Diagnosis Procedure

WARNING: This page is about a different variant/trim than selected.

DIAGNOSTIC PROCEDURE

Step	Action	YES	NO
1	CHECK CAN COMMUNICATION LINE Perform "DTC check". Refer to [SDT FUNCTION (AT) ]. Is any malfunction in the CAN communication indicated in the results?	Check CAN communication line. Refer to DTC U1000 CAN Communication Line .	GO TO 2.
2	CHECK OVERDRIVE CONTROL SWITCH CIRCUIT With SDT Turn ignition switch "ON". Select "ECU INPUT SIGNALS" in "Data list" mode for "AT" with SDT. Read out "OD CONT SW". Check the signal of the overdrive control switch is indicated properly. Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP. Without SDT Turn ignition switch "ON". (Do not start engine) Check voltage between A/T control device connector terminal and ground. Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP. Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP. OK or NG	GO TO 5.	GO TO 3.
3	CHECK OVERDRIVE CONTROL SWITCH Turn ignition switch "OFF". Disconnect A/T control device connector. Check continuity between A/T control device connector M156 terminals 7 and 8. Courtesy of SUZUKI OF AMERICA CORP. OK or NG	GO TO 4.	Repair or replace overdrive control switch.
4	DETECT MALFUNCTIONING ITEM Check the following. If any items are damaged, repair or replace damaged parts. Harness for short or open between combination meter connector terminal 20 and A/T control device connector terminal 7. Harness for short or open between A/T control device connector terminal 8 and ground. OK or NG	GO TO 5.	Repair or replace damaged parts.
5	CHECK COMBINATION METER Check the combination meter. Refer to [METER SYSTEM: SYSTEM DESCRIPTION ] OK or NG	INSPECTION END	Repair or replace damaged parts.