Code B338, Loss Of Chime/Voice Serial Data (TORONADO Only)

This code will only occur if the vehicle is equipped with the optional voice module. If the vehicle is not equipped with a voice module and the code sets, replace the EE PROM.

The code will set if the ignition is on and the voice module loses +12 volts or ground, or there is a double open in the circuit No. 800. All terminal contacts should be checked prior to replacing any parts.

1. Checks for power and ground source up to the module. The test light should be on for both terminals.
2. Checks for +7 volts up to the module. The +7 volts is necessary to generate serial data.
3. If all power and ground sources are good, faulty terminal contacts should be checked prior to replacing any parts.

Fig 1: Code B338, Loss of Chime/Voice Serial Data (Toronado Only)

Fig 2: Code B338, Schematic