Door Courtesy Switch Circuit [08/2015 - ]: Procedure

1. Using the Techstream, read the Data List (Refer to DATA LIST / ACTIVE TEST [08/2015 - 08/2019] , or refer to DATA LIST / ACTIVE TEST [08/2019 - 08/2022] , or refer to DATA LIST / ACTIVE TEST [08/2022 - ] ).
   MAIN BODY
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   RR Door Courtesy SW	Rear door courtesy light switch RH signal / ON or OFF	ON: Rear door RH open OFF: Rear door RH closed	-
   RL Door Courtesy SW	Rear door courtesy light switch LH signal / ON or OFF	ON: Rear door LH open OFF: Rear door LH closed	-
   FR Door Courtesy SW	Front door courtesy light switch RH signal / ON or OFF	ON: Front door RH closed OFF: Front door RH open	-
   FL Door Courtesy SW	Front door courtesy light switch LH signal / ON or OFF	ON: Front door LH closed OFF: Front door LH open	-

   OK

   Normal conditions listed above are displayed.

Result: 

NG 

LIGHTING SYSTEM 

(Refer to Door Courtesy Switch Circuit [08/2015 - 08/2019] , or refer to Door Courtesy Switch Circuit [08/2019 - ] )

Result: 

OK 

See step  2

1. for LH
   1. Disconnect the O5 and O6 door courtesy light switch connectors.
   2. Disconnect the O26 diode connector.
2. for RH
   1. Disconnect the N5 and N7 door courtesy light switch connectors.
   2. Disconnect the N24 diode connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   for LH 

   Tester Connection	Condition	Specified Condition
   O5-1 - O26-1	Always	Below 1 Ω
   O6-1 - O26-3	Always	Below 1 Ω

   for RH 

   Tester Connection	Condition	Specified Condition
   N5-1 - N24-1	Always	Below 1 Ω
   N7-1 - N24-3	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   for LH 

   Tester Connection	Condition	Specified Condition
   O5-1 - Body ground	Always	10 kΩ or higher
   O6-1 - Body ground	Always	10 kΩ or higher

   for RH 

   Tester Connection	Condition	Specified Condition
   N5-1 - Body ground	Always	10 kΩ or higher
   N7-1 - Body ground	Always	10 kΩ or higher

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

1. Disconnect the F90 side auto step switch assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   for LH 

   Tester Connection	Condition	Specified Condition
   O26-2 - F90-3 (CTY1)	Always	Below 1 Ω

   for RH 

   Tester Connection	Condition	Specified Condition
   N24-2 - F90-5 (CTY2)	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   for LH 

   Tester Connection	Condition	Specified Condition
   O26-2 - Body ground	Always	10 kΩ or higher

   for RH 

   Tester Connection	Condition	Specified Condition
   N24-2 - Body ground	Always	10 kΩ or higher

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

1. Replace the diode on the malfunctioning side with a new or correctly functioning diode.

Result: 

NEXT 

See step  5

1. Check that the automatic running board functions normally (Refer to OPERATION CHECK [08/2015 - ] ).

   OK

   Malfunction disappears.

Result: 

OK 

END 

Result: 

NG 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

(Refer to PROBLEM SYMPTOMS TABLE [08/2015 - ] )