Page 2549 of 3342
1. Check correct installation of stroke sensor.
OK
Not OK
Repair stroke sensor.
2. Check resistance of stroke sensor.
OK
Not OK
Replace stroke sensor.
3. Check stroke sensor operation.
OK
Not OK
Replace stroke sensor.
4. Check body short of stroke sensor.
OK
Not OK
Replace stroke sensor.
5. Check contact point of stop light switch.
OK
Not OK
Replace stroke sensor.
6. Check body short of stop light switch.
OK
Not OK
Replace stroke sensor.
7. Check power supply of stop light switch.
OK
Not OK
Repair harness/connector.
8. Check input voltage of ABS/TCS control mod-
ule.
OK
Not OK
Repair harness/connector.
9. Check stop light circuit.
OK
Not OK
Repair harness/connector.
Replace stop light bulb and/or fuse.
10. Check harness between stroke sensor and
ABS/TCS control module.
OK
Not OK
Repair harness/connector.
11. Check body short of stroke sensor harness.
OK
Not OK
Repair harness.
12. Check pump unit operation.
OK
Not OK
Replace hydraulic unit.
Replace ABS/TCS control module.
73
4-4bBRAKES
8. Diagnostics Chart with Trouble Code
Page 2550 of 3342
B4M0732
1. CHECK CORRECT INSTALLATION OF STROKE
SENSOR.
1) Check that the stroke sensor is firmly installed without
play.
2) Check that the stop lamp does not remain illuminated.
B4M0463A
2. CHECK RESISTANCE OF STROKE SENSOR.
1) Turn ignition switch OFF.
2) Disconnect stroke sensor connectors.
3) Remove stroke sensor.
4) Measure resistance between stroke sensor terminals.
Terminal / Specified resistance:
No. 1—No. 3 / 570—630Ω
74
4-4bBRAKES
8. Diagnostics Chart with Trouble Code
Page 2551 of 3342
B4M0464A
3. CHECK STROKE SENSOR OPERATION.
1) Turn ignition switch OFF.
2) Disconnect stroke sensor connectors.
3) Remove stroke sensor.
4) Measure the stroke sensor resistance against the rod
stroke.
Terminal:
No. 3—No. 2
Stroke
Unit: mm (in)Specified
resistance
0—3.1±0.5 (0—0.122±0.020) 95—105Ω
3.1—5.5±0.5 (0.122—0.217±0.020) 190—210Ω
5.5—7.9±0.5 (0.217—0.311±0.020) 285—315Ω
7.9—10.3±0.5 (0.311—0.406±0.020) 380—420Ω
10.3—18±0.5 (0.406—0.709±0.020) 475—525Ω
NOTE:
Stroke = 0 when the stroke sensor rod is completely drawn
into the sensor unit.
B4M0465A
4. CHECK BODY SHORT OF STROKE SENSOR.
1) Turn ignition switch OFF.
2) Disconnect stroke sensor connectors.
3) Remove stroke sensor.
4) Measure resistance between stroke sensor terminal
and stroke sensor threads.
Terminal / Specified resistance:
No. 1—stroke sensor threads/ 1 MΩor more
No. 2—stroke sensor threads/ 1 MΩor more
No. 3—stroke sensor threads/ 1 MΩor more
B4M0466A
5. CHECK CONTACT POINT OF STOP LIGHT
SWITCH.
1) Turn ignition switch OFF.
2) Disconnect stroke sensor connectors.
3) Remove stroke sensor.
4) Measure resistance between stroke sensor terminals.
Terminal:
No. 2—No. 3
Stroke
Unit mm (in)Specified
resistance
0—2.2±1.0 (0—0.087±0.039) 1 MΩor more
2.2±1.0—18.0±0.5 (0.087±0.039—0.709±0.020) 1Ωor less
NOTE:
Stroke = 0 when the rod is completely drawn in.
75
4-4bBRAKES
8. Diagnostics Chart with Trouble Code
Page 2552 of 3342
B4M0467A
6. CHECK BODY SHORT OF STOP LIGHT SWITCH.
1) Turn ignition switch OFF.
2) Disconnect stroke sensor connectors.
3) Remove stroke sensor.
4) Measure resistance between stroke sensor terminal
and stroke sensor threads.
Terminal / Specified resistance:
No. 2—stroke sensor threads/1MΩor more
No. 3—stroke sensor threads/1MΩor more
B4M0468A
7. CHECK POWER SUPPLY OF STOP LIGHT
SWITCH.
1) Turn ignition switch OFF.
2) Disconnect stroke sensor connector.
3) Measure voltage between stroke sensor connector and
body.
Connector & terminal / Specified voltage:
(B67) No. 3—body / 10—13 V
B4M0469A
8. CHECK INPUT VOLTAGE OF ABS/TCS CONTROL
MODULE.
1) Turn ignition switch OFF.
2) Install stroke sensor.
3) Connect stop light switch connector.
4) Disconnect ABS/TCS control module connector.
5) Measure voltage between ABS/TCS control module
connector and body.
Connector & terminal / Specified voltage:
(P7) No. 7—body / 10—13 V (With brake pedal
depressed)
(P7) No. 7—body/0V(Without brake pedal
depressed)
9. CHECK STOP LIGHT CIRCUIT.
1) Turn ignition switch OFF.
2) Install stroke sensor.
3) Connect stroke sensor connector.
