Page 1737 of 2248
B4M0430
1. CHECK GENERATOR.
1) Idling after warm-up.
2) Measure voltage between generator B terminal and
body.
Connector / Specified voltage:
(F25)—body / 10—15 V
2. CHECK BATTERY TERMINAL.
Check that the positive and negative battery terminals are
firmly fixed.
B4M0431A
3. CHECK INPUT VOLTAGE OF ABS/TCS CONTROL
MODULE.
1) Turn ignition switch OFF.
2) Disconnect connector from ABS/TCS control module.
3) Run the engine at idle.
4) Measure voltage between ABS/TCS control module
connector and body.
Connector & terminal / Specified voltage:
(P5) No. 1—body / 10—15 V
B4M0405A
4. CHECK GROUND CIRCUIT OF ABS/TCS CONTROL
MODULE.
1) Turn ignition switch OFF.
2) Disconnect connector from ABS/TCS control module.
3) Measure resistance between ABS/TCS control module
connector and body.
Connector & terminal / Specified resistance:
(P4) No. 6—body / 1Ωor less
(P5) No. 5—body / 1Ωor less
(P7) No. 15—body / 1Ωor less
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8. Diagnostics Chart with Trouble Code
Page 1738 of 2248

H: TROUBLE CODE 43
—FAULTY ENGINE CONTROL MODULE
COMMUNICATION CABLES—
DIAGNOSIS:
AET communication cable is broken or short circuited.
AEB communication cable is broken or short circuited.
AEC communication cable is broken or short circuited.
Faulty ABS/TCS control module
Faulty engine control module
TROUBLE SYMPTOM:
TCS does not operate.
1. Check communication cables.
OK
Terminal voltage
remains at 4—5.4 V.
Replace ABS/TCS control module.
Terminal voltage
remains at 10—14 V.
Go to step 2.
Terminal voltage
remains at2Vorless.
Go to step 4.
Replace ABS/TCS control module.
2. Check harness between ABS/TCS control
module and ECM.
OK
Not OK
Repair harness.
3. Check ABS/TCS control module internal
circuits.
OK
Not OK
Replace ABS/TCS control module.
Replace engine control module.
4. Check output voltage of ECM.
Not OK
OK
6. Check open circuit of harness.
OK Not OK
Replace ABS/TCS control
module.
5. Check body short of harness.
OK
Not OK
Repair harness/connector.
Replace engine control module.
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8. Diagnostics Chart with Trouble Code
Page 1739 of 2248
B4M0433
B4M0727A
1. CHECK COMMUNICATION CABLES.
1) Operate the TCS sequence control.
2) Measure the voltage between ABS/TCS control module
and the body during the TCS check sequence operation.
Connector & terminal:
(P6) No. 12—body (AET communication cable)
(P6) No. 5—body (AEB communication cable)
(P6) No. 14—body (AEC communication cable)
Specified voltage:
High voltage: 4—5.4 V
Low voltage:2Vorless
Check that each of the above voltage reading
are displayed.
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8. Diagnostics Chart with Trouble Code
Page 1740 of 2248

B4M0435A
2. CHECK HARNESS BETWEEN ABS/TCS CONTROL
MODULE AND ENGINE CONTROL MODULE.
1) Turn ignition switch OFF.
2) Disconnect engine control module.
3) Disconnect ABS/TCS control module.
4) Measure voltage between ABS/TCS control module
connector and body.
Connector & terminal / Specified voltage:
(P6) No. 12—body/0V(AET communication
cable)
(P6) No. 5—body/0V(AEB communication
cable)
(P6) No. 14—body/0V(AEC communication
cable)
5) Turn ignition switch ON.
6) Measure voltage between ABS/TCS control module
connector and body.
Connector & terminal / Specified voltage:
(P6) No. 12—body/0V(AET communication
cable)
(P6) No. 5—body/0V(AEB communication
cable)
(P6) No. 14—body/0V(AEC communication
cable)
B4M0434A
3. CHECK ABS/TCS CONTROL MODULE INTERNAL
CIRCUITS.
1) Turn ignition switch OFF.
2) Disconnect engine control module.
3) Connect ABS/TCS control module.
4) Measure voltage between ABS/TCS control module
connector and body.
Connector & terminal / Specified voltage:
(P6) No. 12—body/2Vorless (AET communica-
tion cable)
(P6) No. 5—body/2Vorless (AEB communica-
tion cable)
(P6) No. 14—body/2Vorless (AEC communi-
cation cable)
5) Turn ignition switch ON.
6) Measure voltage between ABS/TCS control module
connector and body.
Connector & terminal / Specified voltage:
(P6) No. 12—body/2Vorless (AET communica-
tion cable)
(P6) No. 5—body/2Vorless (AEB communica-
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8. Diagnostics Chart with Trouble Code
Page 1741 of 2248

