TOYOTA RAV4 2006 Service Repair Manual

EI–10ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM
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HINT:
• If the key is removed within 60 seconds in step 6,
the additional key code registration mode is
canceled.
• A brief outline of the procedures for key code
registration is shown above. For more detailed
information, refer to the intelligent tester screen's
instructions.
• When the engine immobiliser system is operating
normally and the key is pulled out, the security
indicator light blinks continuously.
• If the additional key code registration fails, code
2-1 is output by the security indicator light. Trying
to reregister a previously registered key causes
code 2-2 to be output when the key is inserted. If
the number of registered key codes exceeds the
limit, code 2-3 is output by the security indicator
light. The output details are shown in procedure
"B".
4. ERASURE OF KEY CODE (PROCEDURE "D")
HINT:
All key codes are erased except for the master key,
which is used for erasing the key codes. In order to use a
key whose code has been erased, a new key code must
be registered.
(a) Erasure of key code
Condition:
At least two key codes must be registered in the
transponder key ECU.
7. After 60 seconds, key is registered
HINT:
Security indicator light goes off
-OFF
8. Remove key and then push NEXT button
on testerBLINKING
9. Tester screen displays number of registered key
10. ENDProcedureTime
(Operation completion time)Security Indicator Light Condition
ProcedureTime
(Operation completion time)Security Indicator Light Condition
1. START -BLINKING
HINT:
Until first key is inserted
2. Insert previously registered master key into
ignition key cylinder, turn ignition switch to ON
position, and turn intelligent tester on
-OFF
3. Select following items on tester:
(1) IMMOBILISER
(2) ID UTILITY
(3) IMMOB CODE ERSOFF
4. Remove key and then push NEXT button
on tester. Immediately after above operation,
insert previously registered master key into
ignition key cylinder, turn ignition switch to ON
position, and then push NEXT button on
tester.Within 120 seconds BLINKING
ON for 1 second then OFF

ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEMEI–11
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HINT:
• To cancel erasure mode after the erasure
request is sent from the tester to the ECU, leave
the master key inserted until the timer times out.
• A brief outline of the procedures for key code
erasure is shown above. For more detailed
information, refer to the intelligent tester screen's
instructions.
• When the engine immobiliser system is operating
normally and the key is pulled out, the security
indicator light blinks continuously.
5. ECU - ECM COMMUNICATION ID REGISTRATION
(PROCEDURE "C")
NOTICE:
• The ECU communication ID should be registered
when the transponder key ECU and / or ECM is
replaced in order to match the ECU - ECM
communication ID.
• The engine cannot be started unless the ECU -
ECM communication ID matches.
• Do not disconnect the battery while the ECU -
ECM communication ID is being set.
• Do not turn the ignition switch from ON to OFF 20
times or more before setting the ECU - ECM
communication ID. If this operation is likely to be
performed 20 times or more, disconnect the
negative battery terminal cable in order to avoid
engine start disablement. Failure to do so will
result in the engine not starting unless the
transponder key ECU is replaced with a new one.
(a) After replacing the transponder key ECU
(1) Register the key code(s) by following the new
key code registration procedure (procedure
"B").
(2) Using SST, connect the TC and CG terminals
of the DLC3 before inserting the key into the
key cylinder.
SST 09843-18040
5. Remove master keyWithin 10 seconds
HINT:
After tester instructionBLINKING
6. ENDProcedureTime
(Operation completion time)Security Indicator Light Condition

EI–12ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM
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(3) Insert a previously registered key into the
ignition key cylinder, turn the ignition switch ON
(do not start the engine), and leave it as is for
30 minutes.
(4) Turn the ignition switch OFF and disconnect
terminals TC and CG.
(5) Start the engine.
(6) Check that the engine starts and stays on for
more then 3 seconds. The registration is
complete.
(b) After replacing the ECM.
(1) Register the ECU - ECM communication ID
(c) After replacing the transponder key ECU and ECM
(1) Register the key code(s) by following the new
key code registration procedure (procedure
"B").
(2) Register the ECU - ECM communication ID
B130075E01
Procedure Security Indicator Light Condition
1. Insert previously registered key into ignition key cylinder
OFF 2. Start engine
3. Check that engine starts and stays on for more than 3 seconds.
Registration is complete.
Procedure Security Indicator Light Condition
1. Insert previously registered key into ignition key cylinder
OFF 2. Start engine
3. Check that engine starts and stays on for more than 3 seconds.
Registration is complete.

ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEMEI–13
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PROBLEM SYMPTOMS TABLE
HINT:
• Use the table below to help determine the cause of the
problem symptom. The potential causes of the symptoms
are listed in order of probability in the "Suspected area"
column of the table. Check each symptom by checking the
suspected areas in the order they are listed. Replace parts
as necessary.
• Inspect the fuses and relays related to this system before
inspecting the suspected areas below.
Engine immobiliser system:
HINT:
*1: for Manual air conditioning system
*2: for Automatic air conditioning system
Symptom Suspected area See page
Engine does not start1. ECU power source circuitEI-41
2. SFI systemES-24
Security indicator light malfunction1. Clock sub-assembly*1EI-38
2. Heater control panel*2EI-38
3. Transponder key ECUEI-38

