DTC 1105

IMPROPER SHIFTING TO 3RD GEAR POSITION

DESCRIPTION
- This is a "failure" item indicated by the MIL.
- This is indicated when the vehicle is being driven at any gear position other than 3rd while the A/T control unit is instructing the A/T to shift the gear in the 3rd position.
- The detected item, "A/T 3RD SIGNAL", is not determined as a fault unless the A/T control unit self-diagnosis system is in the "No Failure" condition. When "A/T 3RD SIGNAL" is displayed, it indicates that the gears are not properly shifted. The problem is not caused by electrical failure of the A/T (circuits open or shorted) but by mechanical failure (control valve sticking, improper solenoid valve operation, malfunctioning servo piston or brake band, etc.).

OVERALL FUNCTION CHECK
After the repair, perform the following procedure to confirm the malfunction is eliminated.

WITH CONSULT
1. Start engine and warm up ATF.




2. Select "SELF-DIAG RESULTS" mode for ECM with CONSULT.
3. Start vehicle with selector lever in D and throttle opening halfway. Check that vehicle runs through gear shift of D1 -> D2 -> D3 -> D4, in accordance with shift schedule. Refer to shift schedule.

OR

WITH GST
1. Start engine and warm up ATF.
2. Start vehicle with selector lever in D and throttle opening halfway. Check that vehicle runs through gear shift of D1 -> D2 -> D3 -> D4, in accordance with shift schedule. Refer to shift schedule.




3. Select "MODE 3" with GST.

OR

WITH NO TOOLS
1. Start engine and warm up ATF.
2. Start vehicle with selector lever in D and throttle opening halfway. Check that vehicle runs through gear shift of D1 -> D2 -> D3 -> D4, in accordance with shift schedule. Refer to shift schedule.










3. Perform self-diagnosis for ECM.




DIAGNOSTIC PROCEDURE