1990 MITSUBISHI SPYDER Service Repair Manual

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Page 1705 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual INSPECTION PROCEDURE FOR TROUBLE SYMPTOMS .
INSPECTION PROCEDURE , .,, , __ ,
Communication with scan not possible. , .
(Communication with all is not Probablecause
[Comment]Th

Page 1706 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual ABS Troubleshooting , ,
INSPECTION PROCEDURE 3When ignition key is turned to “ON” (engine stopped ),
ABS warning light does not illuminate
[Comment]When power is supplied to the

ABS Troubleshooting , ,
INSPECTION PROCEDURE 3When ignition key is turned to “ON” (engine stopped ),
ABS warning light does not illuminate
[Comment]When power is supplied to the ABS-ECU, the valve relay changes from to ON by the initial check, and thus even if there is a problem with the circuit between
ABS light and ABS-ECU, the light will illuminate once when the valve relay
is OFF.
Accordingly, the cause of the light not illuminatin g is probably an open circuit in the
light power circuit, a blown light bulb, or an open circuit in both the circuit between
the ABS
light and the ABS-ECU and the circuit between the ABS light and the ABS valve relay.When other lights also do not illuminate, the cause is probably a blown fuse.
Measure at combination meter connector
l Disconnect the connector and mea-
sure at the harness side.
l Ignition Switch ON
lVoltage between terminal 10 and body
OK Battery positive voltage Check trouble symptoms
Measure at combination meter connector
sure at the combination meter side.
l Continuitv between terminals
R e p l a c e t h e
OK Continuity ,
OK
Check the harnesses between the ABS valve relay and the combination meter,
a n d b e t w e e n t h e A B S - E C U a n d
combination meter (common section).
if necessary.
INSPECTION PROCEDURE 4
TSB Revision.
Even after the engine is started, the ABS Warning l ight ,remains illuminated.. .
[Comment]There is probably a short in the ABS warning light illumination circuit.l Malfunction of combination meterl Malfunction of ABS valve relayl Malfunction of ABS-ECU. ,
NOTE
This trouble symptom is limited to cases where comm unication with the scan tool is’
is normal) and the diagnostic trouble code is a normal diagnostic trouble code..YESDisconnect the ABS-ECU connector Does the light remain illuminated?
NO
Short circuit inside the combination or in the harnessbetween the meter and
Replace the ABS-ECU.

Page 1707 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual When ignition key is turned ABS warning lightProbable.
does not illuminate.
[Comment]The ABS-ECU uses the the which is cut when the ignition switch is’l o f
turned to “START�

Page 1708 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual ABS Troubfeshooting , .
INSPECTION PROCEDURE 7
Break operation is abnormal
[Comment]This varies depending on the driving conditions and the road surface conditions, soproblem diagnosis is d

Page 1709 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual ABS
Needle-nosed wire probe .I
I
Connector terminal. arrangement for
troubleshooting
Terminal arrangement shown on the
special tool connector
0 0 0 0 0 0 7 8
ABS-ECU CHECK
TERMINAL VOLTAG

Page 1710 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual ABS Troubleshooting. ,
Terminal No.Check pointCheck condition,
Ignition OFFo v
Rear solenoid valve (Output)
Ignition switch: ON Batterypositive
voltage
Relay power supply (Output) Ignit

Page 1711 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual RESISTANCE AND CONTINUITY CHECK
1. Turn. the ignition switch to OFF.
2. Disconnect the ABS-ECU connector.
3.Measure the resistance and check for continuity bet ween
the terminal

Page 1712 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual On-vehicle. Service
Check connector
l
harness
ON-VEHICLE SERVICE
C a u t i o n
Use the specified brake fluid. Avoid using a mixture of
the specified brake fluid and other fluid.
S

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