Inspection Procedure

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.

CHECK BATTERY VOLTAGE
1. Measure the voltage of the battery.
  Standard voltage:
  
  11 to 14 V
NG: INSPECT CHARGING SYSTEM AND BATTERY (See ON-VEHICLE INSPECTION )

OK: Go to next step
CHECK CONNECTOR
1. Turn the engine switch off
2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
3. Check that the connector is properly connected to the combination meter assembly
  OK: The connector is properly connected.
  
  HINT.
  
  If the connector is not connected securely, reconnect the connector and proceed to the next inspection
4. Disconnect the connector from the combination meter assembly.
5. Check that the terminal of the connector is not damaged
  OK: The terminal is not deformed or damaged.
NG: REPLACE WIRE HARNESS

OK: Go to next step

CHECK WIRE HARNESS (COMBINATION METER ASSEMBLY - BODY GROUND)

Connect the cable to the negative (-) battery terminal
Turn the engine switch on (IG)

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

Standard Voltage

TESTER CONNECTION SPECIFIED CONDITION CHART

Taster Connection	Condition	Specified Condition
J34-24 (B) - Body ground	Always	11 to 14 V
J34-12 (IG+) - Body ground	Engine switch on (IG)	11 to 14 V

Turn the engine switch off

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

Fig 1: Identifying Wire Harness (Combination Meter Assembly - Body Ground)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard Resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
J34-13 (ES) - Body ground	Always	Below 1 Ω

NG: REPLACE WIRE HARNESS

OK: Go to next step

CHECK SRS WARNING LIGHT
1. Connect the connector to the combination meter assembly
2. Disconnect the connector from the center airbag sensor assembly
3. Connect the cable to the negative (-) battery terminal.
4. Turn the engine switch on (IG).
5. Check the SRS warning light condition
  OK: After the primary check period, SRS warning light goes off for approximately 10 seconds and remains on.
  
  HINT.
  
  The primary check period is approximately 6 seconds after the engine switch is turned on (IG).
NG: REPLACE COMBINATION METER ASSEMBLY (See REMOVAL )

OK: REPLACE CENTER AIRBAG SENSOR ASSEMBLY (See REMOVAL )