Cruise Control Switch Circuit [12/2013 - 11/2016]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Radar Cruise / Data List.
5. Check the Data List for proper functioning of the cruise control main switch.

   Powertrain > Radar Cruise 

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

   Powertrain > Radar Cruise > Data List 

   Tester Display
   Main SW M-CPU
   Cancel Switch
   SET/COAST Switch
   RES/ACC Switch

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	ON-OFF
   *b	CANCEL
   *c	-SET
   *d	+RES
   *e	MODE

   OK

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

   Result

   Proceed to
   OK
   NG

6. Turn the engine switch off.

Result:  1

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [12/2013 - 11/2016] 

Result:  2

NG 

See step  2

1. Remove the cruise control main switch.

   Refer to REMOVAL [12/2013 - ]

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *1	Cruise Control Main Switch (ON-OFF button)	-	-
   *a	Component without harness connected (cruise control main switch)	*b	ON-OFF
   *c	+/RES	*d	-/SET
   *e	MODE	*f	CANCEL

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1 (ECC) - 3 (R/N)	Cruise control main switch (ON-OFF button) not pressed	1 MΩ or higher
   	MODE	Below 1.5 Ω
   1 (ECC) - 4 (CCS)	Cruise control main switch (ON-OFF button) not pressed	1 MΩ or higher
   	Cruise control main switch (ON-OFF button) pressed	Below 1.5 Ω
   	+/RES	235 to 245 Ω
   	-/SET	617 to 643 Ω
   	CANCEL	1509 to 1571 Ω

3. Reinstall the cruise control main switch.

   Refer to INSTALLATION [12/2013 - ]

   Result

   Proceed to
   OK
   NG

Result:  2

NG 

REPLACE CRUISE CONTROL MAIN SWITCH. Refer to  COMPONENTS [12/2013 - ] 

Result:  1

OK 

See step  3

1. Remove the cruise control switch wire.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *1	Cruise Control Switch Wire
   *a	Front view of wire harness connector (to Spiral Cable Sub-assembly)
   *b	Front view of wire harness connector (to Cruise Control Main Switch)

   Refer to REMOVAL [12/2013 - 11/2016]

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

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   z8-4 - Cruise control main switch side connector terminal 1	Always	Below 1 Ω
   z8-1 - Cruise control main switch side connector terminal 3	Always	Below 1 Ω
   z8-3 - Cruise control main switch side connector terminal 4	Always	Below 1 Ω

3. Reinstall the cruise control switch wire.

   Refer to INSTALLATION [12/2013 - 11/2016]

   Result

   Proceed to
   OK
   NG

Result:  2

NG 

REPAIR OR REPLACE CRUISE CONTROL SWITCH WIRE. Refer to  COMPONENTS [12/2013 - 11/2016] 

Result:  1

OK 

See step  4

1. Inspect the spiral cable sub-assembly.

   Refer to INSPECTION [12/2013 - 11/2016]

   Result

   Proceed to
   OK
   NG

Result:  2

NG 

REPLACE SPIRAL CABLE SUB-ASSEMBLY. Refer to  COMPONENTS [12/2013 - ] 

Result:  1

OK 

See step  5

1. Disconnect the A43 ECM connector.
2. Disconnect the F61 spiral 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
   A43-47 (CCS) - F61-1 (CCS)	Always	3 Ω or less
   A43-48 (CCHG) - F61-8 (R/N)	Always	3 Ω or less

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   A43-47 (CCS) or F61-1 (CCS) - Body ground	Always	1 MΩ or higher
   A43-48 (CCHG) or F61-8 (R/N) - Body ground	Always	1 MΩ or higher

4. Reconnect the A43 ECM connector.
5. Reconnect the F61 spiral cable sub-assembly connector.

   Result

   Proceed to
   OK
   NG

Result:  2

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - ECM) 

Result:  1

OK 

See step  6

1. Disconnect the F61 spiral cable sub-assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   F61-2 (ECC) - Body ground	Always	Below 1 Ω

3. Reconnect the F61 spiral cable sub-assembly connector.

   Result

   Proceed to
   OK
   NG

Result:  1

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [12/2013 - 11/2016] 

Result:  2

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - BODY GROUND)