Diagnostic Aids

Typical causes of the TCS indicator Lamp inoperative with no DTC(s) set are as following.

1. Faulty ABS warning lamp bulb/loose socket.
2. F12 fuse open.
3. Faulty EBCM.
4. Grounded circuit between the EBCM and the Cluster.

Fig 1: TCS Warning Lamp Inoperative/No DTC Set Diagnostic Chart

Courtesy of SUZUKI OF AMERICA CORP.