Page 1745 of 2248
B4M0443
3. CHECK SHORT CIRCUIT OF VALVE RELAY.
1) Turn ignition switch OFF.
2) Remove valve relay.
3) Measure resistance between valve relay terminals.
Terminal / Specified resistance:
No. B—F/1MΩor more
B4M0444A
4. CHECK INPUT VOLTAGE OF VALVE RELAY.
1) Turn ignition switch OFF.
2) Disconnect valve relay.
3) Measure voltage between valve relay connector and
body.
Connector & terminal / Specified voltage:
(F11) No. 1—body/0V
(F11) No. 3—body / 10—13 V
4) Turn ignition switch ON.
5) Measure voltage between valve relay connector and
body.
Connector & terminal / Specified voltage:
(F11) No. 1—body / 10—13 V
(F11) No. 3—body / 10—13 V
B4M0445A
5. CHECK GROUND CIRCUIT OF VALVE RELAY.
1) Turn ignition switch OFF.
2) Disconnect valve relay.
3) Disconnect ABS/TCS control module.
4) Measure resistance between valve relay connector and
body.
Connector & terminal / Specified resistance:
(F11) No. 6—body / 1Ωor less
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Page 1746 of 2248

B4M0446A
6. CHECK HARNESS BETWEEN ABS/TCS CONTROL
MODULE AND VALVE RELAY.
1) Turn ignition switch OFF.
2) Disconnect valve relay.
3) Disconnect ABS/TCS control module.
4) Measure resistance between ABS/TCS control module
connector and body.
Connector & terminal / Specified resistance:
(P6) No. 6—body/1MΩor more
5) Connect valve relay.
6) Measure resistance between ABS/TCS control module
connector and body.
Connector & terminal / Specified resistance:
(P6) No. 6—body / 1Ωor less
B4M0447A
7. CHECK RESISTANCE OF VALVE RELAY TO ABS/
TCS CONTROL MODULE SIDE.
1) Turn ignition switch OFF.
2) Connect valve relay.
3) Disconnect ABS/TCS control module.
4) Measure resistance between ABS/TCS control module
connector terminals.
Connector & terminal / Specified resistance:
(P5) No. 1—(P6) No. 1 / 90±10Ω
B4M0729A
8. CHECK BODY SHORT OF HARNESS.
1) Turn ignition switch OFF.
2) Connect valve relay.
3) Disconnect ABS/TCS control module.
4) Turn ignition switch ON.
5) Measure voltage between ABS/TCS control module
connector and body.
Connector & terminal / Specified voltage:
(P6) No. 1—body / 10—13 V
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8. Diagnostics Chart with Trouble Code
Page 1747 of 2248

J: TROUBLE CODE 52
—FAULTY MOTOR, MOTOR SENSOR AND/
OR MOTOR RELAY—
DIAGNOSIS:
Faulty motor relay
Faulty motor
Faulty motor sensor
Faulty harness/connector
Faulty ABS/TCS control module
TROUBLE SYMPTOM:
ABS does not operate.
TCS does not operate.
1. Check resistance of motor relay.
OK
Not OK
Replace motor relay.
2. Check input voltage of motor relay.
OK
Not OK
Repair harness/connector.
3. Check body short of harness.
OK
Not OK
Repair harness.
4. Check harness between ABS/TCS control
module and motor relay.
OK
Not OK
Repair harness/connector.
5. Check motor operation.
OK
Not OK
Go to step 10.
6. Check resistance of motor sensor.
OK
Not OK
Replace hydraulic unit.
7. Check body short of motor sensor.
OK
Not OK
Replace hydraulic unit.
8. Check harness between ABS/TCS control
module and motor sensor.
OK
Not OK
Repair harness/connector.
9. Check body short of motor sensor harness.
OK
Not OK
Repair harness.
Replace ABS/TCS control module.
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8. Diagnostics Chart with Trouble Code
Page 1748 of 2248
10. Check contact point of motor relay.
OK
Replace motor relay.
11. Check harness between motor and motor
relay.
OK
Repair harness/connector.
12. Check body short of motor harness.
OK
Repair harness.
13. Check ground circuit of motor.
OK
Repair harness/connector.
Replace hydraulic unit.
B4M0741
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8. Diagnostics Chart with Trouble Code
Page 1749 of 2248

