TCS/ESP indicator lamp: Notes

Fig 1: Identifying TCS/ESP Indicator Lamp Communication Flow Line

Courtesy of SAAB-SCANIA OF AMERICA, INC.

Fig 2: TCS/ESP Indicator Lamp - Circuit Diagram

Courtesy of SAAB-SCANIA OF AMERICA, INC.

The TCS/ESP function lamp is on the LH side of the main instrument (in the tachometer). The lamp comes on when the system is in TCS/ESP control. If any fault occurs in the TC/ABS or ESP system, the TCS/ESP OFF indicator lamp is lit via the P-bus.

The function lamp is light by the TC/ABS or ESP control module sending information on the P-bus.

The lamp comes on via TCS/ESP control after a slight delay (300 ms) and is then lit as long as the system is active, but at least one second. When the ignition is turned on, the function lamp lights for 3-5 seconds.