DTC 6

Self-diagnosis LED indicator blinks six times:

Most likely a problem in the Coolant Temperature (TW) Sensor Circuit.

Fig. 73 PGM-FI Self-diagnosis chart, warning lamp on-LED indicates code 6:

Fig. 73 PGM-FI Self-diagnosis chart, warning lamp on-LED indicates code 6:

The TW sensor is a temperature dependant resistor (thermistor). The resistance of the thermistor decreases as the coolant temperature increases as shown.

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.