Diagnostic Charts

TEST 8E1: CHECK ABS SENSOR
1) Turn ignition switch to OFF.
2) Disconnect connector from ABS sensor.
3) Measure resistance of ABS sensor connector terminals.
Terminal:
Front RH No. 1 & No. 2
Front LH No. 1 & No. 2
Rear RH No. 1 & No. 2
Rear LH No. 1 & No. 2
CHECK: Is the resistance between 0.8 and 1.2 k ohms?
YES: See Test 8E2
NO: Replace ABS sensor.





TEST 8E2: CHECK BATTERY SHORT OF ABS SENSOR
1) Disconnect connector from ABS Control Module (ABSCM).
2) Measure voltage between ABS sensor and chassis ground.
Terminal:
Front RH No. 1 (+) & Chassis ground (-)
Front LH No. 1 (+) & Chassis ground (-)
Rear RH No. 1 (+) & Chassis ground (-)
Rear LH No. 1 (+) & Chassis ground (-)
CHECK: Is the voltage less than 1 Volt?
YES: See Test 8E3
NO: Replace ABS sensor.





TEST 8E3: CHECK BATTERY SHORT OF ABS SENSOR
1) Turn ignition switch to ON.
2) Measure voltage between ABS sensor and chassis ground.
Terminal:
Front RH No. 1 (+) & Chassis ground (-)
Front LH No. 1 (+) & Chassis ground (-)
Rear RH No. 1 (+) & Chassis ground (-)
Rear LH No. 1 (+) & Chassis ground (-)
CHECK: Is the voltage less than 1 Volt?
YES: See Test 8E4
NO: Replace ABS sensor.





TEST 8E4: CHECK HARNESS/CONNECTOR BETWEEN ABSCM AND ABS SENSOR
1) Turn ignition switch to OFF.
2) Connect connector to ABS sensor.
3) Measure resistance between ABS Control Module (ABSCM) connector terminals.
Connector & terminal:
Trouble code 21 / (F49) No. 14 & No. 15
Trouble code 23 / (F49) No. 49 & No. 19
Trouble code 25 / (F49) No. 18 & No. 46
Trouble code 27 / (F49) No. 16 & No. 17
CHECK: Is the resistance between 0.8 and 1.2 k ohms?
YES: See Test 8E5
NO: Repair harness/connector between ABSCM and ABS sensor.





TEST 8E5: CHECK BATTERY SHORT OF HARNESS
Measure voltage between ABS Control Module (ABSCM) connector and chassis ground.
Connector & terminal:
Trouble code 21 / (F49) No. 14 (+) & Chassis ground (-)
Trouble code 23 / (F49) No. 49 (+) & Chassis ground (-)
Trouble code 25 / (F49) No. 18 (+) & Chassis ground (-)
Trouble code 27 / (F49) No. 16 (+) & Chassis ground (-)
CHECK: Is the voltage less than 1 Volt?
YES: See Test 8E6
NO: Repair harness between ABSCM and ABS sensor.





TEST 8E6: CHECK BATTERY SHORT OF HARNESS
1) Turn ignition switch to ON.
2) Measure voltage between ABS Control Module (ABSCM) connector and chassis ground.
Connector & terminal:
Trouble code 21 / (F49) No. 14 (+) & Chassis ground (-)
Trouble code 23 / (F49) No. 49 (+) & Chassis ground (-)
Trouble code 25 / (F49) No. 18 (+) & Chassis ground (-)
Trouble code 27 / (F49) No. 16 (+) & Chassis ground (-)
CHECK: Is the voltage less than 1 Volt?
YES: See Test 8E7
NO: Repair harness between ABSCM and ABS sensor.

TEST 8E7: CHECK INSTALLATION OF ABS SENSOR
Tightening torque: 32 ± 10 Nm (3.3 ± 1.0 kg-m, 24 ± 7 ft. lbs.)

CHECK: Are the ABS sensor installation bolts tightened securely?
YES: See Test 8E8
NO: Tighten ABS sensor installation bolts securely.

TEST 8E8: CHECK INSTALLATION OF TONE WHEEL
Tightening torque: 13 ± 3 Nm (1.3 ± 0.3 kg-m, 9 ± 2.2 ft. lbs.)

CHECK: Are the tone wheel installation bolts tightened securely?
YES: See Test 8E9
NO: Tighten tone wheel installation bolts securely.








TEST 8E9: CHECK ABS SPEED SENSOR GAP
Measure tone wheel-to-pole piece gap over entire perimeter of the wheel.





CHECK: Is the gap within the specifications shown in the table?
YES: See Test 8E10
NO: Adjust the gap.

NOTE: Adjust the gap using spacers (Part No. 26755AA000) or equivalent. If spacers cannot correct the gap, replace worn sensor or worn tone wheel.

TEST 8E10: CHECK HUB RUNOUT
Measure hub runout.

CHECK: Is the runout less than 0.05 mm (0.0020 inch)?
YES: See Test 8E11
NO: Repair hub.

TEST 8E11: CHECK FOR POOR CONTACT IN CONNECTORS
Is there poor contact in connectors between ABS Control Module (ABSCM) and ABS sensor?
NO: See Test 8E12
YES: Repair connector.

TEST 8E12: CHECK ABSCM
1) Connect all connectors.
2) Erase the memory.
3) Perform inspection mode. Inspection Mode - On-Board Diagnostics (OBD)
4) Read out the trouble code.
CHECK: Is the same trouble code as in the current diagnosis still being output?
YES: Replace ABS Control Module (ABSCM).
NO: See Test 8E13

TEST 8E13: CHECK ANY OTHER TROUBLE CODES OUTPUT
Are other trouble codes being output?

YES: Proceed with the diagnosis corresponding to the trouble code.
NO: A temporary poor contact is indicated.

NOTE: Check harness and connectors between ABS Control Module (ABSCM) and ABS sensor.