Main Switch Circuit [09/2015 - ]: Procedure

1. Using the Techstream, read the Data List.
   HEADUP DISPLAY
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Main Switch	Headup display main switch state / ON or OFF	ON: Switch pressed OFF: Switch released	-

   OK

   On the Techstream screen, ON or OFF is displayed accordingly.

Result: 

OK 

REPLACE METER MIRROR SUB-ASSEMBLY 

Refer to REMOVAL [09/2015 - ] )

Result: 

NG 

See step  2

1. Remove the combination switch assembly (headup display switch). Refer to REMOVAL [09/2015 - ] ).
2. Inspect the combination switch assembly (headup display switch). Refer to INSPECTION [09/2015 - ] ).

Result: 

NG 

REPLACE COMBINATION SWITCH ASSEMBLY 

Refer to REMOVAL [09/2015 - ] )

Result: 

OK 

See step  3

1. Disconnect the E147 meter mirror assembly connector.
2. Disconnect the E125 combination switch assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   E147-9 (SW1) - E125-5 (ILU)	Always	Below 1 Ω
   E147-16 (E) - E125-15 (CH)	Always	Below 1 Ω
   E147-9 (SW1) or E125-5 (ILU) - Body ground	Always	10 kΩ or higher
   E147-16 (E) or E125-15 (CH) - Body ground	Always	10 kΩ or higher

Result: 

OK 

REPLACE METER MIRROR SUB-ASSEMBLY 

Refer to REMOVAL [09/2015 - ] )

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR