TROUBLE DIAGNOSES - Diagnostic Procedure 23 (Cont'd)
EF & EC-4013flowchartDiagnostic Procedure 23 (Cont'd)
1
INSPECTION START
2
CHECK POWER SUPPLY. 1) Disconnect camshaft position sensor harness connector. 2) Turn ignition switch ON. 3) Check voltage between terminal e and ground. Voltage: Battery voltage
NG
Check the following: Harness connectors F21, M17 (LHD models); Harness connectors F28, M23 (RHD models); Harness connectors M59, E55 (LHD models); Harness connectors M3, E1 (RHD models); Harness continuity between camshaft position sensor and ECCS relay; 25A fusible link; Harness continuity between 25A fusible link and ECCS relay. 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 connectors M59, E55 (LHD models); Harness connectors M3, E1 (RHD models); Harness continuity between camshaft position sensor and ECCS relay; 25A fusible link; Harness continuity between 25A fusible link and ECCS relay. If NG, replace fusible link or repair harness or connectors.
OK
3
CHECK GROUND CIRCUIT. 1) Turn ignition switch OFF. 2) Check harness continuity between terminal f and engine ground. Continuity should exist.
NG
Repair harness or connectors.
OK
4
CHECK INPUT SIGNAL CIRCUIT. 1) Reconnect camshaft position sensor harness connector. 2) Start engine. 3) Read camshaft position sensor signals in DATA MONITOR mode with CONSULT. rpm: 800±50. OR 1) Disconnect ECM harness connector. 2) Check harness continuity between camshaft position sensor terminal d and ECM terminals 22, 30 (Australia), 31, 40 (Except Australia) (180° signal). Continuity should exist.
NG
same as step 3
OK
5
CHECK COMPONENT (Camshaft position sensor). Refer to Electrical Components Inspection.
NG
Replace camshaft position sensor.
OK
6
Check ECM pin terminals for damage or poor connection of ECM harness connector.
See also
EF & EC-4039