Diagnostic Procedure 29 (Cont'd)
EF & EC-491flowchartSR20DE engine. L.H.D. models use terminal 6, R.H.D. models use terminal 9 on combination meter harness connector.
Diagnostic Procedure 29 (Cont'd)
1
INSPECTION START
2
CHECK OVERALL FUNCTION. 1) Jack up front wheels. 2) Disconnect E.C.U. harness connector. 3) Rotate front wheel by hand. 4) Check harness continuity between E.C.U. terminal 32 and body ground. Continuity should come and go.
O.K.
INSPECTION END
N.G.
3
CHECK SPEEDOMETER FUNCTION. Make sure that speedometer functions properly.
N.G.
Check vehicle speed sensor and circuit. (Refer to EL section.)
O.K.
4
CHECK INPUT SIGNAL CIRCUIT. 1) Reconnect E.C.U. harness connector. 2) Read vehicle speed sensor signal in "DATA MONITOR" mode with CONSULT. CONSULT value should be the same as the speedometer indication. -OR- 1) Turn ignition switch "OFF". 2) Disconnect combination meter harness connector. 3) Check harness continuity between E.C.U. terminal 32 and terminal 6 (L.H.D. models), terminal 9 (R.H.D. models). Continuity should exist.
N.G.
Check the following. Harness connectors F33, M37. Harness continuity between E.C.U. and combination meter. If N.G., repair harness or connectors.
O.K.
5
Check E.C.U. pin terminals for damage or the connection of E.C.U. harness connector.