Inspection Procedure

HINT:

Start the inspection from step 1 when using the intelligent tester and start from step 4 when not using the intelligent tester.

PERFORM ACTIVE TEST BY INTELLIGENT TESTER

Connect the intelligent tester to the DLC3.
Turn the ignition switch to the ON position.
Turn the tester ON.
Enter the following menus: DIAGNOSIS / OBD/MOBD / METER/ACTIVE TEST.

Check the values by referring to the table below.

METER:

METER SPECIFICATION

Item	Test Details	Diagnostic Note
SPEED METER	0, 40 (24), 80 (48), 120 (72), 160 (96), 200 (120) km/h (mph)	-

OK: Needle indication is within the allowable range.

NG: REPLACE COMBINATION METER ASSEMBLY

OK: Go to Next Step

READ VALUE OF INTELLIGENT TESTER

Connect the intelligent tester to the DLC3.
Turn the ignition switch to the ON position.
Turn the tester ON.
Enter the following menus: DIAGNOSIS / OBD/MOBD / METER / DATA LIST.

Check the values by referring to the table below.

METER:

METER SPECIFICATION

Item	Measurement Item/Range (Display)	Normal Condition	Diagnostic Note
SPEED METER	Vehicle speed/Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph)	Almost same as actual speed (When driving)	-

OK: Vehicle speed displayed on the tester is almost the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer).

NG: Go to step 3

OK: REPLACE COMBINATION METER ASSEMBLY

READ VALUE OF INTELLIGENT TESTER

Connect the intelligent tester to the DLC3.
Turn the ignition switch to the ON position.
Turn the tester ON.
Enter the following menus: DIAGNOSIS / OBD/MOBD / ABS/TRAC/VSC / DATA LIST.

Check the values by referring to the table below.

ABS/TRAC/VSC:

ABS/TRAC/VSC REFERENCE

Item	Measurement Item/Range (Display)	Normal Condition	Diagnostic Note
(FL/FR/RL/RR) WHEEL SPD	Vehicle speed/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)	Almost same as actual speed (When driving)	-

OK: Vehicle speed displayed on the tester is almost the same as the actual vehicle speed.

NG: GO TO BRAKE CONTROL

OK: Go to Next Step

INSPECT COMBINATION METER ASSEMBLY

Disconnect the S1 connector.

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

Standard voltage

VOLTAGE SPECIFICATION

Tester Connection	Condition	Specified Condition
S1-12 (SP1) - Body ground	Turn the ignition switch to the ON position.	10 to 14 V

Fig 1: Identifying S1 Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Go to step 6

OK: Go to Next Step

INSPECT COMBINATION METER ASSEMBLY

Check the input signal waveform.

Remove the combination meter assembly with connector (s) still connected.
Connect the oscilloscope to terminal C9-18 (SPEED SIGNAL) and body ground.
Start the engine.

Check the signal waveform according to the condition (s) in the table below.

WAVEFORM REFERENCE

Item	Condition
Tool setting	5 V/DIV., 20 ms/DIV.
Vehicle condition	Driving at approx. 20 km/h (12 mph)

Fig 2: Input Signal Waveform

OK: The waveform is displayed as shown in Fig 2 .

HINT:

As the vehicle speed increases, the cycle of the signal waveform narrows.

NG: REPLACE SKID CONTROL ECU

OK: REPLACE COMBINATION METER ASSEMBLY

CHECK HARNESS AND CONNECTOR (COMBINATION METER - SKID CONTROL ECU)

Disconnect the C9 and S1 connectors.

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

Standard resistance

RESISTANCE REFERENCE CHART

Tester Connection	Condition	Specified Condition
C9-18 (SPEED SIGNAL) -S1-12 (SP1)	Always	Below 1 Ω
C9-18 (SPEED SIGNAL) - Body ground	Always	10 kΩ or higher

Fig 3: Identifying C9 And S1 Connectors Terminals

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: REPLACE COMBINATION METER ASSEMBLY