Diagnostic Procedure 23 (Cont'd)
EF & EC-565flowchartTwo diagnostic paths for input signal circuit: with CONSULT (DATA MONITOR) or without CONSULT (continuity test). SR20DET section.
Diagnostic Procedure 23 (Cont'd)
1
INSPECTION START
2
A CHECK POWER SUPPLY. 1) Disconnect crank angle sensor harness connector. 2) Turn ignition switch "ON". 3) Check voltage between terminal 2 and ground. Voltage: Battery voltage
N.G.
Check the following. • Harness continuity between crank angle sensor and E.C.C.S. relay. If N.G., repair harness or connectors.
O.K.
3
B CHECK GROUND CIRCUIT. 1) Turn ignition switch "OFF". 2) Check harness continuity between terminal 1 and engine ground. Continuity should exist.
N.G.
Repair harness or connectors.
O.K.
4
C CHECK INPUT SIGNAL CIRCUIT. (With CONSULT) 1) Reconnect crank angle sensor harness connector. 2) Start engine. 3) Read crank angle sensor signals in "DATA MONITOR" mode with CONSULT. rpm: 925 +25/-75. OR (Without CONSULT) 1) Disconnect E.C.U. harness connector. 2) Check harness continuity between terminal 6 and E.C.U. terminals 31, 40 (1° signal), terminal 1 and E.C.U. terminals 22, 30 (180° signal). Continuity should exist.
N.G.
same as step 3
O.K.
5
CHECK COMPONENT (Crank angle sensor). Refer to "Electrical Components Inspection". (See page EF & EC-629.)
N.G.
Replace crank angle sensor.
O.K.
6
Check E.C.U. pin terminals for damage or the connection of E.C.U. harness connector.