P1605
CIRCUIT DESCRIPTIONThis circuit line (LAN) controls the smooth shifting up and down of A/T during the hard acceleration/deceleration. Pulse signals are exchanged between ECM and TCM (P0600).
This circuit line is also used to communicate malfunction information related to A/T (Automatic Transmission) is transferred through the line (LAN circuit) from TCM to ECM (P1605).
Be sure to erase the malfunction information such as DTC not only in TCM but also ECM after the A/T related repair.
ON BOARD DIAGNOSIS LOGIC
DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE
NOTE: If "DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE" has been previously conducted, always turn ignition switch "OFF" and wait at least 5 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5V.
With Consult
1) Turn ignition switch "ON".
2) Select "DATA MONITOR" mode with CONSULT
3) Start engine and let it idle for at least 2 seconds (P0600) and 40 seconds (P1605).
OR
With Generic Scan Tool
1) Start engine and let it idle for at least 2 seconds (P0600) and 40 seconds (P1605).
2) Select "MODE 7" with GST.
OR
Without Scan Tools
1) Start engine and let it idle for at least 2 seconds (0504) and 40 seconds (0804).
2) Turn ignition switch "OFF", wait at least 5 seconds and then turn "ON".
3) Perform "Diagnostic Test Mode II (Self-diagnostic results)" with ECM
DIAGNOSTIC PROCEDURE
WIRING DIAGRAM