TOYOTA CAMRY 2000 Service Repair Manual

S05335
TOYOTA hand±held tester
DLC3
DI1KG±04
N09214
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
DI±921
1156 Author: Date:
PRE±CHECK
1. DIAGNOSIS SYSTEM
(a) Description
ECM controls the function of immobiliser on this vehicle.
Data of the immobiliser or DTC can be read form DLC3 of
the vehicle. When a trouble occurs in immobiliser, MIL
does not light ON but DTC inspection is performed.
Therefore when there seems to be a trouble with immobi-
liser, use TOYOTA hand±held tester or SST to check and
troubleshoot it.
(b) DLC3 INSPECTION
The vehicle's ECM uses ISO 9141±2 for communication.
The terminal arrangement of DLC3 complies with
SAEJ1962 and matches the ISO 9141±2 format.
Tester connectionconditionSpecified condition
7 (Bus
Line) ± 5 (Signal ground)During communicationPulse generation
4 (chassis Ground) ± BodyAlways1 W or less
5 (Signal Ground) ± BodyAlways1 W or less
16 (B+) ± BodyAlways9 ± 14 V
HINT:
If your display shows ºUNABLE TO CONNECT TO VEHICLEº
when you have connected the cable of OBD ll scan tool or TOY-
OTA hand±held tester to DLC3, turned the ignition switch ON
and operated the scan tool, there is a problem on the vehicle
side or tool side.
(1) If communication is normal when the tool is con-
nected to another vehicle, inspect DLC3 on the orig-
inal vehicle.
(2) If communication is still impossible when the tool is
connected to another vehicle, the problem is prob-
ably in the tool itself, so consult the Service Depart-
ment listed in the tool's instruction manual.

F02201
DLC1
TE1E1
BR3904
Normal code
0.25 Sec. 0.25 Sec. DI±922
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
1157 Author: Date:
2. INSPECT DIAGNOSIS
(a) Check the DTC (Using TOYOTA hand±held tester)
(1) Prepare the OBD ll scan tool (complying with SAEJ
1978) or TOYOTA hand±held tester.
(2) Connect the OBD ll scan tool or TOYOTA hand±
held tester to DLC3 under the instrument panel low-
er pad.
(3) Turn the ignition switch ON and turn the OBD ll scan
tool or TOYOTA hand±held tester switch ON.
(4) Use the OBD ll scan tool or TOYOTA hand±held
tester to check the DTCs and freeze frame data;
note them down. (For operating instructions, see
the OBD ll scan tool's instruction book.)
(5) See page DI±924 to confirm the details of the DTCs.
(b) Check the DTC (Using diagnosis check wire)
(1) Turn ignition switch ON.
(2) Using SST, connect between terminals 8 (TE1) and
3 (E1) of DLC1.
SST 09843±18040
(3) Read the diagnostic trouble code from malfunction
indicator lamp.
HINT:

If a diagnostic trouble code is not output, check the Tc ter-
minal circuit .

ECM controls the immobiliser function on this vehicle,
DTC is out put with DTC of engine.
As an example, the blinking patterns for codes; normal, 12 and
99 are as shown in the illustration.

I02680
Malfunction Code (Example Code 12, 99)
0.5 Sec. 0.5 Sec.
1.5 Sec. 2.5 Sec.
One Cycle4.5 Sec.
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
DI±923
1158 Author: Date:
(4) When DTC º99º is output, there is a trouble with
immobiliser. Start troubleshooting referring to
PROBLEM SYMPTOM TABLE.
(5) After completing the check, disconnect terminals 13
(TC) and 4 (CG) and turn OFF the display.
HINT:
In the event of 2 or more malfunction codes. indication will begin
from the smaller numbered code and continue in order to the
larger.
(c) Clear the DTC
The following procedures will erase the DTCs and freeze frame
data.
(1) Operating the OBD ll scam tool (complying with
SAEJ1978) or TOYOTA hand±held tester to erase
the codes. (See the OBD ll scan tool's instruction
book for operating instructions.)
(2) Disconnecting the battery terminals or EFI fuse.

