5.3 System

TEST 10L1: CHECK ABS SENSOR OUTPUT USING SCAN TOOL
Read the ABS sensor output corresponding to the faulty system in the scan tool function mode.

NOTE: The scan tool display shows that the front right wheel is rotating at 30 km/h.

CHECK: Does file speed indicated on the display change in response to the speedometer reading during acceleration/deceleration when the steering wheel is in the straight ahead position?
YES: See Test 10L2
NO: See Test 10L8

TEST 10L2: CHECK FOR POOR CONTACT IN CONNECTORS
CHECK: Is there poor contact in connectors between ABS Control Module (ABSCM) and ABS sensor?
YES: Repair connector.
NO: See Test 10L3

TEST 10L3: CHECK SOURCES OF SIGNAL NOISE
CHECK: Is the car telephone or the wireless transmitter properly installed?
YES: See Test 10L4
NO: Properly install the car telephone or the wireless transmitter.

TEST 10L4: CHECK SOURCES OF SIGNAL NOISE
CHECK: Are noise sources (such as an antenna) installed near the sensor harness?
YES: Install the noise sources apart from the sensor harness.
NO: See Test 10L5

TEST 10L5: CHECK SHIELD CIRCUIT
1) Turn ignition switch to OFF.
2) Connect all connectors.
3) Measure resistance between shield connector and chassis ground.
Connector & terminal:
Trouble code 22 / (B100) No. 11 & Chassis ground
Trouble code 24 / (B100) No. 2 & Chassis ground
Trouble code 26 / (P1) No. 8 & Chassis ground
Trouble code 28 / (P1) No. 3 & Chassis ground
CHECK: Is the resistance less than 0.5 ohm?
YES: See Test 10L6
NO: Repair shield harness.

TEST 10L6: 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 10L7

TEST 10L7: CHECK FOR ANY OTHER TROUBLE CODES
CHECK: Are other trouble codes being output?
YES: Proceed with the diagnosis corresponding to the trouble code.
NO: A temporary noise interference is indicated.

TEST 10L8: CHECK ABS SENSOR INSTALLATION
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 10L9
NO: Tighten ABS sensor installation bolts securely.

TEST 10L9: CHECK TONE WHEEL INSTALLATION
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 10L10
NO: Tighten tone wheel installation bolts securely.

TEST 10L10: CHECK ABS 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 10L11
NO: Adjust the gap.

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

TEST 1OL11: CHECK OSCILLOSCOPE
CHECK: Is an oscilloscope available?
YES: See Test 10L12
NO: See Test 10L13

TEST 1OL12: CHECK ABS SENSOR SIGNAL
1) Turn ignition switch OFF.
2) Raise all four wheels of ground.
3) Disconnect connector from ABS control module.
4) Disconnect connector cover from connector.
5) Connect connector to ABS control module.
6) Connect the oscilloscope to the ABS control module connector in accordance with trouble code.
7) Turn ignition switch ON.
8) Rotate wheels and measure voltage at specified frequency.

NOTE: When this inspection is completed, the ABS control module sometimes stores the trouble code 29.

Connector & terminal:
Trouble code 22 / (F49) No. 14 (+) & No. 15 (-)
Trouble code 24 / (F49) No. 49 (+) & No. 19 (-)
Trouble code 26 / (F49) No. 18 (+) & No. 46 (-)
Trouble code 28 / (F49) No. 16 (+) & No. 17 (-)
Specified voltage: 0.12 - 1 Volt (When it is 20 Hz)
CHECK: Is oscilloscope pattern smooth, as shown in figure?
YES: See Test 10L16
NO: See Test 10L13

TEST 10L13: CHECK FOR CONTAMINATION OF ABS SENSOR OR TONE WHEEL
Remove disc rotor or drum from hub in accordance with trouble code.
CHECK: Is the ABS sensor pole piece or the tone wheel contaminated by dirt or other foreign matter?
YES: Thoroughly remove dirt or other foreign matter.
NO: See Test 10L14

TEST 10L14: CHECK FOR ABS SENSOR OR TONE WHEEL DAMAGE
CHECK: Are there broken or damaged teeth in the ABS sensor pole piece or the tone wheel?
YES: Replace ABS sensor or tone wheel.
NO: See Test 10L15

TEST 10L15: CHECK HUB RUNOUT
Measure hub runout.
CHECK: Is the runout less than 0.05 mm (0.0020 inch)?
YES: See Test 10L16
NO: Repair hub.

