Component Tests and General Diagnostics

Do not use a test lamp to perform the following tests as excessive current draw will damage electronic components inside the amplifier. Use only a high impedance digital multi-meter.

Fig. 2 Speed Control Troubleshooting Chart Using ACC Checker:

1. To connect ACC checker No. 499200010, proceed as follows:
a. Depress lock hook of the harness connector.
b. Ensure ignition is turned off, then remove connector from ACC control unit.
c. Connect harness connector to ACC harness connector.
2. Check speed control components as shown in Fig. 2.
3. If there is a malfunction in the speed control system, and no problem is found when using the ACC checker, replace the cruise control unit.