Inspection Procedure

1. Disconnect the E3 (*1)/E18 (*2) connector.
2. Measure the voltage according to the value(s) in the table below.

   Standard voltage 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   E3-1 (B) ((1)) - Body ground	Always	10 to 14 V
   E18-1 (B) ((2)) - Body ground	Always	10 to 14 V
   E3-10 (ACC) ((1))-Body ground	Engine switch on (ACC)	10 to 14 V
   E18-2 (ACC) ((2))- Body ground	Engine switch on (ACC)	10 to 14 V
   (1) without Navigation System (2) with Navigation System

3. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   E3-18 (GND) ((1)) - Body ground	Always	Below 1 Ω
   E18-8 (E) ((2)) - Body ground	Always	Below 1 Ω
   (1) without Navigation System (2) with Navigation System

   Fig 1: Identifying Clock Assembly Wire Harness Connector Terminal E3

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Result 

   RESULT CHART
   
   

   Result	Proceed to
   OK (without Navigation System)	A
   OK (with Navigation System)	B
   NG	C

   HINT:

   The whole heater control panel (*1)/multi-display should be replaced if the clock assembly has a malfunction because this part is not independently supplied.

B: REPLACE MULTI-DISPLAY 

C: REPAIR OR REPLACE HARNESS OR CONNECTOR 

A: REPLACE HEATER CONTROL PANEL