CRUISE CONTROL SYSTEM > Cruise Control Switch Circuit

for Preparation Click here


DESCRIPTION

The cruise control switch operates 7 functions: SET, - (COAST), TAP-DOWN, RES (RESUME), + (ACCEL), TAP-UP, and CANCEL. The SET, TAP-DOWN, and - functions, and the RES, TAP-UP, and + functions are operated with the same switch. The cruise control switch is an automatic return type switch which turns on only while it is being operated it in the direction of each arrow and turns off after being released. The internal contact point of the cruise control switch is turned on with the switch operation. Then the power management control ECU reads the voltage value that has been changed by the switch operation to control the SET, -, RES, +, and CANCEL functions.

WIRING DIAGRAM


E223075E01


INSPECTION PROCEDURE

1.READ VALUE USING INTELLIGENT TESTER


    E107091E21

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

  1. Turn the intelligent tester on.

  1. Enter the following menus: Powertrain / Cruise Control / Data List.

  1. Check the Data List to confirm proper function of the cruise control switch.

    Cruise Control 
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Main SW M-CPU
    		Cruise control switch (Main CPU) / ON or OFF
    		ON: Cruise control switch on
    OFF: Cruise control switch off
    		-
    Cancel Switch
    		CANCEL switch signal / ON or OFF
    		ON: CANCEL switch on
    OFF: CANCEL switch off
    		-
    SET/COAST Switch
    		-/SET switch signal / ON or OFF
    		ON: -/SET switch on
    OFF: -/SET switch off
    		-
    RES/ACC Switch
    		+/RES switch signal / ON or OFF
    		ON: +/RES switch on
    OFF: +/RES switch off
    		-
    Main SW S-CPU
    		Cruise control switch (S-CPU) / ON or OFF
    		ON: Cruise control switch on
    OFF: Cruise control switch off
    		-
    Text in Illustration 
    *a
    		ON/OFF
    *b
    		-/SET
    *c
    		+/RES
    *d
    		CANCEL

    OK:
    When the cruise control switch is operated, the display changes as shown above.
    Result 
    Result
    		Proceed to
    OK
    		A
    NG (All items are defective)
    		B
    NG (1 to 4 items are defective)
    		C



B
Go to step 2

C
REPLACE CRUISE CONTROL SWITCH (Click here)
A

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (Click here)  

2.INSPECT CRUISE CONTROL SWITCH


  1. Remove the cruise control switch (Click here).


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  1. Measure the resistance according to the value(s) in the table below.


Standard Resistance:

Tester Connection
Switch Condition
Specified Condition
1 - 3
Cruise control switch off
1 MΩ or higher
Cruise control switch on
Below 2.5 Ω
+/RES
235 to 245 Ω
-/SET
617 to 643 Ω
CANCEL
1509 to 1571 Ω


Text in Illustration 
*1
Cruise Control Switch (ON-OFF button)
-
-
*a
Component without harness connected
(Cruise Control Switch)
*b
ON-OFF
*c
+/RES
*d
-/SET
e
CANCEL
-
-

  1. Reinstall the cruise control switch (Click here).



NG
REPLACE CRUISE CONTROL SWITCH (Click here)
OK


3.CHECK HARNESS AND CONNECTOR (CRUISE CONTROL SWITCH - SPIRAL CABLE SUB-ASSEMBLY)
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  1. Disconnect the spiral with sensor cable sub-assembly connector.

  1. Disconnect the cruise control switch connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance (Check for Open):
    Tester Connection
    		Condition
    		Specified Condition
    Cruise control switch side connector terminal 3 - z5-3
    		Always
    		Below 1 Ω
    Cruise control switch side connector terminal 1 - z5-4
    		Always
    		Below 1 Ω

    Text in Illustration 
    *a
    		Front view of wire harness connector
    (to Spiral with Sensor Cable Sub-assembly)
    *b
    		Front view of wire harness connector
    (to Cruise Control Switch)

  1. Reconnect the cruise control switch connector.

  1. Reconnect the spiral with sensor cable sub-assembly connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (CRUISE CONTROL SWITCH - SPIRAL CABLE SUB-ASSEMBLY)
OK


4.CHECK SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY
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NOTICE:
The spiral with sensor cable sub-assembly is an important part of the SRS airbag system. Incorrect removal or installation of the spiral with sensor cable sub-assembly may cause airbag deployment. Be sure to read the page shown in the link/brackets.

  1. Remove the spiral with sensor cable sub-assembly (Click here).

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance (Check for Open):
    Tester Connection
    		Condition
    		Specified Condition
    z5-3 - H30-1 (CCS)
    		The spiral with sensor cable sub-assembly is centered
    		Below 1 Ω
    The spiral with sensor cable sub-assembly position is 2.5 rotations to the left
    The spiral with sensor cable sub-assembly position is 2.5 rotations to the right
    z5-4 - H30-2 (ECC)
    		The spiral with sensor cable sub-assembly is centered
    		Below 1 Ω
    The spiral with sensor cable sub-assembly position is 2.5 rotations to the left
    The spiral with sensor cable sub-assembly position is 2.5 rotations to the right

    Text in Illustration 
    *a
    		Component without harness connected
    (Spiral with Sensor Cable Sub-assembly)

    HINT:
    The spiral with sensor cable sub-assembly makes a maximum of approximately 5 rotations.

  1. Reinstall the spiral with sensor cable sub-assembly (Click here).



NG
REPLACE SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY (Click here)
OK


5.CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - POWER MANAGEMENT CONTROL ECU)

  1. Disconnect the power management control ECU connector.

  1. Disconnect the spiral with sensor cable sub-assembly connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance (Check for Open):
    Tester Connection
    		Condition
    		Specified Condition
    H30-1 (CCS) - H4-22 (CCS)
    		Always
    		Below 1 Ω

    Standard Resistance (Check for Short):
    Tester Connection
    		Condition
    		Specified Condition
    H30-1 (CCS) or H4-22 (CCS) - Body ground
    		Always
    		10 kΩ or higher

  1. Reconnect the spiral with sensor cable sub-assembly connector.

  1. Reconnect the power management control ECU connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - POWER MANAGEMENT CONTROL ECU)
OK


6.CHECK HARNESS AND CONNECTOR (SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY - BODY GROUND)


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  1. Disconnect the spiral with sensor cable sub-assembly connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance (Check for Open):
    Tester Connection
    		Condition
    		Specified Condition
    H30-2 (ECC) - Body ground
    		Always
    		Below 1 Ω

    Text in Illustration 
    *a
    		Front view of wire harness connector
    (to Spiral with Sensor Cable Sub-assembly)

  1. Reconnect the spiral with sensor cable sub-assembly connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY - BODY GROUND)
OK

REPLACE POWER MANAGEMENT CONTROL ECU (Click here)