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B4M0964
X: 44 CCM LINE
—A COMBINATION OF AT CONTROL
ABNORMALS—
DIAGNOSIS:
Combination of AT control faults
TROUBLE SYMPTOM:
ABS does not operate.
10X1.Check specifications of ABSCM using select
monitor.
10X2.Check ground short of harness.
10X3.Check AT control module.
10X4.Check open circuit of harness.
10X5.Check poor contact in connector between AT
control module and ABSCM.
10X6.Check ABSCM.
189
4-4cBRAKES [ABS 5.3 TYPE]
10. Diagnostics Chart with Select Monitor
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WIRING DIAGRAM:
B4M1040
B4M0921
10X1CHECK SPECIFICATIONS OF ABSCM
USING SELECT MONITOR.
1) Press F,0and 0on the select monitor.
2) Read the select monitor display.
: Is an ABSCM for AT model installed on a MT
model?
: Replace ABSCM.
: Go to step10X2.
190
4-4cBRAKES [ABS 5.3 TYPE]
10. Diagnostics Chart with Select Monitor
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B4M0846A
10X2
CHECK GROUND SHORT OF HARNESS.
1) Turn ignition switch to OFF.
2) Disconnect two connectors from AT control module.
3) Disconnect connector from ABSCM.
4) Measure resistance between ABSCM connector and
chassis ground.
: Connector & terminal
(F49) No. 12—Chassis ground
Is resistance more than 1 MΩ?
: Go to step10X3.
: Repair harness between AT control module and
ABSCM.
B4M0848B
10X3
CHECK AT CONTROL MODULE.
1) Connect all connectors to AT control module.
2) Turn ignition switch to ON.
3) Measure voltage between AT control module connector
terminals.
: Connector & terminal
(B55) No. 1 (+)—(B56) No. 5 ( )
Is voltage 10—13 V?
: Go to step10X4.
: Go to next step.
B4M0849B
4) Measure voltage between AT control module connector
and chassis ground.
: Connector & terminal
(B54) No. 6 (+)—Chassis ground ( )
(B55) No. 1 (+)—Chassis ground ( )
Is voltage 10—13 V?
: Replace AT control module.
: Repair harness connector between battery, igni-
tion switch and AT control module.
191
4-4cBRAKES [ABS 5.3 TYPE]
10. Diagnostics Chart with Select Monitor
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