Inspection Procedure

NOTE: If the vehicle speed is outside the allowable range when tested, perform the following procedure (See ON-VEHICLE INSPECTION ).

PERFORM ACTIVE TEST BY INTELLIGENT TESTER

Operate the intelligent tester according to the steps on the display and select "ACTIVE TEST".

METER

ACTIVE TEST REFERENCE CHART

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 ON INTELLIGENT TESTER

Operate the intelligent tester according to the steps on the display and select "DATA LIST".

METER

DATA LIST REFERENCE CHART

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 ON INTELLIGENT TESTER

Operate the intelligent tester according to the steps on the display and select "DATA LIST".

ABS/VSC/TRAC

DATA LIST REFERENCE CHART

Item	Measurement Item/Range (Display)	Normal Condition	Diagnostic Note
(FL/FR/RL/RR) 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 measured using a speedometer tester (calibrated chassis dynamometer).

NG: REPLACE ABS AND TRACTION ACTUATOR ASSEMBLY

OK: Go to next step.

INSPECT COMBINATION METER ASSEMBLY

Disconnect the S38 connector.

Fig 1: Identifying ABS And Traction Actuator Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Standard Voltage

VOLTAGE CHART

Tester Connection	Condition	Specified Condition
S38-22 (SP1) - Body ground	Turn the ignition switch to the ON position	10 to 14 V

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 C12-18 (SPEED SIGNAL) and body ground.

Fig 2: Connecting Oscilloscope To Terminals C12-18 (SPEED SIGNAL) And Body Ground
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Start the engine.

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

WAVEFORM REFERENCE CHART

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

OK: The waveform is displayed as shown in the illustration.

HINT:

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

NG: REPLACE ABS AND TRACTION ACTUATOR ASSEMBLY

OK: REPLACE COMBINATION METER ASSEMBLY

CHECK HARNESS AND CONNECTOR (COMBINATION METER AND ABS & TRACTION ACTUATOR ASSEMBLY)

Disconnect the C12 and S38 connectors.

Fig 3: Identifying C12 And S38 Connectors
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Standard Resistance

RESISTANCE REFERENCE CHART

Tester Connection	Condition	Specified Condition
C12-18 (SPEED SIGNAL) - S38-22 (SP1)	Always	Below 1 Ω
C12-18 (SPEED SIGNAL) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: REPLACE COMBINATION METER ASSEMBLY