B4M0730A
1. CHECK RESISTANCE OF MOTOR RELAY.
1) Turn ignition switch OFF.
2) Remove motor relay.
3) Measure resistance between motor relay terminals.
Terminal / Specified resistance:
No. a—b/57Ω
NOTE:
Apply + to b terminal.
Apply to a terminal.
B4M0451A
2. CHECK INPUT VOLTAGE OF MOTOR RELAY.
1) Turn ignition switch OFF.
2) Disconnect motor relay.
3) Measure voltage between motor relay connector and
body.
Connector & terminal / Specified voltage:
(F10) No. 1—body / 10—13 V
(F10) No. 3—body/0V
4) Turn ignition switch ON.
5) Measure voltage between motor relay connector and
body.
Connector & terminal / Specified voltage:
(F10) No. 1—body / 10—13 V
(F10) No. 3—body / 10—13 V (In 1 second after
turning ignition key ON.)
B4M0452A
3. CHECK BODY SHORT OF HARNESS.
1) Turn ignition switch OFF.
2) Disconnect motor relay.
3) Disconnect ABS/TCS control module.
4) Measure resistance between ABS/TCS control module
connector and body.
Connector & terminal / Specified resistance:
(P6) No. 9—body/1MΩor more
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B4M0731A
4. CHECK HARNESS BETWEEN ABS/TCS CONTROL
MODULE AND MOTOR RELAY.
1) Turn ignition switch OFF.
2) Connect motor relay.
3) Disconnect ABS/TCS control module.
4) Measure resistance between ABS/TCS control module
connector and body.
NOTE:
Apply + to GND.
Apply to (P6) No. 9.
Connector & terminal / Specified resistance:
(P6) No. 9—body / 57±6Ω
5. CHECK MOTOR OPERATION.
1) Connect motor relay.
2) Connect ABS/TCS control module.
3) Operate the TCS sequence check.
4) By the whirring sound check that the motor rotates.
B4M0454A
6. CHECK RESISTANCE OF MOTOR SENSOR.
1) Turn ignition switch OFF.
2) Disconnect motor sensor connector.
3) Measure resistance between motor sensor connector
terminals.
Connector & terminal / Specified resistance:
(F14) No. 1—No.2/72—98Ω
B4M0455A
7. CHECK BODY SHORT OF MOTOR SENSOR.
1) Turn ignition switch OFF.
2) Disconnect motor sensor connector.
3) Measure resistance between motor sensor connector
and body.
Connector & terminal / Specified resistance:
(F14) No. 1—body/1MΩor more
(F14) No. 2—body/1MΩor more
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8. Diagnostics Chart with Trouble Code
Page 1751 of 2248

B4M0456A
8. CHECK HARNESS BETWEEN ABS/TCS CONTROL
MODULE AND MOTOR SENSOR.
1) Turn ignition switch OFF.
2) Connect motor sensor connector.
3) Disconnect ABS/TCS control module.
4) Measure resistance between ABS/TCS control module
connector terminals.
Connector & terminal / Specified resistance:
(P7) No. 3—No. 13 / 72—98Ω
B4M0457A
9. CHECK BODY SHORT OF MOTOR SENSOR
HARNESS.
1) Turn ignition switch OFF.
2) Connect motor sensor connector.
3) Disconnect ABS/TCS control module.
4) Measure resistance between ABS/TCS control module
and body.
Connector & terminal / Specified resistance:
(P7) No. 3—body/1MΩor more
(P7) No. 13—body/1MΩor more
B4M0458A
10. CHECK CONTACT POINT OF MOTOR RELAY.
1) Connect motor relay.
2) Connect ABS/TCS control module.
3) Operate the TCS sequence check.
[W20F0].>
4) Measure voltage between motor relay connector and
body.
Connector & terminal / Specified voltage:
(F10) No. 4—body / 10—14 V (While TCS oper-
ating indicator light is ON.)
B4M0459A
11. CHECK HARNESS BETWEEN MOTOR AND
MOTOR RELAY.
1) Turn ignition switch OFF.
2) Disconnect motor relay.
3) Disconnect motor connector.
4) Measure resistance between motor relay connector and
motor connector.
Connector & terminal / Specified resistance:
(F13) No. 2—(F10) No.4/1Ωor less
B4M0460A
12. CHECK BODY SHORT OF MOTOR HARNESS.
1) Turn ignition switch OFF.
2) Disconnect motor relay.
3) Disconnect motor connector.
4) Measure resistance between motor connector and
body.
Connector & terminal / Specified resistance:
(F13) No. 2—body/1MΩor more
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8. Diagnostics Chart with Trouble Code
Page 1752 of 2248
B4M0461A
13. CHECK GROUND CIRCUIT OF MOTOR.
1) Turn ignition switch OFF.
2) Disconnect motor connector.
3) Measure resistance between motor connector and
body.
Connector & terminal / Specified resistance:
(F13) No. 1—body / 1Ωor less
NOTE:
The check can also be made by analyzing the waves of the
motor sensor output signal with oscilloscope during the
TCS sequence control operation. If the ECM female con-
nector end gives correct value, skip steps 6 through 9
above.
If not, operate the TCS sequence control again and mea-
sure the value at motor sensor male connector end with the
motor sensor connector removed. If the value is OK, pro-
ceed with steps 8 and 9 above.
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8. Diagnostics Chart with Trouble Code