Inspection Procedure

HINT:

• The whole accessory meter assembly should be replaced if the passenger seat belt warning light has a malfunction because this part is not independently supplied.
• If any DTC for the clock communication system is output, there may be a malfunction in communication between the clock assembly and multi-display.
• The combination meter assembly controls illumination through the ILL+ terminal.
• If deviation in the clock exceeds the specification, replace the accessory meter assembly (See step 17 under REMOVAL ).

Standard: 

w/o Navigation system: +-1 second/day 

w/ Navigation system: -2 to 6 seconds/day 

1. INSPECT CLOCK ASSEMBLY 
   1. Remove the clock display.
      Fig 1: Identifying E4 (*1)/E5 (*2) Connector Terminals

      Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
   2. Disconnect the E4 (*1)/E5 (*2) connector.
   3. Measure the voltage according to the value(s) in the table below.

      Voltage 

      VOLTAGE REFERENCE
      
      

      Tester Connection	Condition	Specified Condition
      E4-1 (B(+)) (1) - Body ground	Always	10 to 14 V
      E4-2 (EARTH(-)) (1) - Body ground	Always	Below 1 V
      E4-4 (ACC(+)) (1) - Body ground	Ignition switch on (ACC)	10 to 14 V
      E5-4 (ACC(+)) (2) - Body ground	Ignition switch on (ACC)	10 to 14 V
      E5-7 (EARTH(-)) (2) - Body ground	Always	Below 1 V
      E5-8 (B(+)) (2) - Body ground	Always	10 to 14 V
      (1) w/o Navigation System (2) w/ Navigation System

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: GO TO NEXT STEP 

2. CHECK ILLUMINATION 
   ILLUMINATION CHECK REFERENCE
   
   

   w/o Navigation system	A
   w/ Navigation system	B

   B: GO TO NAVIGATION SYSTEM

   A: GO TO NEXT STEP 

3. CHECK HARNESS AND CONNECTOR (BODY ECU - CLOCK DISPLAY) 
   1. Disconnect the E4 and D6 connectors.
      Fig 2: Identifying E4 And D6 Connectors Terminals

      Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
   2. Measure the resistance according to the value(s) in the table below.

      Resistance 

      RESISTANCE REFERENCE
      
      

      Tester Connection	Condition	Specified Condition
      E4-3 (ILL+) - D6-16 (ACAN)	Always	Below 1 Ω
      D6-16 (ACAN) - Body ground	Always	10 kΩ or higher

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: GO TO NEXT STEP 

4. INSPECT CLOCK ASSEMBLY 
   1. Remove the clock display with the connectors still connected.
      Fig 3: Identifying Clock Display E4 Connector Terminals

      Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
   2. Disconnect the E4 connector.
   3. Measure the voltage according to the value(s) in the table below.

      Voltage 

      VOLTAGE REFERENCE
      
      

      Tester Connection	Condition	Specified Condition
      E4-3 (ILL+) - Body ground	Ignition switch on (ACC) and TAIL on	10 to 14 V

   NG: REPLACE ACCESSORY METER ASSEMBLY 

   OK: REPLACE BODY ECU