Reverse Signal Circuit: Procedure

1. Disconnect the navigation receiver assembly connector.
   Fig 1: Identifying E32 Navigation Receiver Assembly Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   E52-5 (REV) - Body ground	Ignition switch ON Shift lever is in R	11 to 14 V
   E52-5 (REV) - Body ground	Ignition switch ON Shift lever is in any position except R	Below 1 V

NG → See step   2 

OK → See step   6 

1. Disconnect the navigation receiver assembly connector.
   Fig 2: Identifying E52 Navigation Receiver B35 Back-Up Light Switch And B13 PNP Switch Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the back-up light switch*1 or the park/neutral position switch*2.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   for Manual Transmission/Transaxle*1 

   for Automatic Transmission/Transaxle*2 

   Tester Connection	Condition	Specified Condition
   E52-5 (REV) - B30-1*3	Always	Below 1 Ω
   E52-5 (REV) - B35-1*4	Always	Below 1 Ω
   E52-5 (REV) - Body ground	Always	10 kΩ or higher

   Tester Connection	Condition	Specified Condition
   E52-5 (REV) - B13-1 (RL)	Always	Below 1 Ω
   E52-5 (REV) - Body ground	Always	10 kΩ or higher

   HINT: 

   • *1: for Manual Transmission/Transaxle
   • *2: for Automatic Transmission/Transaxle
   • *3: for 2AZ-FE
   • *4: for 2ZR-FE

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

Result

B → See step   5 

A: Go to next step 

1. Measure the voltage according to the value(s) in the table below.
   Fig 3: Identifying Back-Up Light Switch Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   B30-2 - Body ground*3	Ignition switch ON	11 to 14 V
   B35-2 - Body ground*4	Ignition switch ON	11 to 14 V

   HINT: 

   • *3: for 2AZ-FE
   • *4: for 2ZR-FE

   Result

   Result	Proceed to
   NG	A
   OK (for C59 Manual Transmission/Transaxle)	B
   OK (for E351 Manual Transmission/Transaxle)	C

C → See step   8 

B → See step   7 

A → REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Measure the voltage according to the value(s) in the table below.
   Fig 4: Identifying B13 Park/Neutral Position Switch Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   B13-2 (RB) - Body ground	Ignition switch ON	11 to 14 V

   Result

   Result	Proceed to
   NG	A
   OK (for U250E Automatic Transmission/Transaxle)	B
   OK (for U341E Automatic Transmission/Transaxle)	C
   OK (for U140F Automatic Transmission/Transaxle)	D

D → See step   11 

C → See step   10 

B → See step   9 

A → REPAIR OR REPLACE HARNESS OR CONNECTOR