Cruise Control Switch Circuit: Procedure

1. Connect the Techstream to the DLC3.
   Fig 1: Identifying Cruise Control Main Switch Operation

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Cruise Control / Data List.
5. Check the Data List for proper functioning of the cruise control main switch.
   CRUISE CONTROL (POWER MANAGEMENT CONTROL ECU)
   
   

   Techstream Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Main SW M-CPU	Cruise control switch (Main CPU) / ON or OFF	ON: Cruise main switch on OFF: Cruise main 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	-

   TEXT IN ILLUSTRATION
   
   

   *1	ON/OFF
   *2	- SET
   *3	+ RES
   *4	CANCEL

   OK

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

   RESULT
   
   

   Result	Proceed to
   OK	A
   NG (All items are defective)	B
   NG (1 to 3 items are defective)	C

B → See step   2 

C → See step   8 

A → See step   7 

1. Remove the cruise control main switch. Refer to REMOVAL .
   Fig 2: Identifying Cruise Control Main Switch

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   1 - 3	Main switch off	1 MΩ or higher
   	Main 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	Component without harness connected (Cruise Control Main Switch)	*2	Main Switch
   *3	Lever	*4	ON-OFF
   *5	- SET	*6	+ RES
   *7	CANCEL	-	-

3. Install the cruise control main switch. Refer to INSTALLATION .

NG → See step   8 

OK: Go to next step 

1. Disconnect the connector from the spiral with sensor cable sub-assembly.
   Fig 3: Checking Harness & Connector (Cruise Control Main Switch - Spiral Cable Sub-Assembly)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the connector from the cruise control main switch.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   Cruise control main switch side connector terminal 3 - z10-3	Always	Below 1 Ω
   Cruise control main switch side connector terminal 1 - z10-4	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Spiral with Sensor Cable Sub-assembly)
   *2	Front view of wire harness connector (to Cruise Control Main Switch)

4. Reconnect the connector to the cruise control main switch.
5. Reconnect the connector to the spiral with sensor cable sub-assembly.

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

OK: Go to next step 

1. Remove the spiral with sensor cable sub-assembly. Refer to REMOVAL .
   Fig 4: Checking Spiral With Sensor Cable Sub-Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   z10-3 - L52-1 (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
   z10-4 - L52-2 (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
   
   

   *1	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.

3. Remove the spiral with sensor cable sub-assembly. Refer to REMOVAL .

NG → See step   9 

OK: Go to next step 

1. Disconnect the power management control ECU connector.
2. Disconnect the spiral with sensor cable sub-assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   L52-1 (CCS) - L6-22 (CCS)	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   L52-1 (CCS) or L6-22 (CCS) - Body ground	Always	10 kΩ or higher

4. Reconnect the spiral with sensor cable sub-assembly connector.
5. Reconnect the power management control ECU connector.

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

OK: Go to next step 

1. Disconnect the spiral with sensor cable sub-assembly connector.
   Fig 5: Identifying Wire Harness Connector To Spiral With Sensor Cable Sub-Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   L52-2 (ECC) - Body ground	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Spiral with Sensor Cable Sub-assembly)

3. 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 → See step   10