Cruise Control Switch Circuit

CRUISE CONTROL: CRUISE CONTROL SYSTEM: Cruise Control Switch Circuit

Cruise Control Switch Circuit

DESCRIPTION

The cruise control main switch operates seven functions: SET, '-' (COAST), TAP-DOWN, RESUME, '+' (ACCEL), TAP-UP, and CANCEL. The SET, TAP-DOWN and COAST functions, and the RESUME, TAP-UP and ACCEL functions are operated with the same switch. The cruise control main switch is an automatic return type switch which turns on only while operating it in each arrow direction and turns off after releasing it. The internal contact point of the cruise control main switch is turned on with the switch operation. Then the ECM reads the voltage that has been changed by the switch operation to control SET, '-' (COAST), RESUME, '-' (ACCEL) and CANCEL.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHOOSE DIAGNOSIS METHOD
(a) Choose the diagnosis method.





B -- INSPECT CRUISE CONTROL MAIN SWITCH ASSEMBLY
A -- Continue to next step.
2. READ VALUE USING TECHSTREAM




(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Enter the following menus: Powertrain / Cruise Control / Data List.
(d) Check the Data List for proper functioning of the cruise control main switch.

ECM (Cruise Control)





OK:
When the cruise control main switch is operated, the display changes as shown above.
Result:





C -- REPLACE CRUISE CONTROL MAIN SWITCH ASSEMBLY
A -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
B -- Continue to next step.
3. INSPECT CRUISE CONTROL MAIN SWITCH ASSEMBLY
(a) Disconnect the cruise control main switch connector.




(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:





*1: Lever is in neutral position
(c) Reconnect the cruise control main switch connector.
NG -- REPLACE CRUISE CONTROL MAIN SWITCH ASSEMBLY
OK -- Continue to next step.
4. INSPECT STEERING PAD SWITCH LH
(a) Disconnect the e1 connector from the spiral cable.




(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:





NG -- REPLACE STEERING PAD SWITCH LH
OK -- Continue to next step.
5. INSPECT SPIRAL CABLE SUB-ASSEMBLY




(a) Disconnect the spiral cable connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:





(c) Reconnect the spiral cable connector.
NG -- REPLACE SPIRAL CABLE SUB-ASSEMBLY
OK -- Continue to next step.
6. CHECK WIRE HARNESS (SPIRAL CABLE - ECM AND BODY GROUND)




(a) Disconnect the ECM connector.
(b) Disconnect the spiral cable connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:





(d) Reconnect the spiral cable connector.
(e) Reconnect the ECM connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE ECM