tion cable)
(P6) No. 14—body/2Vorless (AEC communi-
cation cable)
B4M0740A
4. CHECK OUTPUT VOLTAGE OF ENGINE CONTROL
MODULE.
1) Turn ignition switch OFF.
2) Connect engine control module.
3) Connect ABS/TCS control module.
4) Turn ignition switch ON.
5) Measure voltage between engine control module con-
nector and body.
Connector & terminal / Specified voltage:
(B84) No. 74—body / 4—5.4 V (AET communi-
cation cable)
(B84) No. 73—body / 4—5.4 V (AEB communi-
cation cable)
(B84) No. 47—body / 4—5.4 V (AEC communi-
cation cable)
B4M0438A
5. CHECK BODY SHORT OF HARNESS.
1) Turn ignition switch OFF.
2) Disconnect engine control module.
3) Disconnect ABS/TCS control module.
4) Measure resistance between ABS/TCS control module
connector and body.
Connector & terminal / Specified resistance:
(P6) No. 12—body/1MΩor more (AET commu-
nication cable)
(P6) No. 5—body/1MΩor more (AEB communi-
cation cable)
(P6) No. 14—body/1MΩor more (AEC commu-
nication cable)
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8. Diagnostics Chart with Trouble Code
Page 1742 of 2248
B4M0728A
6. CHECK OPEN CIRCUIT OF HARNESS.
1) Turn ignition switch OFF.
2) Disconnect engine control module.
3) Disconnect ABS/TCS control module.
4) Measure resistance between ABS/TCS control module
connector and engine control module connector.
(P6) No. 12—(B84) No. 74 / 1Ωor less (AET commu-
nication
cable)
(P6) No. 5—(B84) No. 73 / 1Ωor less (AEB commu-
nication cable)
(P6) No. 14—(B84) No. 47 / 1Ωor less (AEC com-
munication
cable)
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8. Diagnostics Chart with Trouble Code
Page 1743 of 2248
I: TROUBLE CODE 51
—FAULTY VALVE RELAY—
DIAGNOSIS:
Faulty valve relay
Faulty harness/connector
Faulty ABS/TCS control module
TROUBLE SYMPTOM:
ABS does not operate.
TCS does not operate.
1. Check resistance of valve relay.
OK
Not OK
Replace valve relay.
2. Check contact point of valve relay.
OK
Not OK
Replace valve relay.
3. Check short circuit of valve relay.
OK
Not OK
Replace valve relay.
4. Check input voltage of valve relay.
OK
Not OK
Repair harness/connector.
5. Check ground circuit of valve relay.
OK
Not OK
Repair harness/connector.
6. Check harness between ABS/TCS control
module and valve relay.
OK
Not OK
Repair harness/connector.
7. Check resistance of valve relay to ABS/TCS
control module side.
OK
Not OK
Repair harness/connector.
8. Check body short of harness.
OK
Not OK
Repair harness.
Replace ABS/TCS control module.
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8. Diagnostics Chart with Trouble Code
Page 1744 of 2248
B4M0440
B4M0441
1. CHECK RESISTANCE OF VALVE RELAY.
1) Turn ignition switch OFF.
2) Remove valve relay.
3) Measure resistance between valve relay terminals.
Terminal / Specified resistance:
No. A—B / 90±10Ω
B4M0442
2. CHECK CONTACT POINT OF VALVE RELAY.
1) Turn ignition switch OFF.
2) Remove valve relay.
3) Attach circuit tester probes to terminals as shown in
figure.
4) Measure resistance between respective terminals.
Terminal / Specified resistance:
No. C—E/1Ωor less (When 12 volts applied.)
No. C—E/1MΩor more
(When no voltage is applied.)
No. C—F/1MΩor more
(When 12 volts applied.)
No. C—F/1Ωor less
(When no voltage is applied.)
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8. Diagnostics Chart with Trouble Code