"O/D OFF" Lamp Circuit Check: Troubleshooting

TROUBLESHOOTING CHART

Step	Action	Yes	No
1	Does "O/D OFF" lamp light steady?	Go to Step 2.	Go to Step 4.
2	Check O/D off switch circuit Turn ignition switch OFF and disconnect TCM connectors. Check resistance between terminal "G07-3" of disconnected harness side connector and ground with O/D off switch released. Is continuity indicated?	Go to Step 3.	Faulty combination meter or TCM. Inspect combination meter referring to O/D OFF INDICATOR LAMP (A/T VEHICLE ONLY) SYMPTOM DIAGNOSIS . If OK, substitute a know-good TCM and recheck.
3	Check O/D off switch (2) for operation Disconnect O/D off switch coupler (1). Check continuity between switch terminals under each condition. O/D off switch specification Released: No continuity Pressed: Continuity Fig 1: Checking Continuity Between Switch Terminals Courtesy of SUZUKI OF AMERICA CORP. Is check result satisfactory?	"GRN/BLK" circuit shorted to ground.	Replace O/D off switch.
4	Does not "O/D OFF" lamp light or blink even passing 60 seconds after turning ignition switch ON?	Faulty combination meter or TCM. Inspect combination meter referring to O/D OFF INDICATOR LAMP (A/T VEHICLE ONLY) SYMPTOM DIAGNOSIS . If OK, substitute a know-good TCM and recheck.	Go to Step 5.
5	Does "O/D OFF" lamp blink for 10 seconds and then go out?	"RED/YEL" circuit open or shorted to ground. If circuit is OK, faulty combination meter or TCM. Inspect combination meter referring to O/D OFF INDICATOR LAMP (A/T VEHICLE ONLY) SYMPTOM DIAGNOSIS . If OK, substitute a know-good TCM and recheck.	Go to Step 6.
6	Is "O/D OFF" lamp blinking steady for over 10 seconds?	Go to Step 7.	System is OK.
7	Check DTC Check DTC referring to "DTC CHECK :". Are there any DTC(s)?	Proceed to A/T Diagnostic Flow.	Faulty combination meter or TCM. Inspect combination meter referring to O/D OFF INDICATOR LAMP (A/T VEHICLE ONLY) SYMPTOM DIAGNOSIS . If OK, substitute a know-good TCM and recheck.