display MITSUBISHI SPYDER 1990 Service Owner's Guide

ABS
TROUBLESHOOTING
Check diagnostic trouble codeC h e c k d i a g n o s t i c t r o u b l e c o d e to to
No diagnostic troubleDiagnostic trouble codecode or can’t Diagnostic trouble
displayed c o d e
nicate with scan tool Recheck diagnostic trouble code(s)
then erase (Refer to
No diagnostic trouble
code
.
DIAGNOSTIC TROUBLESHOOTING
Gather information from customer
Is the basic brake system functioning
normallv?
(Refer to
Diagnostic trouble code
Inspection chart for trouble symptoms(Refer to Inspectionchart for diagnostic troubleII
codes (Refer to
cope malfunctions.)
NOTES WITH REGARD TO DIAGNOSIS
The condition listed in the following table are con sidered normal.
ConditionExplanation of condition
System check sound
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ABS operation soundSound of the motor inside the ABS hydraulic unit op erating (whine)2. Sound is generated along with vibration of the (scraping)
3.When ABS operates, sound is generated from the vehi cle chassis due to brake application and release.
(Thump: suspension; squeak: tires)
ABS operationFor road surfaces such as snow-covered roads and gravel roads, the braking distance for
(Long braking distance)vehicles with ABS can sometimes be longer than that for other Accordingly,
advise the customer to drive safely on such roads by lowering the vehicle speed
being overconfident.
. .
Diagnosis detection condition depends on the diagno stic trouble code.
Make sure that checking requirements listed in the “Comment” are satisfied when checking the trouble
symptom again after the diagnostic trouble code has been erased.

, , .
PROCEDURE 7
Break operation is
[Comment] o f w h e e l This depending on the driving conditions and the road surface conditions, so ‘ M a l f u n c t i o n _ _
problem diagnosis is difficult. However, if a normal diagnostic trouble code is displayed,l
carry out the following Malfunction of bearing. . .l of: .
W h e e l s p e e d -NG: Repair(Refer to
N G N G speed sensor check(Refer to GROUP -Wheel SpeedReplace the wheel speed sensor.
OKSensor Check.)
OK
Hydraulic unit check (Refer to N GABS rotor check (Refer to Replace the rotor.
OK
Wheel bearing end play check
Refer to GROUP 26 On-vehicle Repair
Refer to GROUP 27
On-vehide
Service.
Check trouble symptom.
N G
ABS-ECU connector Disconnect the connector and measure at the harness side.
Resistance value between termi-nals and
NG Repair
O K
The sensor harness and connector s h o u l d b e m o v e d w h i l e t h e s e
inspections are carried out.
the .
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SRS General
CONSTRUCTION DIAGRAM
VEHICLE IDENTIFI-CATION CODE
CHART PLATE
Air
module
SRS warning light
SRS-ECU(incorporated safing sensor
and analog sensor)
NOTEThis construction diagram displays the general view of the SRS components.
For details, refer to “Schematic” “Configuration Diagrams” and “Circuit Diagram”
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SRS
INSPECTION CHART FOR DIAGNOSTIC TROUBLE CODES
Code No.Diagnostic item
14Analog sensor system
Safing sensor system
Driver’s air bag module (squib) system
62
64, Front passenger’s air bag module (squib) system
65
SRS-ECU capacitor system
Connector lock system
35SRS-ECU (after deployment of the air bag) system
(A) power circuit system
(B) power circuit system
43SRS warning light circuit system Light does not illuminate
Light does off
44SRS light drive circuit system
45SRS-ECU non-volatile memory and A/D converter system’
Driver’s air bag module (squib ignition drive circuit) system
Front passenger’s air bag module (squib ignition dr ive circuit) system
NOTE
For diagnostic trouble codes marked with if the vehicle condition to normal,, the diagnostic
code will be automatically erased, and the SRS warn ing light will return to normal.
If the vehicle has a discharged battery it will store the diagnostic trouble codes 41 or 42. When thes e diagnostic
trouble codes are displayed, check the battery.
R e v i s i o n1

SRS Post-collision Diagnosis
2. Read (and write down) all displayed diagnostic trouble
codes. (Refer to
NOTE
If the battery power supply has’ been disconnected or
disrupted by the collision, the scan tool cannot communi-
cate with the SRS-ECU.
and, ‘if necessary, repair
the body wiring harness before proceeding further.
3.Read the service data (fault duration and times
the memory was erased) using the Scan
NOTE
lMaximum stored period: 9999 minutes (approximately
7 days)
lMaximum number of times to be 250
4.Erase the diagnostic trouble codes, then wait 5 sec onds
or more, read and write down all displayed diagnost ic
trouble codes. (Refer to
REPAIR PROCEDURE
WHEN AIR BAG DEPLOYS IN A COLLISION.
1. Replace the following parts with new ones. l SRS air bag control unit (SRS-ECU) (Refer
l Air bag modules (Refer to
2.Check the following parts, and replace if any malfu nctions
are present.
l Clock spring (Refer to
l Steering wheel, steering column and intermediate
joint
(1) Check wiring harness (built, into’ steering whe el)
and connectors for damage, and terminals for
deformation.
(2) install air bag module to check fit or alignment
with steering wheel,.
(3) Check steering wheel for noise, binds or difficult
operation and excessive free play.
3. Check harnesses for binding, connectors for dama ge,
poor connections, and terminals for deformation.
(Refer to
WHEN AIR BAG DOES NOT IN LOW-SPEED
COLLISION.
Check the SRS components.
If the SRS components are showing any visible damag e such
as dents, cracks, or deformation, replace them with new ones.
Concerning parts removed for inspection, replacemen t
new parts and cautionary points for working, to
appropriate COMPONENT SERVICE,
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