CVT Model
DTC detecting condition:
Detected when two consecutive driving cycles with fault occur.
Trouble symptom:
Improper idling
Wiring diagram:
Engine Electrical System Ref. to WIRING SYSTEM>ENGINE ELECTRICAL SYSTEM
Use the check board when measuring the ECM terminal voltage and resistance. Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>GENERAL DESCRIPTION>PREPARATION TOOL>HOW TO USE CHECK BOARD
After the faulty parts are repaired or replaced, perform the final check in Basic Diagnostic Procedure. Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE
- CHECK SELECT CABLE
.
Check the select cable. Ref. to CONTROL SYSTEMS>SELECT CABLE>INSPECTION
Is there any fault in select cable?
Yes : Repair or adjust the select cable. Ref. to CONTROL SYSTEMS>SELECT CABLE
No : Go to 2.
- CHECK INPUT SIGNAL OF ECM
.
- Turn the ignition switch to ON.
- Place the select lever in other than "P" range and "N" range.
- Measure the voltage between ECM connector and engine ground.
Connector & terminal
(E52) No. 12 (+) - Engine ground (-):
Is the voltage 10 V or more?
Yes : Repair the poor contact of ECM connector.
No : Go to 3.
- CHECK HARNESS BETWEEN ECM AND INHIBITOR SWITCH (SHORT TO GROUND)
.
- Turn the ignition switch to OFF.
- Disconnect the connector from ECM.
- Disconnect the connector from inhibitor switch.
- Measure the resistance between the ECM connector and engine ground.
Connector & terminal
(E52) No. 12 - Engine ground:
Is the resistance 1 MΩ or more?
Yes : Replace the inhibitor switch. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>INHIBITOR SWITCH
No : Repair the short circuit to ground in harness between ECM connector and inhibitor switch connector.