Main Switch Circuit [12/2017 - 10/2022]: 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: Body Electrical / Head Up Display / Data List.
5. Read the Data List according to the display on the Techstream.

   Body Electrical > Head Up Display > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Main Switch	Integration control and panel assembly (headup display switch) status	OFF or ON	OFF: Switch released ON: Switch pushed	-

   Body Electrical > Head Up Display > Data List 

   Tester Display
   Main Switch

   OK

   Integration control and panel assembly (headup display switch) condition displayed on the Techstream changes with the actual switch operation.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE METER MIRROR SUB-ASSEMBLY. Refer to  REMOVAL [12/2017 - 09/2018]  , or refer to  REMOVAL [09/2018 - 10/2020]  , or refer to  REMOVAL [10/2020 - 10/2022] 

Result: 

NG 

See step  2

1. Remove the integration control and panel assembly (headup display switch).

   Refer to REMOVAL [12/2017 - ]

2. Inspect the integration control and panel assembly (headup display switch).

   Refer to INSPECTION [12/2017 - 10/2022]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE INTEGRATION CONTROL AND PANEL ASSEMBLY. Refer to  REMOVAL [12/2017 - ] 

Result: 

OK 

See step  3

1. Disconnect the G88 meter mirror sub-assembly connector.
2. Disconnect the G6 integration control and panel assembly (headup display switch) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G88-9 (SW1) - G6-4 (ILU)	Always	Below 1 Ω
   G88-16 (E) - G6-16 (CH)	Always	Below 1 Ω
   G88-9 (SW1) or G6-4 (ILU) - Body ground	Always	10 kΩ or higher
   G88-16 (E) or G6-16 (CH) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE METER MIRROR SUB-ASSEMBLY. Refer to  REMOVAL [12/2017 - 09/2018]  , or refer to  REMOVAL [09/2018 - 10/2020]  , or refer to  REMOVAL [10/2020 - 10/2022] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR