Engine Speed Signal Circuit Check

Description
The engine speed signal is sent from the ECM to the A/T control unit.




Diagnostic Trouble Code (DTC) confirmation procedure
After the repair, perform the following procedure to confirm the malfunction is eliminated.

With Consult



1. Start engine.
2. Select "SELF-DIAG RESULTS" mode with CONSULT.
3. Drive vehicle under the following conditions:
Selector lever in D, vehicle speed higher than 10 KPH (6 MPH), throttle opening greater than 1/8 of the full throttle position and driving for more than 10 seconds.

OR

With Generic Scan Tool



1. Start engine.
2. Drive vehicle under the following conditions:
Selector lever in D, vehicle speed higher than 10 KPH (6 MPH), throttle opening greater than 1/8 of the full throttle position and driving for more than 10 seconds.
3. Select "MODE 3" with GST.

OR

Without Tools



1. Start engine.
2. Drive vehicle under the following conditions:
Selector lever in D, vehicle speed higher than 10 KPH (6 MPH), throttle opening greater than 1/8 of the full throttle position and driving for more than 10 seconds.
3. Perform self-diagnosis.
Refer to SELF-DIAGNOSTIC PROCEDURE (No Tools).
Self-Diagnostic Procedure (No Tools)


Circuit Inspection