect the vehicle speed sensor ground circuit. No Repair or replace the wire Go to step 7 Yes No Repair the circuit between the vehicle speed sensor Yes Speed sensor harness connectorEM21 275 |