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B4M0082D
2. CLEARING MEMORY
1) After calling up a trouble code, disconnect diagnosis
connector terminal 6 from diagnosis terminal.
2) Repeat 3 times within approx. 12 seconds; connecting
and disconnecting terminal 6 and diagnosis terminal for at
least 0.05 seconds each time.
B4M0233A
NOTE:
After diagnostics is completed, make sure to clear memory.
Make sure only start code (11) is shown after memory is
cleared.
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4-4cBRAKES [ABS 5.3 TYPE]
6. Diagnostics Chart for On-board Diagnosis System
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7. Diagnostics Chart for ABS Warning
Light Circuit and Diagnosis Circuit
Failure
A: ABS WARNING LIGHT DOES NOT COME
ON.
DIAGNOSIS:
ABS warning light circuit is open or shorted.
TROUBLE SYMPTOM:
When ignition switch is turned ON (engine OFF), ABS
warning light does not come on.
7A1.Check if other warning lights turn on.
7A2.Check ABS warning light bulb.
7A3.Check wiring harness.
7A4.Check battery short of relay box.
7A5.Check poor contact in connector between
combination meter and ABSCM.
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4-4cBRAKES [ABS 5.3 TYPE]
7. Diagnostics Chart for ABS Warning Light Circuit and Diagnosis Circuit Failure
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WIRING DIAGRAM:
B4M1034
7A1CHECK IF OTHER WARNING LIGHTS
TURN ON.
Turn ignition switch to ON (engine OFF).
: Do other warning lights turn on?
: Go to step7A2.
: Repair combination meter.
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4-4cBRAKES [ABS 5.3 TYPE]
7. Diagnostics Chart for ABS Warning Light Circuit and Diagnosis Circuit Failure
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7A2
CHECK ABS WARNING LIGHT BULB.
1) Turn ignition switch to OFF.
2) Remove combination meter.
3) Remove ABS warning light bulb from combination
meter.
: Is ABS warning light bulb OK?
: Go to step7A3.
: Replace ABS warning light bulb.
B4M0791A
7A3
CHECK WIRING HARNESS.
1) Disconnect connector from ABSCM.
2) Disconnect connector (F50) from relay box.
3) Turn ignition switch to ON.
4) Measure voltage between connector (F49) and chassis
ground.
: Connector & terminal
(F49) No. 54 (+) — Chassis ground ( ):
Is voltage 12 V?
: Go to next step.
: Repair broken wire in harness or connector.
5) Turn ignition switch to OFF.
6) Measure voltage between ABSCM connector (F49) and
chassis ground.
: Connector & terminal
(F49) No. 54 (+) — Chassis ground ( ):
Is voltage less than 3 V?
: Go to step7A4.
: Repair battery short of harness.
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4-4cBRAKES [ABS 5.3 TYPE]
7. Diagnostics Chart for ABS Warning Light Circuit and Diagnosis Circuit Failure
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B4M0792B
7A4CHECK BATTERY SHORT OF RELAY
BOX.
1) Disconnect connector from relay box.
2) Turn ignition switch to ON.
3) Measure voltage between relay box and chassis
ground.
: Connector & terminal
To (F50) No. 2 (+)—Chassis ground ( ):
Is voltage 0 V?
: Go to next step.
: Replace relay box.
4) Turn ignition switch OFF.
5) Measure voltage between relay box and chassis
ground.
: Connector & terminal
To (F50) No. 2 (+)—Chassis ground ( ):
Is voltage 0 V?
: Go to step7A5.
: Replace relay box.
7A5CHECK POOR CONTACT IN CONNEC-
TOR BETWEEN COMBINATION METER
AND ABSCM.
: Is there poor contact in connectors between
combination meter and ABSCM?
: Repair connector.
: Replace ABSCM.
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4-4cBRAKES [ABS 5.3 TYPE]
7. Diagnostics Chart for ABS Warning Light Circuit and Diagnosis Circuit Failure
Page 2358 of 2890
B: ABS WARNING LIGHT DOES NOT GO
OFF.
DIAGNOSIS:
ABS warning light circuit is open or shorted.
TROUBLE SYMPTOM:
When starting the engine and while ABS warning light is
kept ON.
7B1.Check installation of ABSCM connector.
7B2.Check generator.
7B3.Check battery terminal.
7B4.Check power supply of ABSCM.
7B5.Check ground circuit of ABSCM.
7B6.Check wiring harness.
7B7.Check relay box.
7B8.Check valve relay.
7B9.Check hydraulic control unit.
7B10.Check diagnosis terminal.
7B11.Check diagnosis line.
7B12.Check poor contact in ABSCM connector.
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4-4cBRAKES [ABS 5.3 TYPE]
7. Diagnostics Chart for ABS Warning Light Circuit and Diagnosis Circuit Failure
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WIRING DIAGRAM:
B4M1034
7B1CHECK INSTALLATION OF ABSCM CON-
NECTOR.
Turn ignition switch to OFF.
: Is ABSCM connector inserted into ABSCM
until the clamp locks onto it?
: Go to step7B2.
: Insert ABSCM connector into ABSCM until the
clamp locks onto it.
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4-4cBRAKES [ABS 5.3 TYPE]
7. Diagnostics Chart for ABS Warning Light Circuit and Diagnosis Circuit Failure
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