Problem Symptoms Table

If a normal code is displayed during the DTC check but the problem still occurs, check the circuits for each problem symptom in the order given in the table.

NOTE:

• When replacing skid control ECU, sensor or etc., turn the ignition switch OFF.

• When replacing steering angle, master cylinder pressure, yaw rate, deceleration sensors or/ and the ECU, make sure to perform steering angle, master cylinder pressure, yaw rate, deceleration sensors zero point calibration (See PRE-CHECK ).

2001 BRAKES ABS With EBD & Trac & VSC System - Diagnostics - Sequoia

Symptom

Suspect Area

ADS does not operate

When the followings 1 to 4 are all normal and Ihe problem is still occurring, replace trie skid control ECU.

1. Check the DTC reconfirming that the normal code Is output

2. IG power source ciicuit

3. Speed sensor circuit

4. Check the hydraulic circuit for leakage

ABS does not operate efficiently

When the following 1. to 4. are all normal and tho problem is still occurring, replace the skid control ECU.

1. Check the DTC reconfirming that the normal code Is output.

2. Speed sonsor circuit

3. Stop light switch circuit

4. Check the hydraulic circuit for leakage.

ABS warning light abnormal

1. ABS warning light circuit

2. Skid control ECU

BRAKE warning lighl ahnormal

1. BRAKE warning light circuit

2. Skid control ECU

3. Translate ECU

DTC check cannot bo done

When the following 1. and 2. are all normal and the problem is slill occurring, replace the skid control ECU.

1. ABS warning light circuit

2. Tc terminal circuit

3. VSC TRAC warning light circuit

Speed sensor signal check cannot be done

1. Ts terminal circuit

2. Skid control ECU

TRAC does not operate

Only when 1. to 4. are all normal and the problem is still occurring, replace the skid control ECU.

1. Check the DTC. reconfirming thai the normal code is output

2. IG power source circuit

3. Check the hydraulic circuit for leakage

4. Speed sensor circuit

VSC does not operate

Only when 1. to 8. are all normal and the problem is still occurring, replace the skid control ECU.

1. Check the DTC, reconfirming that Ihe normal code is output.

2. IG power source circuit

3. Check the hydraulic circuit for leakage

4. Speed sensor circuit

5. Deceleration sensor circuit

6. Yaw rate sensor circuit

7. Steering angle sensor circuit

8. Master cylinder pressure sensor circuit

G028101 ei'

G028101 ei'

Fig. 27: Problem Symptom Table (1 Of 2)

2001 BRAKES ABS With EBD & Trac & VSC System - Diagnostics - Sequoia

VSC TRAC warring light abnormal

1. VSC TRAC warning light circuit

2. Skid control k:u

SLIP indicator light abnormal

1. SUP indicator light circuit

2. Skid control ECU

VSC orF (TRAC OFF) indicator abnormal

1. VSC OFF (TRAC OFF) indicator light circuit

2. VSC OFF (TRAC orr) switch circuit

3. Skid control ECU

G02810183

G02810183

Fig. 28: Problem Symptom Table (2 Of 2)

DTC IDENTIFICATION CHART

DTC

Description

DTC C0200 / 31

SPEED SENSOR CIRCUIT

DTC C0201 / 31

SPEED SENSOR CIRCUIT

DTC C0202 / 31

SPEED SENSOR CIRCUIT

DTC C0203 / 31

SPEED SENSOR CIRCUIT

DTC C0204 / 31

SPEED SENSOR CIRCUIT

DTC C0205 / 31

SPEED SENSOR CIRCUIT

DTC C0206 / 31

SPEED SENSOR CIRCUIT

DTC C0207 / 31

SPEED SENSOR CIRCUIT

DTC C0208 / 31

SPEED SENSOR CIRCUIT

DTC C0209 / 31

SPEED SENSOR CIRCUIT

DTC C0210 / 31

SPEED SENSOR CIRCUIT

DTC C0211 / 31

SPEED SENSOR CIRCUIT

DTC C0212 / 31

SPEED SENSOR CIRCUIT

DTC C0213 / 31

SPEED SENSOR CIRCUIT

DTC C0214 / 31

SPEED SENSOR CIRCUIT

DTC C0215 / 31

SPEED SENSOR CIRCUIT

DTC C0226 / 21

ABS & VSC SOLENOID CIRCUIT

DTC C0278 / 11

ABS & VSC RELAY CIRCUIT

DTC C1203 / 53

ECM COMMUNICATION CIRCUIT MALFUNCTION

DTC C1223 / 43

ABS Control System Malfunction

DTC C1231 / 31

Steering Angle Sensor Circuit

DTC C1232 / 32

DECELERATION SENSOR CIRCUIT

DTC C1234 / 34

YAW RATE SENSOR CIRCUIT

DTC C1241 / 41

IG POWER SOURCE CIRCUIT

DTC C1249 / 49

STOP LIGHT SWITCH CIRCUIT

DTC C1251 / 51

ABS & VSC PUMP MOTOR LOCK

DTC C1310 / 11

ACTIVE BRAKE BOOSTER SOLENOID

CIRCUIT

2001 BRAKES ABS With EBD & Trac & VSC System - Diagnostics - Sequoia

DTC C1311/12

BRAKE INHIBIT RELAY CIRCUIT

DTC C1337 / 37

SOME TIRE IS DIFFERENT SIZE FROM THE

OTHER TIRES

DTC C1340 / 48

CENTER DIFF. LOCK CIRCUIT

DTC C1360 / 61

MASTER CYLINDER PRESSURE SENSOR

CIRCUIT

DTC C1361 / 62

ABNORMALLY BATTERY VOLTAGE OF VSC

SENSOR

DTC C1362 / 36

MALFUNCTION IN SENSOR SET VALUE (VSC

SENSOR SYSTEM)

DTC C1363 / 63

BOOSTER PEDAL FORCE SWITCH CIRCUIT

DTC 42

ECU COMMUNICATION SYSTEM MALFUNCTION

DTC 44

NEO SIGNAL

DTC 53

ECM COMMUNICATION CIRCUIT MALFUNCTION

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

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