Page 641 of 2100

5A±22BRAKE CONTROL SYSTEM
F05R200006
Basic Diagnostic Flow Chart
StepActionYe sNo
11. Verify complaint with the customer.
2. Questioning to customer.
3. Basic inspection (Refer to
Basic inspection procedure)
Using TECH 2?
Go to Step 2Go to Step 4
2Verify DTC through: ªF0: Diagnostic Trouble Codes.º
Is the DTC stored in the EHCU?Clear code and
check for
repeatability.
Go to
Step 3Go to Step 5
31. Repair of faulty part.
2. Clear DTC.
3. Inspection of ªABSº W/L Illumination pattern with ignition SW
ªONº.
4. Test drive.
Does trouble repeat?
Repeat the
diagnosis it the
symptom or DTC
appears again
Go to
Step 1Go to Step 5
4Verify DTC through: ªF0: Diagnostic Trouble Codes.º
Is the DTC stored in the EHCU?
Clear code and
check for
repeatability
Go to
Step 3
Trouble diagnosis
based on
symptom (Refer
to
Symptom
Diagnosis
)
Go to
Step 3
51. Reconnect all components. Ensure that all component are
properly mounted.
2. Clear diagnostic trouble code.
Was this step finished?
FinishedGo to Step 5
Page 642 of 2100
5A±23
BRAKE CONTROL SYSTEM
Basic Inspection Procedure
1. Basic Inspection of Service Brake
StepActionYe sNo
1Is the fluid level normal?
Go to Step 2
Replenish with
fluid
Go to
Step 2
2Does fluid leak?Repair
Go to
Step 3Go to Step 3
3Is the booster functioning properly?
Go to Step 4
Repair
Go to
Step 4
4Is the pad and rotor within specs?
Go to Step 5
Repair
Go to
Step 5
5Reconnect all components. Ensure all component are properly
mounted.
Was this step finished?
FinishedGo to Step 5
2. Ground Inspection
StepActionYe sNo
1Is there good contact with the ABS ground points?
Go to Step 2
Repair
Go to
Step 2
2Reconnect all components. Ensure that all component are
properly mounted.
FinishedGo to Step 2
Page 643 of 2100

5A±24BRAKE CONTROL SYSTEM
EHCU Connector Pin-out Checks
Disconnect Electronic Hydraulic Control Module.
Perform checks with high impedance digital
multimeter J-39200 or equivalent.
No.
Circuit to be TestedIgnition
Switch
PositionMultimeter
Scale/RangeMeasure
between Pin
NumberNominal ValueNote
1Power supplyOFF20DCV1 (C±5)
2 (C±5)11.5V to 14.5V
2Ignition enableOFF20DCV1 (C±6)
7 (C±6)0V to 0.1V
ON20DCV1 (C±6)
7 (C±6)11.5V to 14.5V
3Stoplamp switchOFF20DCV13 (C±6)
7 (C±6)10.5V to 14.5VPress brake pedal
4Ground connectionOFF2007 (C±6)
GroundLess than 2
OFF12 (C±5)
GroundLess than 0.2
5FL speed sensorOFF2k 2 (C±6)
10 (C±6)2.0k to 2.8kInternal Resistance
OFF200k2 (C±6)
7 (C±6)more than
100kInsulation Resistance
OFF200mACV 2 (C±6)
10 (C±6)more than
200mVTurn wheel at 1RPS
6FR speed sensorOFF2k 3 (C±6)
11 (C±6)2.0k to 2.8kInternal Resistance
OFF200k3 (C±6)
7 (C±6)more than
100kInsulation Resistance
OFF200mACV 3 (C±6)
11 (C±6)more than
200mVTurn wheel at 1RPS
7RR speed sensorOFF2k 4 (C±6)
12 (C±6)1.2k to 2.0kInternal Resistance
OFF200k4 (C±6)
7 (C±6)more than
100kInsulation Resistance
OFF200mACV 4 (C±6)
12 (C±6)more than
200mVTurn wheel at 1RPS
Page 644 of 2100
5A±25
BRAKE CONTROL SYSTEM
Circuit Diagram
D05R200004
Page 645 of 2100
5A±26BRAKE CONTROL SYSTEM
D05R200002
Page 646 of 2100
5A±27
BRAKE CONTROL SYSTEM
D05R200003
Page 647 of 2100
5A±28BRAKE CONTROL SYSTEM
Connector List
No.Connector face
B-15
C-1
C-28
C-5
C-6
C-10
C-16
E-23
C-27
C-37
C-39
F-4
No.Connector face
H-5
H-8
H-14
H-16
H-20
I-18
I-23
I-24
X-15
Page 648 of 2100
5A±29
BRAKE CONTROL SYSTEM
Part Location
810R200002
Legend
(1) Battery
(2) Fuse & Relay Box
(3) C±16
(4) C±5
(5) C±6
(6) H±8, 14
(7) I±18
(8) Starter Switch(9) I±24
(10) C±39
(11) F±4
(15) C±10
(16) C±28
(17) H±5
(19) E±23
(21) C±1