Lexus SC300 / Lexus SC400. Manual — part 789
(d) Wrap the remaining part of sleeve with half of the tape
overlapping at each turn.
(e) Firmly wrap the tape 2 times or more about 10 mm (0.39 in.)
from the other end of the pressure–contact sleeve, then wrap
the tape back towards the start again and firmly finish winding
the tape around the center of the sleeve.
(f)
Fix the corrugated tube to the wire using silicon tape.
(g) After
applying
the
silicon tape, apply vinyl tape on the
corrugated tube of repair wire side over to the corrugated
tube of vehicle wire harness side.
5. CONNECT NEGATIVE (–) TERMINAL CABLE TO
BATTERY
–
SUPPLEMENTAL RESTRAINT SYSTEM
WIRE HARNESS AND CONNECTOR
RS–51
– MEMO –
RS–52
–
SUPPLEMENTAL RESTRAINT SYSTEM
WIRE HARNESS AND CONNECTOR
TROUBLESHOOTING
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HOW TO PROCEED WITH
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TROUBLESHOOTING
RS–54
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CUSTOMER PROBLEM ANALYSIS
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CHECK SHEET
RS–58
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DIAGNOSIS INSPECTION
RS–59
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SYMPTION SIMULATION
RS–65
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DIAGNOSTIC TROUBLE CODE MATRIX
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CHART
RS–67
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PROBLEM SYMPTOM CHART
RS–67
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CIRCUIT INSPECTION
RS–68
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DTC (Normal)
RS–68
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DTC 11
RS–70
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DTC 12
RS–78
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DTC 13
RS–85
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DTC 14
RS–92
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DTC 15
RS–97
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DTC 22
RS–102
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DTC 31
RS–108
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DTC 53
RS–110
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DTC 54
RS–115
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SRS Warning Light System
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(Always Lit Up, when ignition switch
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is Lock position)
RS–119
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Tc Terminal Circuit
RS–121
–
SUPPLEMENTAL RESTRAINT SYSTEM
TROUBLESHOOTING
RS–53
HOW TO PROCEED WITH TROUBLESHOOTING
Malfunction symptoms of the supplemental restraint system are difficult to confirm, so the diagnostic
trouble codes become the most important source of information when troubleshooting. Perform trouble-
shooting of the supplemental restraint system in accordance with the following procedure:
HINT: Do not disconnect the battery negative (–) terminal cable until step
, Diagnostic Trouble Code
Check and Recording, has been completed.
CUSTOMER PROBLEM ANALYSIS
Using the CUSTOMER PROBLEM ANALYSIS CHECK SHEET (See page
customer in as much detail as possible about the problem.
WARNING LIGHT CHECK
Check the SRS warning light. If the light remains on, a malfunction is stored in the center airbag sensor,
assembly, so proceed to step
. If the SRS warning light is not on, a malfunction has occurred in the SRS
warning light circuit, so perform troubleshooting for 22.
HINT: 22 is recorded when a malfunction occurs in the SRS warning light system.
If an open malfunction occurs in the SRS warning light system, the SRS warning light does not light up,
so that until the malfunction is repaired, the diagnostic trouble codes (including 22) cannot be confirmed.
DIAGNOSTIC TROUBLE CODE CHECK AND RECORDING
Check the diagnostic trouble codes and make a note of any malfunction codes which are output. If a normal
code is output, an abnormality in the power source circuit may have occurred, so perform troubleshooting
for source voltage in step
.
If 22 is output, skip steps
and
and proceed to step
.
MALFUNCTION CODE CLEARANCE
Clear the malfunction code.
HINT: The malfunction code output in step
indicates that a malfunction has occurred in the circuit desig-
nated by the malfunction code, but does not indicate whether the malfunction is still occurring or whether
it was in the past.
Accordingly, it is necessary to find out the present condition of the malfunction occurrence by clearing the
malfunction code and performing the diagnostic code check again. If this operation is neglected and trou-
bleshooting is performed using only the malfunction code confirmed in step
, isolating the problem com-
ponent becomes difficult and invites mistaken diagnosis.
DIAGNOSTIC TROUBLE CODE CHECK AND RECORDING
SYMPTOM SIMULATION
After repeating ignition switch ON–OFF operation (ON: wait 20 secs, OFF: wait 20 secs.) 5 times, check
the diagnostic trouble codes. If any code is output, the malfunction is still occurring, so proceed to step
.
Bearing in mind that a malfunction code was registered in step
, provided that the normal code is present-
ly output, use the methods described in step
to simulate the malfunction.
RS–54
–
SUPPLEMENTAL RESTRAINT SYSTEM
TROUBLESHOOTING
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