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DIESEL CONTROL SYSTEM FLA -99 POWER CIRCUIT INSPECTION E49AC5F5 1. IG KEY "OFF", ENGINE "OFF". 2. Disconnect Lambda sensor connector. 3. IG KEY "ON". 4. Measure the voltage of Lambda sensor connector terminal 2. Specification : 11.0V~13.0V ( Main relay ON power ) 5. Is the measured voltage within the specification? YES ▶ Go to "Control Circuit Inspection". NO ▶ Repair open in Main relay power circuit and E/R FUSE & RELAY BOX 10A SNSR fuse and go to "Verification of CONTROL CIRCUIT INSPECTION E52130AC 1. Check Lambda sensor heater control circuit voltage 1) IG KEY "OFF", ENGINE "OFF". 2) Disconnect Lambda sensor connector. 3) IG KEY "ON". 4) Measure the voltage of Lambda sensor connector terminal 5. Specification : 2.0V~2.5V 5) Is the measured voltage within the specification? YES ▶ Go to "Component Inspection". NO ▶ No voltage is detected : Go to "2. Check open in Lambda sensor heater control circuit" as follows. 2. Check open in Lambda sensor heater control circuit 1) IG KEY "OFF", ENGINE "OFF". 2) Disconnect Lambda sensor connector and ECM connector. 3) Check continuity between Lambda sensor connector terminal 5 and ECM connector terminal 51. Specification : Continuity (below 1.0Ω ) |