Scan Tool Testing and Procedures

CRUISE CONTROL SYSTEM:

DATA LIST / ACTIVE TEST

1. READ DATA LIST

HINT: Using Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

(a) Connect Techstream to the DLC3.
(b) Turn the ignition switch to the ON position.
(c) Turn Techstream main switch on.
(d) Select the following menu items: Powertrain / Cruise Control / Data List.
(e) Read the Data List according to the display on Techstream.

ECM (Cruise Control):





HINT: "3" is OK but "1" is NG -> ECM failure

"1" is OK but "2" is NG -> DTC output or ECM failure

"3" is OK but cruise indicator does not turn on -> CRUISE main indicator, wire harness, or ECM failure