TOYOTA CAMRY 1999 Service Repair Manual

AB0117H01293H01295
Airbag Sensor Assembly
LOCK
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±309
INSPECTION PROCEDURE
Always lit up, when ignition switch is in LOCK position
1 Prepare for inspection. (See step 1 on page DI±305)
2 Does SRS warning light turn off?
PREPARATION:
(a) Turn ignition switch to LOCK.
(b) Disconnect negative (±) terminal cable from the battery,
and wait at least for 90 seconds.
(c) Disconnect the airbag sensor assembly connector.
(d) Connect negative (±) terminal cable to the battery.
CHECK:
Check operation of SRS warning light.
NO Check SRS warning light circuit or terminal AB
circuit of DLC1.
YES
Replace airbag sensor assembly.

N14677
Fuse
AB0119H01300
H01301
Airbag Sensor Assembly
ON
LA
(+)
(±)
DI±310
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
Does not light up, when ignition switch is turned to ACC or ON
1 Check ECU±B Fuse.
PREPARATION:
Remove ECU±B fuse.
CHECK:
Check continuity of ECU±B fuse.
OK:
Continuity
HINT:

Fuse may be burnt out even if it appears to be OK during
visual inspection.

If fuse is OK, install it.
NG Go to step 5.
OK
2 Prepare for inspection. (See step 1 on page DI±305)
3 Check SRS warning light circuit.
PREPARATION:
(a) Connect negative (±) terminal cable to the battery.
(b) Turn ignition switch to ACC or ON.
CHECK:
Measure the voltage LA terminal of the harness side connector
of the airbag sensor assembly.
OK:
Voltage: 10 ± 14 V
NG Check SRS warning light bulb or repair SRS
warning light circuit.
OK

H02755AB0119H10313H10308
ON P/T Squib (LH)
Front Airbag
Sensor (RH)Spiral
Cable
P/T Squib (RH) Front Airbag
Sensor (LH)
P Squib D SquibAirbag Sensor
Assembly
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±311
4 Does SRS warning light come on?
PREPARATION:
(a) Disconnect negative (±) terminal cable from the battery.
(b) Connect the airbag sensor assembly connector.
(c) Connect negative (±) terminal cable to the battery, and
wait at least for 2 seconds.
(d) Turn ignition switch to ACC or ON.
CHECK:
Check operation of SRS warning light.
NO Check terminal LA of airbag sensor assembly.
If normal, replace airbag sensor assembly.
YES
From the results of the above inspection, the malfunctioning part can now be considered normal.
To make sure of this, use simulation method to check.

DI±312
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
5 Is new ECU±B fuse burnt out again?
NO Using simulation method, reproduce malfunc-
tion symptoms. (See page IN±19)
YES
Check harness between ECU±B fuse and
SRS warning light.

H08301H10309
LG±R P±B
B
BJ2 Junction
ConnectorAirbag Sensor
Assembly
C519
Tc
11
LG±R 11
Tc
E1DLC1
3 BR
A
BR
ECEC BR A
Junction
Connector
6
J6B
J7 C
BR 3
E1Tc DLC2 LG±R
4
B IG3
IG3
BR
J20
Junction Connector
A A BR J20
Junction Connector
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±313
Tc Terminal Circuit
CIRCUIT DESCRIPTION
By connecting terminals Tc and E1 of the DLC1 the airbag sensor assembly is set in the DTC output mode.
The DTCs are displayed by blinking the SRS warning light.
WIRING DIAGRAM
DI1BQ±12

AB0117AB0118AB0119H10313H10315
LOCK ACC
ON
or
AB0118
R14305AB0119
H00030
ACCON
or
E1
Tc
(+) (±)
DI±314
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
INSPECTION PROCEDURE
If the DTC is not displayed, do the following troubleshooting.
1 Does SRS warning light up for approx. 6 seconds?
PREPARATION:
Check operation of the SRS warning light after ignition switch
is turned from LOCK position to ACC or ON position.
NO Check SRS warning light system.
(See page DI±223)
YES
2 Check voltage between terminals Tc and E1 of DLC1.
PREPARATION:
Turn ignition switch to ACC or ON.
CHECK:
Measure the voltage between terminals Tc and E1 of DLC1.
OK:
Voltage: 10 ± 14 V
OK Go to step 4.
NG

