Test Mode Procedure

Total OBD & ECU Auto Diagnostics

Total OBD & ECU Auto Diagnostics

Get Instant Access

Intelligent Tester

Intelligent Tester

DIAGNOSTIC MENU ABS

3 : ACTIVE TEST

4 : SNAPSHOT

5 : AIR BLEEDING

■7 : SIGNAL CHECK^H

8 : TEST MODE

N

C129997

Blinking Pattern in TEST MODE

Blinking Pattern in TEST MODE

SPEED SENSOR SIGNAL CHECK (TEST MODE)

PROCEDURE (WHEN USING INTELLIGENT

TESTER:)

HINT:

• If the ignition switch is turned from on (IG) to off during test mode (SIGNAL CHECK), the DTCs of the sensor check function will be erased.

• During test mode (SIGNAL CHECK), the skid control ECU records DTCs, if the abnormal sensor signal is received.

(a) Procedures for test mode:

(1) Turn the ignition switch off.

(2) Move the shift lever to the P position.

(3) Connect the intelligent tester to the DLC3.

(4) Turn the ignition switch on (IG)

(5) Select "SIGNAL CHECK" on the intelligent tester screen. HINT:

Refer to the intelligent tester operator's manual for further details.

(6) Check that the ABS warning light comes on for several seconds and then blinks in test mode. HINT:

If the ABS warning light does not blink, inspect the ABS warning light circuit.

Trouble area

See procedure

ABS warning light circuit (Remains on)

BC-67

ABS warning light (Does not come on)

BC-71

(7) Start the engine. (b) Check the speed sensor signal. (1) Drive the vehicle straight forward.

Accelerate the vehicle to a speed of 34 mph (55 km/h) or more.

(2) Depress the brake pedal and check that the ABS warning light goes off.

HINT:

• The sensor check may not be completed if the vehicle has its wheel spun or its steering wheel turned during this check.

• The ABS warning light goes off when the sensor signal check has been completed and the brake pedal is depressed.

• The ABS warning light comes on immediately after a malfunction has been detected during the speed sensor signal check.

(3) Stop the vehicle.

(4) Read the DTCs by following the tester screen. HINT:

See the list of DTCs (See procedure "A"). SPEED SENSOR SIGNAL CHECK (TEST MODE) PROCEDURE (WHEN USING SST CHECK WIRE:)

HINT:

• If the ignition switch is turned from on (IG) to off during test mode, the DTCs of the sensor signal check function will be erased.

• During test mode (SIGNAL CHECK), the skid control ECU records DTCs, if the abnormal sensor is received.

(a) Procedures for test mode:

(1) Turn the ignition switch off.

(2) Move the shift lever to the P position.

(3) Using SST, connect terminals TS and CG of the DLC3.

SST 09843-18040

(4) Turn the ignition switch on (IG).

Blinking Pattern in TEST MODE

(5) Check that the ABS warning light comes on for several seconds and then blinks in test mode. HINT:

If the ABS warning light does not blink, inspect the ABS warning light circuit and TS terminal circuit.

Trouble area

See procedure

ABS warning light circuit (Remains on)

BC-67

ABS warning light circuit (Does not come on)

BC-71

TS and CG terminal circuit

BC-86

(6) Start the engine.

B124401E14

(b) Check the speed sensor signal:

(1) Drive the vehicle straight forward. Accelerate the vehicle to a speed of 34 mph (55 km/h) or more.

(2) Depress the brake pedal and check that the ABS warning light goes off.

HINT:

• The sensor check may not be completed if the vehicle has its wheels spun or its steering wheel turned during this check.

• The ABS warning light goes off when the sensor signal check has been completed and the brake pedal is depressed.

• The ABS warning light comes on immediately after a malfunction has been detected during the speed sensor signal check.

(3) Stop the vehicle.

(4) Using SST, connect terminals TC and CG of the DLC3.

SST 09843-18040

(5) Read the number of blinks of the ABS warning light.

Malfunction Code (Example Code 72, 76)

jifir

Repeat

BR03893E03

HINT:

• See the list of DTCs (See procedure "A").

• If every sensor is normal, a normal code will be output (Acycle of 0.25 second ON and 0.25 second OFF is repeated).

• If 2 or more malfunctions are indicated at the same time, the lowest numbered code will be displayed first.

(6) After performing the check, turn the ignition switch off, and remove the SST from the DLC3. SST 09843-18040

If the ignition switch is not turned to the ON position after the SST is removed from the DLC3, the previous TEST MODE will continue.

3. DTC OF SIGNAL CHECK FUNCTION (test mode) (Procedure "A"):

Code No.

Diagnosis

Trouble Area

C1271/71

Low output voltage of right front speed sensor

• Front speed sensor RH

• Front speed sensor circuit RH

• Sensor installation

• Brake actuator assembly (skid control ECU)

C1272/72

Low output voltage of left front speed sensor

• Front speed sensor LH

• Front speed sensor circuit LH

• Sensor installation

• Brake actuator assembly (skid control ECU)

C1273/73

Low output voltage of right rear speed sensor

• Rear speed sensor RH

• Rear speed sensor circuit RH

• Sensor installation

• Brake actuator assembly (skid control ECU)

C1274/74

Low output voltage of left rear speed sensor

• Rear speed sensor LH

• Rear speed sensor circuit LH

• Sensor installation

• Brake actuator assembly (skid control ECU)

C1275/75

Abnormal change in output voltage of right front speed sensor

• Front speed sensor RH

• Front speed sensor circuit RH

• Sensor installation

• Brake actuator assembly (skid control ECU)

C1276/76

Abnormal change in output voltage of left front speed sensor

• Front speed sensor RH

• Front speed sensor circuit RH

• Sensor installation

• Brake actuator assembly (skid control ECU)

C1277/77

Abnormal change in output voltage of right rear speed sensor

• Front speed sensor LH

• Front speed sensor circuit LH

• Sensor installation

• Brake actuator assembly (skid control ECU)

C1278/78

Abnormal change in output voltage of left rear speed sensor

• Front speed sensor LH

• Front speed sensor circuit LH

• Sensor installation

• Brake actuator assembly (skid control ECU)

HINT:

The codes in this table are output only in signal check function (test mode).

Was this article helpful?

0 0
Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

Don't pay hundreds of dollars to find out what is wrong with your car. This book is dedicated to helping the do it yourself home and independent technician understand and use OBD-II technology to diagnose and repair their own vehicles.

Get My Free Ebook


Post a comment