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TROUBLESHOOTING MULTIPORT FUEL INJECTION (MPI) 13A-359 STEP 8. Perform voltage measurement at C-121 • Measure engine-ECU terminal voltage. • Disconnect B-103 and B-114 ignition coil connec- tors. • Engine: Cranking • Voltage between terminal No. 11 and earth, also between terminal No. 12 and earth. OK: 0.5 − 4.0 V Q: Is the check result normal? YES : Go to Step 9 . NO : Go to Step 10 . STEP 9. Connector check: C-121 engine-ECU Q: Is the check result normal? YES : Check and repair harness between B-114 (terminal No. 3) ignition coil connector and • Check output line for open circuit. NO : Repair or replace the connector. AK502032 2 3 4 5 6 7 8 9 11 12 13 14 15 16 17 18 19 20 30 21 22 23 24 25 26 27 28 29 31 32 33 34 35 1 10 AB Connector: C-121 C-121 (GR) Harness side connector AK305047 1 2 3 Connector : B-103, B-114 B-114(GR) B-103(GR) AB Harness side AK502032 2 3 4 5 6 7 8 9 11 12 13 14 15 16 17 18 19 20 30 21 22 23 24 25 26 27 28 29 31 32 33 34 35 1 10 AB Connector: C-121 C-121 (GR) Harness side connector AK305047 1 2 3 Connector : B-103, B-114 B-114(GR) B-103(GR) AB Harness side |