With Step Roof

TEST 10L16: CHECK ABS SENSOR RESISTANCE
1) Turn ignition switch OFF.
2) Disconnect connector from ABS sensor.
3) Measure resistance between ABS sensor connector terminals.
Trouble code/Connector & terminal:
22/to (B6) No. 1 & No. 2
24/to (B15) No. 1 & No. 2
26/to (P8) No. 1 & No. 2
28/to (P9) No. 1 & No. 2
CHECK: Is the resistance between 0.8 and 1.2 k ohms?
YES: See Test 10L17
NO: Replace ABS sensor.

Without Step Roof

TEST 10L17: CHECK GROUND SHORT OF ABS SENSOR
Measure resistance between ABS sensor and chassis ground.
Trouble code/Connector & terminal:
22/to (B6) No. 1 & Chassis ground
24/to (B15) No. 1 & Chassis ground
26/to (P8) No. 1 & Chassis ground
28/to (P9) No. 1 & Chassis ground
CHECK: Is the resistance more than 1 M ohm?
YES: See Test 10L18
NO: Replace ABS sensor.

Without Step Roof

TEST 10L18: CHECK HARNESS BETWEEN ABSCM AND ABS SENSOR
1) Connect connector to ABS sensor.
2) Disconnect connector from ABS Control Module (ABSCM).
3) Measure resistance at ABSCM connector terminals.
Connector & terminal:
Trouble code 22 / (F49) No. 14 & No. 15
Trouble code 24 / (F49) No. 49 & No. 69
Trouble code 26 / (F49) No. 18 & No. 46
Trouble code 28 / (F49) No. 16 & No. 17
CHECK: Is the resistance between 0.8 and 1.2 k ohms?
YES: See Test 10L19
NO: Repair harness/connector between ABSCM and ABS sensor.

TEST 10L19: CHECK GROUND SHORT OF HARNESS
Measure resistance between ABS Control Module (ABSCM) connector and chassis ground.
Connector & terminal:
Trouble code 22 / (F49) No. 14 & Chassis ground
Trouble code 24 / (F49) No. 49 & Chassis ground
Trouble code 26 / (F49) No. 18 & Chassis ground
Trouble code 28 / (F49) No. 16 & Chassis ground
CHECK: Is the resistance more than 1 M ohm?
YES: See Test 10L20
NO: Repair harness between ABSCM and ABS sensor.

TEST 10L20: CHECK ABSCM GROUND CIRCUIT
1) Turn ignition switch to OFF.
2) Disconnect connector from ABS Control Module (ABSCM).
3)Measure resistance between ABSCM and chassis ground.
Connector & terminal:
(F49) No. 1 & Chassis ground
(F49) No. 55 & Chassis ground
CHECK: Is the resistance less than 0.5 ohm?
YES: See Test 10L21
NO: Repair ABSCM ground harness.

TEST 10L21: CHECK FOR POOR CONTACT IN CONNECTORS
CHECK: Is there poor contact in connectors between ABS Control Module (ABSCM) and ABS sensor?
YES: Repair connector.
NO: See Test 10L22

TEST 10L22: CHECK SOURCES OF SIGNAL NOISE
CHECK: Is the car telephone or the wireless transmitter properly installed?
YES: See Test 10L23
NO: Properly install the car telephone or the wireless transmitter.

TEST 10L23: CHECK SOURCES OF SIGNAL NOISE
CHECK: Are noise sources (such as an antenna) installed near the sensor harness?
YES: Install the noise sources apart from the sensor harness.
NO: See Test 10L24

TEST 10L24: CHECK SHIELD CIRCUIT
1) Connect all connectors.
2) Measure resistance between shield connector and chassis ground.
Connector & terminal:
Trouble code 22 / (B100) No. 11 & Chassis ground
Trouble code 24 / (B100) No. 2 & Chassis ground
Trouble code 26 / (P1) No. 8 & Chassis ground
Trouble code 28 / (P1) No. 3 & Chassis ground
CHECK: Is the resistance less than 0.5 ohm?
YES: See Test 10L25
NO: Repair shield harness.

TEST 10L25: 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 10L26

TEST 10L26: CHECK FOR ANY OTHER TROUBLE CODES
CHECK: Are other trouble codes being output?
YES: Proceed with the diagnosis corresponding to the trouble code.
NO: A temporary noise interference is indicated.