DTC 0504

DESCRIPTION
These circuit lines are used to control the smooth shifting up and down of A/T during the hard acceleration/deceleration. Voltage signals are exchanged between ECM and A/T control unit.

NOTE: Freeze frame data is not stored in the ECM for the "A/T control". The MIL will not light for "A/T control" malfunction.




DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE

NOTE: If any diagnostic trouble code is displayed performing self-diagnosis for A/T, perform the trouble diagnosis for the DTC first.

With Consult
1) Jack up drive wheels.
2) Make sure that selector lever is set in "P" or "N" position.
3) Turn ignition switch "ON".
4) Select "DATA MONITOR" mode with CONSULT.
5) Start engine and rise engine speed to more than 1,000 rpm at once.
6) Run engine for at least 10 seconds at idle speed.
7) Run engine for at least 10 seconds at 2,000 rpm.
8) Set selector lever in "D" position and run engine for at least 10 seconds at idle speed (with vehicle stopped).
9) Drive vehicle at 12 to 20 km/h (7 to 12 MPH) for at least 10 seconds in "D" position.

OR

With GST
4) Start engine and rise engine speed to more than 1,000 rpm at once.
5) Run engine for at least 10 seconds at idle speed.
6) Run engine for at least 10 seconds at 2,000 rpm.
7) Set selector lever in "D" position and run engine for at least 10 seconds at idle speed (with vehicle stopped).
8) Drive vehicle at 12 to 20 km/h (7 to 12 MPH) for at least 10 seconds in "D" position.
9) Select "Mode 3" with GST.

OR

Without Scan Tools
4) Start engine and rise engine speed to more than 1,000 rpm at once.
5) Run engine for at least 10 seconds at idle speed.
6) Run engine for at least 10 seconds at 2,000 rpm.
7) Set selector lever in "D" position and run engine for at least 10 seconds at idle speed (with vehicle stopped).
8) Drive vehicle at 12 to 20 km/h (7 to 12 MPH) for at least 10 seconds in "D" position.
9) Turn ignition switch "OFF", wait at least 5 seconds and then turn "ON".
10) Perform "Diagnostic Test Mode II (Self-diagnostic results)" with ECM.




WIRING DIAGRAM




DIAGNOSTIC PROCEDURE