Page 2497 of 2890
: Are there broken or damaged teeth in the
ABS sensor pole piece or the tone wheel?
: Replace ABS sensor or tone wheel.
: Go to next step.
11) Measure hub runout.
: Is the runout less than 0.05 mm (0.0020 in)?
: Go to step10M4.
: Repair hub.
10M4
CHECK ABSCM.
1) Turn ignition switch to OFF.
2) Connect all connectors.
3) Erase the memory.
4) Perform inspection mode.
5) Read out the trouble code.
: Is the same trouble code as in the current
diagnosis still being output?
: Replace ABSCM.
: Go to next.
: Are other trouble codes being output?
: Proceed with the diagnosis corresponding to the
trouble code.
: A temporary poor contact.
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Page 2498 of 2890
B4M0953
N: 31 FR. EV VALVE
—ABNORMAL FRONT RH INLET SOLENOID
VA LV E—
B4M0954
O: 33 FL. EV VALVE
—ABNORMAL FRONT LH INLET SOLENOID
VA LV E—
B4M0955
P: 35 RR. EV VALVE
—ABNORMAL REAR RH INLET SOLENOID
VA LV E—
B4M0956
Q: 37 RL. EV VALVE
—ABNORMAL REAR LH INLET SOLENOID
VA LV E—
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Page 2499 of 2890
DIAGNOSIS:
Faulty harness/connector
Faulty inlet solenoid valve in hydraulic unit
TROUBLE SYMPTOM:
ABS does not operate.
10Q1.Check freeze frame data.
10Q2.Check the condition when the trouble
occurred.
10Q3.Check resistance of solenoid valve.
10Q4.Check ground short of solenoid valve.
10Q5.Check ground short of harness.
10Q6.Check harness connector between ABSCM
and hydraulic unit.
10Q7.Check poor contact in connector between
ABSCM and hydraulic unit.
10Q8.Check ABSCM.
10Q9.Check battery short of solenoid valve.
10Q10.Check battery short of harness.
10Q11.Check resistance of solenoid valve.
10Q12.Check ground short of solenoid valve.
Continues to next page.
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Page 2500 of 2890
From the former page.
10Q13.
Check battery short of solenoid valve.
10Q14.Check battery short of harness.
10Q15.Check ground short of harness.
10Q16.Check harness connector between ABSCM
and hydraulic unit.
10Q17.Check poor contact in connector between
ABSCM and hydraulic unit.
10Q18.Check ABSCM.
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Page 2501 of 2890
WIRING DIAGRAM:
B4M1046
B4M0957A
10Q1
CHECK FREEZE FRAME DATA.
Press F,E,1and 5on the select monitor.
: Is the select monitor LED 5 off? Was the
ABS inactive when the problem occurred?
: Go to step10Q2.
: Go to step10Q11.
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10Q2CHECK THE CONDITION WHEN THE
TROUBLE OCCURRED.
Ask the vehicle owner about driving conditions when the
trouble occurred. Attempt to duplicate the conditions.
: Is the trouble immediately apparent?
: Go to next.
: Go to step 11.
: Did the trouble occur immediately after
engine starting or during standing starts?
: Go to step10Q9.
: Go to step10Q3.
B4M0824B
10Q3CHECK RESISTANCE OF SOLENOID
VA LV E .
1) Turn ignition switch to OFF.
2) Disconnect two connectors (ABS1, F9) from hydraulic
unit.
3) Measure resistance between hydraulic unit connector
terminals.
: Trouble code/Connector & terminal
31/to (F9) No. 4—to (ABS1) No. 2
33/to (F9) No. 1—to (ABS1) No. 2
35/to (F9) No. 2—to (ABS1) No. 2
37/to (F9) No. 3—to (ABS1) No. 2
Is resistance 8.5±0.7Ω?
: Go to step10Q4.
: Replace hydraulic unit.
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Page 2503 of 2890
B4M0825B
10Q4CHECK GROUND SHORT OF SOLENOID
VA LV E .
Measure resistance between hydraulic unit connector and
chassis ground.
: Trouble code/Connector & terminal
31/to (F9) No. 4—Chassis ground
33/to (F9) No. 1—Chassis ground
35/to (F9) No. 2—Chassis ground
37/to (F9) No. 3—Chassis ground
Is resistance more than 1 MΩ?
: Go to step10Q5.
: Replace hydraulic unit.
B4M0828A
10Q5
CHECK GROUND SHORT OF HARNESS.
1) Disconnect connector from ABSCM.
2) Measure resistance between ABSCM connector and
chassis ground.
: Trouble code/Connector & terminal
31/(F49) No. 30—Chassis ground
33/(F49) No. 24—Chassis ground
35/(F49) No. 23—Chassis ground
37/(F49) No. 31—Chassis ground
Is resistance more than 1 MΩ?
: Go to step10Q6.
: Repair harness between ABSCM and hydraulic
unit.
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Page 2504 of 2890

B4M0829A
10Q6CHECK HARNESS CONNECTOR
BETWEEN ABSCM AND HYDRAULIC
UNIT.
1) Connect connector to hydraulic unit.
2) Measure resistance between ABSCM connector termi-
nals.
: Trouble code/Connector & terminal
31/(F49) No. 30—No. 1
33/(F49) No. 24—No. 1
35/(F49) No. 23—No. 1
37/(F49) No. 31—No. 1
Is resistance 9.0±0.7Ω?
: Go to step10Q7.
: Repair harness connector between ABSCM and
hydraulic unit.
10Q7CHECK POOR CONTACT IN CONNEC-
TOR BETWEEN ABSCM AND HYDRAU-
LIC UNIT.
: Is there poor contact in connectors between
ABSCM and hydraulic unit?
: Repair connector.
: Go to step10Q8.
10Q8
CHECK ABSCM.
1) Connect all connectors.
2) Erase the memory.
3) Perform inspection mode.
4) Read out the trouble code.
: Is the same trouble code as in the current
diagnosis still being output?
: Replace ABSCM.
: Go to next.
: Are other trouble codes being output?
: Proceed with the diagnosis corresponding to the
trouble code.
: A temporary poor contact.
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