AB0118
R14304AB0119
H00031
ACCON
orTc
(+)
(±)
AB0117 AB0118 AB0119H01302H01303
LOCK
ACCON
or
Airbag Sensor Assembly
Tc
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±315
3 Check voltage between terminal Tc of DLC1 and body ground.
CHECK:
Measure the voltage between terminal Tc of DLC1 and body
ground.
OK:
Voltage: 10 ± 14 V
OK Check harness between terminal E1 of DLC1
and body ground.
NG
4 Check airbag sensor assembly.
PREPARATION:
(a) Turn ignition switch to LOCK.
(b) Disconnect negative (±) terminal cable from the battery,
and wait at least for 90 seconds.
(c) Disconnect the airbag sensor assembly connector.
(d) Insert service wire into terminal Tc from back side as
shown in the illustration.
(e) Connect the airbag sensor assembly connector with ser-
vice wire.
(f) Connect negative (±) terminal cable to the battery.
(g) Turn ignition switch to ACC or ON and wait at least for 20
seconds.
(h) Connect service wire of terminal Tc to body ground.
CHECK:
Check operation of SRS warning light.
OK:
SRS waning light comes on.
NOTICE:
Pay due attention to the terminal connecting position to
avoid a malfunction.
OK Check harness between the airbag sensor as-
sembly and DLC1.
NG
Replace airbag sensor assembly.

AB0119H01304H01305
LOCKAirbag Sensor Assembly
Tc
(+)
(±)
DI±316
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
If the DTC is displayed without a DTC check procedure, perform the following
troubleshooting.
1 Check resistance between terminal Tc of airbag sensor assembly and body
ground.
PREPARATION:
(a) Turn ignition switch to LOCK.
(b) Disconnect negative (±) terminal cable from the battery,
and wait at least for 90 seconds.
(c) Disconnect the airbag sensor assembly connector.
CHECK:
Check resistance between terminal Tc of the airbag sensor as-
sembly connector and body ground.
OK:
Resistance: 1 MW or Higher
NG Repair or replace harness or connector.
OK
Replace airbag sensor assembly.

DI08F±12
Customer Problem Analysis
Check and Clear DTC (Precheck)
Vehicle Brought to Workshop
Problem Symptom ConfirmationSymptom Simulation Symptom does not occur
DTC CheckNormal code
DTC Chart
Problem Symptoms Table
Circuit InspectionInput Signal Check
Parts Inspection
Identification of Problem
Repair
Confirmation Test
EndItems inside
are titles of pages in this
manual with the page number indicated in the
bottom portion. See the indicated pages
for detailed explanations. 1
2
34
5
6
7
89
10
Step 2, 5: Diagnostic steps permitting the use
of the TOYOTA hand±held tester or
TOYOTA break±out±box. P. DI±318
P. DI±319
P. DI±319
P. DI±324
P. IN±19
P. DI±328
P. DI±329
OKNG
Symptom occurs
Malfunction code
± DIAGNOSTICSCRUISE CONTROL SYSTEM
DI±317
387 Author: Date:
CRUISE CONTROL SYSTEM
HOW TO PROCEED WITH TROUBLESHOOTING
Troubleshoot in accordance with the procedure on the following page.

DI08G±09
CRUISE CONTROL SYSTEM Check Sheet
Inspector 's name:
Customer 's Name
Date VehicleRegistration No.
Registration Year
Frame No.
Odometer Reading / /km
Mile
Condition of
Problem Occurrence
Date of Problem
How Often does
Occurrence
Problem Occurs
Vehicle Speed when
Problem Occurred / /
Continuous Intermittent ( Times a day)
km
Mile Brought in
Auto cancel
occurs
Driving condition
 City driving  Freeway  Up hill  Down hill

After cancel occurred, did the driver activate cruise control
again?
 Yes  No
 Cancel does not
occur With brake ON
 Except D position shift  At 40 km/h (25 mph) or less
 When control SW turns to CANCEL position
 Cruise control
malfunction Slip to acceleration side
 Slip to deceleration side
 Hunting occurs
 O/D cut off does not occur
 O/D does not return
 Switch
malfunction SET  ACCEL  COAST  RESUME  CANCEL

 Remains ON  Does not light up  Blinking Symptoms
DTC Check1st Time2nd Time
 Normal Code  Malfunction Code (Code )
 Normal Code  Malfunction Code (Code ) DI±318
± DIAGNOSTICSCRUISE CONTROL SYSTEM
CUSTOMER PROBLEM ANALYSIS CHECK