4) Connect ABS/TCS control module connector.
5) Depress brake pedal and check that the stop light
comes on.
76
4-4bBRAKES
8. Diagnostics Chart with Trouble Code
Page 2553 of 3342
B4M0470A
10. CHECK HARNESS BETWEEN STROKE SENSOR
AND ABS/TCS CONTROL MODULE.
1) Turn ignition switch OFF.
2) Install stroke sensor.
3) Connect stroke sensor connector.
4) Disconnect ABS/TCS control module connector.
5) Measure resistance between ABS/TCS control module
connector terminals.
Connector & terminal / Specified resistance:
(P7) No. 4—No. 14 / 570—630Ω
(P7) No. 5—No. 14 / 95—105Ω
NOTE:
Do not depress brake pedal.
B4M0471A
11. CHECK BODY SHORT OF STROKE SENSOR
HARNESS.
1) Turn ignition switch OFF.
2) Connect stroke sensor connector.
3) Disconnect ABS/TCS control module connector.
4) Measure resistance between ABS/TCS control module
connector and body.
Connector & terminal / Specified resistance:
(P7) No. 4—body/1MΩor more
(P7) No. 5—body/1MΩor more
(P7) No. 14—body/1MΩor more
12. CHECK PUMP UNIT OPERATION.
1) Turn ignition switch OFF.
2) Connect stroke sensor connector.
3) Connect stop light switch connector.
4) Connect ABS/TCS control module connector.
5) Operate the TCS sequence control and check that the
front brake fluid pressure increases and decreases cor-
rectly.
77
4-4bBRAKES
8. Diagnostics Chart with Trouble Code
Page 2554 of 3342
L: TROUBLE CODE 57
—FAULTY FLUID LEVEL SENSOR—
DIAGNOSIS:
Faulty fluid level sensor circuit
Faulty harness/connector
Faulty ABS/TCS control module
Faulty generator
TROUBLE SYMPTOM:
ABS does not operate.
TCS does not operate.
1. Check engine trouble code.
Ye sNO
5. Check generator function.
OK
Not OK
Repair generator.
6. Check input voltage of ABS/TCS control
module.
OK
Not OK
Repair harness/connector.
Replace ABS/TCS control module.
2. Check input voltage of ABS/TCS control module.
OK
Not OK
Repair harness/connector.
3. Check ground short of harness.
OK
Not OK
Repair harness.
4. Check ground circuit of ABS/TCS control module.
OK
Not OK
Repair harness/connector.
Replace ABS/TCS control module.
78
4-4bBRAKES
8. Diagnostics Chart with Trouble Code
Page 2557 of 3342
M: TROUBLE CODE 58
—FAULTY PRESSURE SWITCH—
DIAGNOSIS:
Faulty pressure switch
Faulty stop light switch
Faulty harness/connector
Faulty ABS/TCS control module
TROUBLE SYMPTOM:
TCS does not operate.
1. Check contact point of pressure switch.
OK
Not OK
Replace hydraulic unit.
2. Check body short of pressure switch.
OK
Not OK
Replace hydraulic unit.
3. Check harness between pressure switch and
ABS/TCS control module.
OK
Not OK
Repair harness/connector.
4. Check body short of pressure switch harness.
OK
Not OK
Repair harness.
5. Check contact point of stop light switch.
OK
Not OK
Replace stroke sensor.
6. Check body short of stop light switch.
OK
Not OK
Replace stroke sensor.
7. Check power supply of stop light switch.
OK
Not OK
Repair harness.
8. Check input voltage of ABS/TCS control mod-
ule.
OK
Not OK
Repair harness/connector.
Replace ABS/TCS control module.
81
4-4bBRAKES
8. Diagnostics Chart with Trouble Code
Page 2559 of 3342
B4M0735A
2. CHECK BODY SHORT OF PRESSURE SWITCH.
1) Turn ignition switch OFF.
2) Disconnect hydraulic unit connector.
3) Measure resistance between hydraulic unit connector
and body.
Connector & terminal / Specified resistance:
(F12) No. 1—body/1MΩor more
(F12) No. 2—body/1MΩor more
B4M0477A
3. CHECK HARNESS BETWEEN PRESSURE SWITCH
AND ABS/TCS CONTROL MODULE.
1) Turn ignition switch OFF.
2) Connect hydraulic unit connector.
3) Disconnect ABS/TCS control module connector.
4) Measure resistance between ABS/TCS control module
connector terminals.
Connector & terminal / Specified resistance:
(P7) No. 6—No.18/1MΩor more (With brake
pedal
depressed)
(P7) No. 6—No. 18 / 1Ωor less (Without brake
pedal depressed)
B4M0478A
4. CHECK BODY SHORT OF PRESSURE SWITCH
HARNESS.
1) Turn ignition switch OFF.
2) Disconnect ABS/TCS control module connector.
3) Measure resistance between ABS/TCS control module
connector and body.
Connector & terminal / Specified resistance:
(P7) No. 6—body/1MΩor more
(P7) No. 18—body/1MΩor more
B4M0466A
5. CHECK CONTACT POINT OF STOP LIGHT
SWITCH.
1) Turn ignition switch OFF.
2) Disconnect stop light switch connectors.
3) Remove stroke sensor.
4) Measure resistance between stroke sensor terminals.
83
4-4bBRAKES
8. Diagnostics Chart with Trouble Code
