TROUBLE DIAGNOSES - Diagnostic Procedure 26 (Cont'd)
EF & EC-4019flowchartDiagnostic Procedure 26 (Cont'd)
1
INSPECTION START
2
CHECK POWER SUPPLY. 1) Disconnect ignition coil harness connector. 2) Turn ignition switch ON. 3) Check voltage between ignition coil terminal a and ground. Voltage: Battery voltage
NG
Check the following: Harness connectors F21, M17 (LHD models); Harness connectors F28, M23 (RHD models); Harness continuity between ignition coil and ignition switch; Condition and operation of ignition switch; Harness connectors M3, E1 (RHD models); Harness connectors M59, E55 (LHD models); 30A fusible link; Harness continuity between fusible link and ignition switch. If NG, replace fusible link or repair harness or connectors.
Check the following: Harness connectors F21, M17 (LHD models); Harness connectors F28, M23 (RHD models); Harness continuity between ignition coil and ignition switch; Condition and operation of ignition switch; Harness connectors M3, E1 (RHD models); Harness connectors M59, E55 (LHD models); 30A fusible link; Harness continuity between fusible link and ignition switch. If NG, replace fusible link or repair harness or connectors.
OK
3
CHECK GROUND CIRCUIT. 1) Turn ignition switch OFF. 2) Disconnect resistor harness connector. 3) Disconnect power transistor harness connector. 4) Check harness continuity between ignition coil terminal b and resistor terminal c. Continuity should exist. 5) Check harness continuity between power transistor terminal f and engine ground. Continuity should exist.
NG
Repair harness or connector.
OK
4
CHECK INPUT SIGNAL CIRCUIT. 1) Disconnect ECM harness connector. 2) Check harness continuity between resistor terminal d and ECM terminal 3. Continuity should exist.
NG
same as step 3
OK
5
CHECK OUTPUT SIGNAL CIRCUIT. 1) Check harness continuity between power transistor terminal e and ECM terminal 1. Continuity should exist.
NG
Repair harness or connectors.
OK
6
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