Page 2255 of 2890
B4M0407A
3. CHECK RESISTANCE OF ABS SENSOR.
1) Turn ignition switch OFF.
2) Disconnect connector from ABS sensor.
3) Measure resistance between ABS sensor connector ter-
minals.
TROUBLE CODE / Connector & terminal:
22 / (B6) No. 1—No. 2
24 / (B15) No. 1—No. 2
26 / (P8) No. 1—No. 2
28 / (P9) No. 1—No. 2
Specified resistance: 0.8—1.2 kΩ
4. CHECK HARNESS CONNECTOR BETWEEN ABS/
TCS CONTROL MODULE AND ABS SENSOR.
Check for poor contacts in plug-in connectors. Refer to
“Basic checks”in“FOREWORD”.
44
4-4bBRAKES
8. Diagnostics Chart with Trouble Code
Page 2256 of 2890
5. CHECK SOURCES OF SIGNAL NOISE.
1) Check that the mobile phone, personal radio and other
wireless apparatus are correctly installed.
2) Check that the antenna and other possible noise
sources are distant enough from the sensor harness.
3) Check that the sealed wires of the front harness sensor
(in the engine room) are securely grounded.
4) Check that between ABS/TCS control module and the
rear sensor harness has the correct twist pitch.
Twist pitch:
25 mm (0.98 in) or less
6. CHECK HYDRAULIC UNIT OPERATIONS.
1) Operate the ABS sequence control and check that the
brake fluid pressure at the malfunctioning brake line
increases and decreases properly.
45
4-4bBRAKES
8. Diagnostics Chart with Trouble Code
Page 2257 of 2890
D: TROUBLE CODE 31, 33, 35, 37, 61 AND 62
—FAULTY INLET SOLENOID VALVE
CIRCUIT(S) AND TCS SOLENOID VALVE
CIRCUIT(S) IN HYDRAULIC UNIT—
DIAGNOSIS:
Faulty harness/connector
Faulty solenoid valve in hydraulic unit
Faulty ABS/TCS control module
TROUBLE SYMPTOM:
ABS does not operate.
TCS does not operate.
ABS sequence control does not operate.
TCS sequence control does not operate.
Air bleeding mode does not operate.
1. Check resistance of solenoid valve.
OK
Not OK
Replace hydraulic unit.
2. Check body short of solenoid valve.
OK
Not OK
Replace hydraulic unit.
3. Check body short of harness.
OK
Not OK
Repair harness.
4. Check harness between ABS/TCS control
module and hydraulic unit.
OK
Not OK
Repair harness/connector.
Replace ABS/TCS control module.
46
4-4bBRAKES
8. Diagnostics Chart with Trouble Code
Page 2258 of 2890
B4M0739
B4M0722A
1. CHECK RESISTANCE OF SOLENOID VALVE.
1) Turn ignition switch OFF.
2) Disconnect connector from hydraulic unit.
3) Measure resistance between hydraulic unit terminals.
TROUBLE CODE / Connector & terminal:
31 / (F15) No. 3—No. 9
33 / (F15) No. 4—No. 10
35 / (F15) No. 1—No. 10
37 / (F15) No. 2—No. 9
61 / (F15) No. 12—No. 9
62 / (F15) No. 11—No. 10
Specified resistance: approx. 6±1Ω
47
4-4bBRAKES
8. Diagnostics Chart with Trouble Code
Page 2259 of 2890
B4M0723A
2. CHECK BODY SHORT OF SOLENOID VALVE.
1) Turn ignition switch OFF.
2) Disconnect connector from hydraulic unit.
3) Measure resistance between hydraulic unit terminals.
TROUBLE CODE / Connector & terminal:
31 / (F15) No. 3—body
33 / (F15) No. 4—body
35 / (F15) No. 1—body
37 / (F15) No. 2—body
61 / (F15) No. 12—body
62 / (F15) No. 11—body
Specified resistance: 1 MΩor more
B4M0419A
3. CHECK BODY SHORT OF HARNESS.
1) Turn ignition switch OFF.
2) Disconnect connector from hydraulic unit.
3) Disconnect connector from ABS/TCS control module.
4) Measure resistance between ABS/TCS control module
connector terminals.
TROUBLE CODE / Connector & terminal:
31 / (P5) No. 2—body
33 / (P4) No. 2—body
35 / (P4) No. 4—body
37 / (P5) No. 7—body
61 / (P4) No. 5—body
62 / (P5) No. 6—body
Specified resistance: 1 MΩor more
B4M0420A
4. CHECK HARNESS BETWEEN ABS/TCS CONTROL
MODULE AND HYDRAULIC UNIT.
1) Turn ignition switch OFF.
2) Connect connector to hydraulic unit.
3) Disconnect connector from ABS/TCS control module.
4) Measure resistance between ABS/TCS control module
connector terminals.
TROUBLE CODE / Connector & terminal:
31 / (P5) No. 2—(P6) No. 6
33 / (P4) No. 2—(P6) No. 6
48
4-4bBRAKES
8. Diagnostics Chart with Trouble Code
Page 2260 of 2890
35 / (P4) No. 4—(P6) No. 6
37 / (P5) No. 7—(P6) No. 6
61 / (P4) No. 5—(P6) No. 6
62 / (P5) No. 6—(P6) No. 6
Specified resistance: 6.2±1.0Ω
49
4-4bBRAKES
8. Diagnostics Chart with Trouble Code
Page 2261 of 2890
E: TROUBLE CODE 32, 34, 36 AND 38
—FAULTY OUTLET SOLENOID VALVE
CIRCUIT(S) IN HYDRAULIC UNIT—
DIAGNOSIS:
Faulty harness/connector
Faulty solenoid valve in hydraulic unit
Faulty ABS/TCS control module
TROUBLE SYMPTOM:
ABS does not operate.
TCS does not operate.
ABS sequence control does not operate.
TCS sequence control does not operate.
Air bleeding mode does not operate.
1. Check resistance of solenoid valve.
OK
Not OK
Replace hydraulic unit.
2. Check body short of solenoid valve.
OK
Not OK
Replace hydraulic unit.
3. Check body short of harness.
OK
Not OK
Repair harness.
4. Check harness between ABS/TCS control
module and hydraulic unit.
OK
Not OK
Repair harness/connector.
Replace ABS/TCS control module.
50
4-4bBRAKES
8. Diagnostics Chart with Trouble Code
Page 2262 of 2890
B4M0724
B4M0725A
1. CHECK RESISTANCE OF SOLENOID VALVE.
1) Turn ignition switch OFF.
2) Disconnect connector from hydraulic unit.
3) Measure resistance between hydraulic unit terminals.
TROUBLE CODE / Connector & terminal:
32 / (F15) No. 7—No. 9
34 / (F15) No. 8—No. 10
36 / (F15) No. 5—No. 10
38 / (F15) No. 6—No. 9
Specified resistance: 3.5±1.0Ω
B4M0726A
2. CHECK BODY SHORT OF SOLENOID VALVE.
1) Turn ignition switch OFF.
2) Disconnect connector from hydraulic unit.
3) Measure resistance between hydraulic unit terminals.
TROUBLE CODE / Connector & terminal:
32 / (F15) No. 7—body
34 / (F15) No. 8—body
36 / (F15) No. 5—body
38 / (F15) No. 6—body
Specified resistance: 1 MΩor more
51
4-4bBRAKES
8. Diagnostics Chart with Trouble Code
