Inspection Procedure

1. Disconnect the navigation receiver assembly connector R12.
2. Measure the voltage according to the value(s) in the table below.

   Standard voltage 

   TESTER CONNECTION AND SPECIFIED CONDITION
   
   

   Tester connection	Condition	Specified condition
   REV - Body ground	Ignition switch is ON. Shift lever is moved to R position.	10 to 14 V
   REV - Body ground	Ignition switch is ON. Shift lever is moved to any position except R.	Below 1 V

Fig 1: Identifying Navigation Receiver Assembly Connector R12
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: REPLACE NAVIGATION RECEIVER ASSEMBLY 

NG: Go to next step. 

1. Disconnect the navigation receiver assembly connector R12 and park/neutral position switch connector P1.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   TESTER CONNECTION AND SPECIFIED CONDITION
   
   

   Tester connection	Condition	Specified condition
   REV - P1-1	Always	Below 1 Ω
   REV - Body ground	Always	10 kΩ or higher

Fig 2: Checking Harness And Connector (Navigation Receiver Assembly - Park/Neutral Position Switch)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step. 

1. Disconnect the park/neutral position switch connector P1.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   TESTER CONNECTION AND SPECIFIED CONDITION
   
   

   Tester connection	Condition	Specified condition
   P1-1 - P1-2	Shift lever is moved to R	Below 1 Ω
   P1-1 - P1-2	Shift lever is moved to any position except R.	10 kΩ or higher

Fig 3: Identifying Park/Neutral Position Switch Connector P1 Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE PARK / NEUTRAL POSITION SWITCH 

OK: REPAIR OR REPLACE HARNESS OR CONNECTOR