ABS With TCS Trouble Code Charts For Warning Light Codes

DIAGNOSIS
^ Faulty motor relay.
^ Faulty motor.
^ Faulty motor sensor.
^ Faulty harness.
^ Faulty ABS/Traction Control System (TCS) control module.

TROUBLE SYMPTOMS
^ ABS does not operate.
^ TCS does not operate.

PROCEDURE
1. Check resistance of motor relay.
a) Turn ignition switch OFF.
b) Remove motor relay.





c) Measure resistance between motor relay terminals.
Terminal / Specified resistance:
a & b / 57 ohms

2. Check input voltage of motor relay.
a) Turn ignition switch OFF.
b) Disconnect motor relay.





c) Measure voltage between motor relay connector and body.
Connector & terminal / Specified voltage:
(F10) No. 1 & body / 12 Volts
(F10) No. 3 & body / 0 Volts
d) Turn ignition switch ON.
e) Measure voltage between motor relay connector and body.
Connector & terminal / Specified voltage:
(F10) No. 1 & body / 12 Volts
(F10) No. 3 & body / 12 Volts (In 1 second after turning ignition key ON.)

3. Check body short of harness.
a) Turn ignition switch OFF.
b) Disconnect motor relay.
c) Disconnect ABS/TCS control module.





d) Measure resistance between ABS/TCS control module connector and body.
Connector & terminal / Specified resistance:
(P6) No. 9 & body / 1 M ohm

4. Check harness between ABS/TCS control module and motor relay.
a) Turn ignition switch OFF.
b) Connect motor relay.
c) Disconnect ABS/TCS control module.





d) Measure resistance between ABS/TCS control module connector and body.
Connector & terminal / Specified resistance:
(P6) No.9 & body / 57 ohms

5. Check motor operation.
a) Operate the TCS sequence check.
b) By the whirring sound check that the motor rotates.

6. Check resistance of motor sensor.
a) Turn ignition switch OFF.
b) Disconnect motor sensor connector.





c) Measure resistance between motor sensor connector terminals.
Connector & terminal / Specified resistance:
(F14) No. 1 & No. 2 / 85 ohms

7. Check body short of motor sensor.
a) Turn ignition switch OFF.
b) Disconnect motor sensor connector.





c) Measure resistance between motor sensor connector and body.
Connector & terminal / Specified resistance:
(F14) No. 1 & body / 1 M ohm
(F14) No. 2 & body / 1 M ohm

8. Check harness between ABS/TCS control module and motor sensor.
a) Turn ignition switch OFF.
b) Connect motor sensor connector.
c) Disconnect ABS/TCS control module.





d) Measure resistance between ABS/TCS control module connector terminals.
Connector & terminal / Specified resistance:
(P7) No. 3 & No. 13 / 85 ohms

9. Check body short of motor sensor harness.
a) Turn ignition switch OFF.
b) Connect motor sensor connector.
c) Disconnect ABS/TCS control module.





d) Measure resistance between ABS/TCS control module and body.
Connector & terminal / Specified resistance:
(P7) No. 3 & body / 1 M ohm
(P7) No. 13 & body / 1 M ohm

10. Check contact point of motor relay.
a) Operate the TCS sequence check.





b) Measure voltage between motor relay connector and body.
Connector & terminal / Specified voltage:
(F10) No. 4 & body / 13.5 Volts (While TCS operating indicator light is ON.)

11. Check harness between motor and motor relay.
a) Turn ignition switch OFF.
b) Disconnect motor relay.
c) Disconnect motor connector.





d) Measure resistance between motor relay connector and motor connector.
Connector & terminal / Specified resistance:
(F13) No. 2 & (F10) No. 4 / 0 ohms

12. Check body short of motor harness.
a) Turn ignition switch OFF.
b) Disconnect motor relay.
c) Disconnect motor connector.





d) Measure resistance between motor connector and body.
Connector & terminal / Specified resistance:
(F13) No.2 & body / 1 M ohm

13. Check ground circuit of motor.
a) Turn ignition switch OFF.
b) Disconnect motor connector.





c) Measure resistance between motor connector and body.
Connector & terminal / Specified resistance:
(F13) No. 1 & body / 0 ohms

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 connector end gives correct value, skip steps 6 through 9 above.
If not, operate the TCS sequence control again and measure the value at motor sensor male connector end with the motor sensor connector removed. If the value is OK, proceed with steps 8 and 9 above.