DI1KH±03
DI±924
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
1159 Author: Date:
DIAGNOSTIC TROUBLE CODE CHART
DTC No.
(See page)Detection ItemTrouble Area
B2795
(DI±928)Unmatched key code
Key

Unregistered key inserted before
B2796
(DI±929)No communication in immobiliser system

Key

Transponder key coil

Amplifier

Wirehaness

ECM
B2797
(DI±932)Communication malfunction No.1
Communication contests

Unregistered key inserted before
B2798
(DI±935)Communication malfunction No.2

Key

Transponder key coil

Amplifier

Wirehaness

ECM
HINT:
To reduce the unnecessary exchange of ECM, check that a trouble occurs with the original ECM at the time
of exchanging ECM and the trouble will disappear with a new ECM.

DI1KI±04
I02682
Engine Room J/B No.2
EFI Fuse
Transponder Key Amplifier
Transponder Key Coil
ECM
IGN Fuse Instrument Panel J/B
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
DI±925
1160 Author: Date:
PARTS LOCATION

DI1KJ±04
D01054
E7 E8E10
E11 E9 DI±926
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
1161 Author: Date:
TERMINALS OF ECM
5S±FE engine:
Symbols (Terminals No.)Wiring ColorConditionSTD Voltage (V)
CODE ± E1
(E10±8 e E9±24)G±W e BRIgnition Switch ON10 ± 14
TXCK ± E1
(E10±9 e E9±24)L±Y e BRIgnition Switch ON10 ± 14
RXCK ± E1
(E10±3 e E9±24)R±L e BRIgnition Switch ON10 ± 14
1MZ±FE engine:
Symbols (Terminals No.)Wiring ColorConditionSTD Voltage (V)
CODE ± E1
(E9±4 e E10±17)G±W e BRIgnition Switch ON10 ± 14
TXCK ± E1
(E9±10 e E10±17)L±Y e BRIgnition Switch ON10 ± 14
RXCK ± E1
(E9±5 e E10±17)R±L e BRIgnition Switch ON10 ± 14

DI1KK±03
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
DI±927
1162 Author: Date:
PROBLEM SYMPTOMS TABLE
SymptomSuspect AreaSee page
Immobiliser is not set.
(Engine starts with key codes other than the registered key code.)2. ECMIN±31
Engine does not start.
1. Key
2. Wire harness
3. Transponder key coil
4. Amplifier
5. ECM*1
IN±31
BE±128
IN±31
Security indicator is always ON.
1. Security indicator
2. Wire harness
3. ECM*2
IN±31
IN±31
Security indicator is always ON.
(Although code has been registered in the automatic registration
mode, indicator is not OFF.)1. Wire harness
2. Transponder key coil
3. Amplifier
4. ECMIN±31
BE±128
IN±31
Security indicator is OFF
(When DTC of immobiliser is output)
1. Wire harness
2. Transponder key coil
3. Amplifier
4. ECMIN±31
BE±128
IN±31
Security indicator is OFF.
(When DTC of immobiliser is not output)1. Wire harness
2. ECMIN±31
IN±31
Security indicator is abnormally brinking.1. Wire harness
2. ECMIN±31
IN±31
*1 : Check that the key which did not start the engine has been registered and that it is possible to start with
other already registered key codes.
*2 : Finish the automatic registration mode because the mode might still remain.

DI1KN±02
DI±928
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
1163 Author: Date:
CIRCUIT INSPECTION
DTC B2795/99 Unmatched Key Code
This DTC is output when an unregistered key is inserted. When this DTC is output, delete DTC and insert
the key that a customer keeps to check that B2795 is output.
When a key that outputs B2795 is found, register this key. When B2795 is not output, there is a possibility
that the unregistered key has been inserted before. (ECM is normal.)
Inquire of a customer about the condition of using the system to find the cause of the trouble.
(Example: Another key has been inserted, etc.)

I08435
ECM
E10 28
93
E10
E10 3
4G±W
R±L
L±Y Transponder Key Amplifier
CODE
RXCK
TXCT 5S±FE engine:
G±W
R±L
L±Y 1
II4
4
II4
2
II4
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
DI±929
1164 Author: Date:
DTC B2796/99 No Communication in Immobiliser system
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
B2796/99No communication

Key

Transponder Key Coil

Transponder Key Amplifier

Wireharness

ECM
WIRING DIAGRAM
DI4FF±01

I03114
ECM
E9 24
105
E9
E9 3
4G±W
R±L
L±Y Transponder Key Amplifier
CODE
RXCK
TXCT 1MZ±FE engine: DI±930
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
1165 Author: Date: