Engine Control System

Self-diagnosis LED indicates trouble code 19:

Most likely a problem in the Lock-Up Control Solenoid Circuit.

Fig. 12 CODE 19 Lock-Up Control Solenoid Valve (A/T Only):

The Check Engine warning light and ECU LED may come on, indicating a system problem, when, in fact, there is a poor or intermittent electrical connection. First, check the electrical connections, clean or repair connections if necessary.