Power Source Circuit [09/2022 - 11/2022]: Procedure

1. Disconnect the I4 combination meter assembly connector.
2. Measure the voltage according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Combination Meter Assembly)
   *1	for TMC Made
   *2	for TMMC Made

   Standard Voltage (for TMC Made)

   Tester Connection	Condition	Specified Condition
   I4-5 (B) - Body ground	Ignition switch off	11 to 14 V
   I4-6 (IG+) - Body ground	Ignition switch off	Below 1 V
   I4-6 (IG+) - Body ground	Ignition switch ON	11 to 14 V

   Standard Voltage (for TMMMS Made)

   Tester Connection	Condition	Specified Condition
   I4-22 (B) - Body ground	Ignition switch off	11 to 14 V
   I4-38 (IG+) - Body ground	Ignition switch off	Below 1 V
   I4-38 (IG+) - Body ground	Ignition switch ON	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  2

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

   Standard Resistance (for TMC Made)

   Tester Connection	Condition	Specified Condition
   I4-1 (EP) - Body ground	Always	Below 1 Ω
   I4-2 (ES) - Body ground	Always	Below 1 Ω

   Standard Resistance (for TMMMS Made)

   Tester Connection	Condition	Specified Condition
   I4-19 (EP) - Body ground	Always	Below 1 Ω
   I4-23 (ES) - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE COMBINATION METER ASSEMBLY 

Refer to REMOVAL [09/2022 - 11/2022]

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR