DR-11C Checking For No Code 88

1. With diagnostic readout box disconnected from engine harness connector, turn ignition switch Off, then disconnect 14-way connector from computer.
2. Connect an ohmmeter between cavity 4 of engine harness connector and cavity 1 of computer 14-way connector.
3. If ohmmeter shows continuity, replace computer. Before replacing computer, ensure terminals of cavity 1 are making a good connection.
4. If ohmmeter shows no continuity, locate and repair open circuit in wire of cavity 1.