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CHASSIS ELECTRICAL - Combination Meter 54A-17 Inspection procedure 3 Fuel gauge inoperative (other meters are operated) Probable cause When speedometer and tachometer are properly operated, harness from power source to combination meter is normal. D Fuel gauge unit fault D Harness or connector fault D Meter assembly fault OK Replace main fuel gauge unit. NG Check harness from main fuel gauge unit to combination meter. Repair Check trouble symptom. Main fuel gauge circuit check Disconnect main fuel gauge unit connector D-09. D Use special tool on connector at the harness side to connect test lamp (12V – 3.4W). (Refer to Fig. 1) D Ignition switch: ON (1) Is test lamp ON? OK: Illuminated (2) Is fuel gauge pointer swinging to the haft range. OK: Swinging (1) NG Fig. 1 MB991219 Earth Fuel gauge Test lamp (12V-3.4W) Repair Check trouble symptom. Check the following connectors: C-02, D-26, C-146, D-30, D-27, D-09 Earth Test lamp (12V-3.4W) Fuel gauge MB991219 Fig. 2 Sub fuel gauge circuit check Disconnect sub fuel gauge unit connector D-27. D Use special tool on connector at the harness side to connect test lamp (12V – 3.4W). (Refer to Fig. 2) D Ignition switch: ON (1) Is test lamp ON? OK: Illuminated (2) Is fuel gauge pointer swinging to the haft range. OK: Swinging Replace meter assembly OK (2) NG (2) NG Check trouble symptom. Replace meter assembly NG Replace main fuel gauge unit. (1) NG OK NG (2) NG |