TOYOTA CAMRY 1999 Service Repair Manual

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:

± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
DI±931
1166 Author: Date:
INSPECTION PROCEDURE
1 Check transponder key coil (See page BE±128).
NG Replace transponder key coil.
OK
2 Check harness and connector between transponder key amplifier and ECM.
NG Repair or replace harness and connector.
OK
3 Does it operate normally after replacement of transponder key amplifier?
Yes Replace transponder key amplifier.
No
Replace ECM.

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 DI±932
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
1167 Author: Date:
DTC B2797/99 Communication Malfunction No.1
CIRCUIT DESCRIPTION
This code is detected when although the communication has been performed normally, an error occurs.
(Example. Some noise is inclueded in communication line.)
DTC No.DTC Detecting ConditionTrouble Area
B2797/99Communication error

Wire Harness

Transponder Key Amplifier

ECM
WIRING DIAGRAM
DI4FG±01

I03114
ECM
E9 24
105
E9
E9 3
4G±W
R±L
L±Y Transponder Key Amplifier
CODE
RXCK
TXCT 1MZ±FE engine:
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
DI±933
1168 Author: Date:

I02681
Noise
DI±934
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
1169 Author: Date:
INSPECTION PROCEDURE
1 Noise check
PREPARATION:
Insert already registered master key in the key cylinder.
CHECK:
Using an oscilloscope or TOYOTA hand±held tester, check that
noise is included in the CODE terminal of ECM.
OK:
No noise is detected.
NG Try to find the cause of the noise and remove it.
OK
2 Does it operate normally after replacement of transponder key amplifier?
Yes Replace transponder key amplifier.
No
Replace ECM.

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±935
1170 Author: Date:
DTC B2798/99 Communication malfunction No.2
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
B2798/99Communication error

Key

Transponder Key Coil

Transponder Key Amplifier

Wireharness

ECM
WIRING DIAGRAM
DI4FH±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±936
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
1171 Author: Date: