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8W6CHECK POOR CONTACT IN CONNEC-
TORS.
Turn ignition switch to OFF.
: Is there poor contact in connector between
generator, battery and ABSCM&H/U?
to FOREWORD [T3C1].>
: Repair connector.
: Go to step8W7.
8W7
CHECK ABSCM&H/U.
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&H/U.
: Go to step8W8.
8W8CHECK ANY OTHER TROUBLE CODES
APPEARANCE.
: Are other trouble codes being output?
: Proceed with the diagnosis corresponding to the
trouble code.
: A temporary poor contact.
69
4-4dBRAKES [ABS 5.3i TYPE]
8. Diagnostics Chart with Trouble Code by ABS Warning Light
Page 2946 of 3342
X: TROUBLE CODE 54
—ABNORMAL STOP LIGHT SWITCH—
DIAGNOSIS:
Faulty stop light switch
TROUBLE SYMPTOM:
ABS does not operate.
WIRING DIAGRAM:
B4M1258
70
4-4dBRAKES [ABS 5.3i TYPE]
8. Diagnostics Chart with Trouble Code by ABS Warning Light
Page 2947 of 3342

8X1
CHECK STOP LIGHTS COME ON.
Depress the brake pedal.
: Do stop lights come on?
: Go to step8X2.
: Repair stop lights circuit.
B4M1259A
8X2
CHECK OPEN CIRCUIT IN HARNESS.
1) Turn ignition switch to OFF.
2) Disconnect connector from ABSCM&H/U.
3) Depress brake pedal.
4) Measure voltage between ABSCM&H/U connector and
chassis ground.
Connector & terminal
(F49) No. 2 (+)—Chassis ground ( ):
: Is the voltage between 10 V and 15 V?
: Go to step8X3.
: Repair harness between stop light switch and
ABSCM&H/U.
8X3CHECK POOR CONTACT IN CONNEC-
TORS.
: Is there poor contact in connector between
stop light switch and ABSCM&H/U?
FOREWORD [T3C1].>
: Repair connector.
: Go to step8X4.
8X4
CHECK ABSCM&H/U.
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&H/U.
: Go to step8X5.
8X5CHECK ANY OTHER TROUBLE CODES
APPEARANCE.
: Are other trouble codes being output?
: Proceed with the diagnosis corresponding to the
trouble code.
: A temporary poor contact.
71
4-4dBRAKES [ABS 5.3i TYPE]
8. Diagnostics Chart with Trouble Code by ABS Warning Light
Page 2948 of 3342
Y: TROUBLE CODE 56
—ABNORMAL G SENSOR OUTPUT
VOLTAGE—
DIAGNOSIS:
Faulty G sensor output voltage
TROUBLE SYMPTOM:
ABS does not operate.
WIRING DIAGRAM:
B4M1260
72
4-4dBRAKES [ABS 5.3i TYPE]
8. Diagnostics Chart with Trouble Code by ABS Warning Light
Page 2949 of 3342

8Y1CHECK ALL FOUR WHEELS FOR FREE
TURNING.
: Have the wheels been turned freely such as
when the vehicle is lifted up, or operated on
a rolling road?
: The ABS is normal. Erase the trouble code.
: Go to step8Y2.
B4M1248A
8Y2CHECK SPECIFICATIONS OF
ABSCM&H/U.
Check specifications of the mark to the ABSCM&H/U.
Mark Model
C3 AWD AT
C4 AWD MT
: Is an ABSCM for AWD model installed on a
FWD model?
CAUTION:
Be sure to turn ignition switch to OFF when removing
ABSCM&H/U.
: Replace ABSCM&H/U.
: Go to step8Y3.
B4M0911B
8Y3
CHECK INPUT VOLTAGE OF G SENSOR.
1) Turn ignition switch to OFF.
2) Remove console box.
3) Disconnect G sensor from body. (Do not disconnect
connector.)
4) Turn ignition switch to ON.
5) Measure voltage between G sensor connector termi-
nals.
Connector & terminal
(P11) No. 1 (+)—No.3( ):
: Is the voltage between 4.75 and 5.25 V?
: Go to step8Y4.
: Repair harness/connector between G sensor and
ABSCM&H/U.
73
4-4dBRAKES [ABS 5.3i TYPE]
8. Diagnostics Chart with Trouble Code by ABS Warning Light
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B4M1261A
8Y4CHECK OPEN CIRCUIT IN G SENSOR
OUTPUT HARNESS AND GROUND HAR-
NESS.
1) Turn ignition switch to OFF.
2) Disconnect connector from ABSCM&H/U.
3) Measure resistance between ABSCM&H/U connector
terminals.
Connector & terminal
(F49) No. 30—No. 28:
: Is the resistance between 4.3 and 4.9 kΩ?
: Go to step8Y5.
: Repair harness/connector between G sensor and
ABSCM&H/U.
B4M1262A
8Y5CHECK GROUND SHORT IN G SENSOR
OUTPUT HARNESS.
1) Disconnect connector from G sensor.
2) Measure resistance between ABSCM&H/U connector
and chassis ground.
Connector & terminal
(F49) No. 6—Chassis ground:
: Is the resistance more than 1 MΩ?
: Go to step8Y6.
: Repair harness between G sensor and
ABSCM&H/U.
B4M1263A
8Y6
CHECK BATTERY SHORT OF HARNESS.
Measure voltage between ABSCM&H/U connector and
chassis ground.
Connector & terminal
(F49) No. 6 (+)—Chassis ground ( ):
: Is the voltage less than 1 V?
: Go to step8Y7.
: Repair harness between G sensor and
ABSCM&H/U.
74
4-4dBRAKES [ABS 5.3i TYPE]
8. Diagnostics Chart with Trouble Code by ABS Warning Light
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