EI–14ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM
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TERMINALS OF ECU
1. CHECK TRANSPONDER KEY AMPLIFIER
(a) Disconnect the E5 amplifier connector.
(b) Measure the resistance of the wire harness side
connector.
If the result is not as specified, there may be a
malfunction in the wire harness.
(c) Reconnect the E5 amplifier connector.
(d) Measure the resistance and voltage of the
connector.
If the result is not as specified, there may be a
malfunction in the amplifier.
(e) Using an oscilloscope, check the waveform 1.
Waveform 1 (Reference):
B065593E16
Symbols (Terminal No.) Wiring Color Terminal Description ConditionSpecified Condition
AGND (E5-7) - Body
groundR - Body ground Ground Always Below 1
Symbols (Terminal No.) Wiring Color Terminal Description ConditionSpecified Condition
AGND (E5-7) - Body
groundR - Body ground Ground Always Below 1
VC5 (E5-1) - AGND (E5-7) B - R Power sourceNo key is in ignition key
cylinder Below 1 V
Key inserted 4.6 to 5.4 V
CODE (E5-4) - AGND (E5-
7)P - R Demodulated signal of key
code dataNo key is in ignition key
cylinderBelow 1 V
Key insertedPulse generation (see
waveform 1)
TXCT (E5-5) - AGND (E5-
7)G - R Key code output signalNo key is in ignition key
cylinderBelow 1 V
Key insertedPulse generation (see
waveform 2)
B069240E13
Item Content
Symbols (Terminal No.) CODE (E5-4) - AGND (E5-7)
Tool Setting 5 V/DIV., 20 msec./DIV.
Condition Key inserted

ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEMEI–15
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(f) Using an oscilloscope, check the waveform 2.
Waveform 2 (Reference):
2. CHECK TRANSPONDER KEY ECU
(a) Disconnect the E46 ECU connector.
(b) Measure the resistance and voltage of the wire
harness side connector.
If the result is not as specified, there may be a
malfunction on the wire harness side.
(c) Reconnect the E46 ECU connector.
(d) Measure the resistance and voltage of the
connector.
B069239E10
Item Content
Symbols (Terminal No.) TXCT (E5-5) - AGND (E5-7)
Tool Setting 5 V/DIV., 20 msec./DIV.
Condition Key inserted
B121962E04
Symbols (Terminal No.) Wiring Color Terminal Description ConditionSpecified Condition
GND (E46-16) - Body
groundW-B - Body ground Ground Always Below 1
+B (E46-1) - GND (E46-
16)R - W-B Battery Always 10 to 14 V
IG (E46-2) - GND (E46-
16)B - W-B Ignition switchIgnition switch OFF Below 1 V
Ignition switch ON 10 to 14 V
Symbols (Terminal No.) Wiring Color Terminal Description ConditionSpecified Condition
AGND (E46-5) - GND
(E46-16)R - W-B Amplifier ground circuit Always Below 1
EGND (E46-11) - GND
(E46-16)V - W-B ECM ground circuit Always Below 1
KSW (E46-3) - GND (E46-
16)L - W-B Unlock warning switchNo key is in ignition key
cylinder10 to 14 V
Key inserted Below 1 V
VC5 (E46-14) - AGND
(E46-5)B - R Power sourceNo key is in ignition key
cylinderBelow 1 V
Key inserted 4.6 to 5.4 V
TXCT (E46-4) - AGND
(E46-5)G - RTransponder key amplifier
communication signalNo key is in ignition key
cylinderBelow 1 V
Key insertedPulse generation (see
waveform 1)

EI–16ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM
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If the result is not as specified, there may be a
malfunction in the ECU.
(e) Using an oscilloscope, check the waveform 1.
Waveform 1 (Reference):
(f) Using an oscilloscope, check the waveform 2.
Waveform 2 (Reference):
(g) Using an oscilloscope, check the waveform 3.
Waveform 3 (Reference):
CODE (E46-15) - AGND
(E46-5)P - RTransponder key amplifier
communication signalNo key is in ignition key
cylinderBelow 1 V
Key insertedPulse generation (see
waveform 2)
EFIO (E46-13) - EGND
(E46-11)P - V ECM output signalIgnition switch OFF Below 1 V
Ignition switch ONPulse generation (see
waveform 3)
EFII (E46-12) - EGND
(E46-11)LG - V ECM input signalIgnition switch OFF Below 1 V
Ignition switch OFFPulse generation (see
waveform 3)
IND (E46-8)- GND (E46-
16)Y - W-BSecurity indicator light
signalEngine immobiliser
system SET3 to 5 V
Engine immobiliser
system UNSETBelow 1 V
D (E46-9) - GND (E46-16) W - W-BDiagnosis tester
communicationIgnition switch ON Pulse generation Symbols (Terminal No.) Wiring Color Terminal Description ConditionSpecified Condition
B069239E11
Item Content
Symbols (Terminal No.) TXCT (E46-4) - AGND (E46-5)
Tool Setting 5 V/DIV., 20 msec./DIV.
Condition Key inserted
B069240E14
Item Content
Symbols (Terminal No.) CODE (E46-15) - AGND (E46-5)
Tool Setting 5 V/DIV., 20 msec./DIV.
Condition Key inserted
B069241E07
Item Content
Symbols (Terminal No.) EFIO (E46-13) - EGND (E46-11)
Tool Setting 10 V/DIV., 500 msec./DIV.
Condition Ignition switch ON

ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEMEI–17
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(h) Using an oscilloscope, check the waveform 4.
Waveform 4 (Reference):
3. CHECK ECM
(a) Measure the resistance and voltage of the wire
harness side connector.
If the result is not as specified, there may be a
malfunction in the wire harness.
(b) Using an oscilloscope, check the waveform 1.
Waveform 1 (Reference):
B069242E09
Item Content
Symbols (Terminal No.) EFII (E46-12) - EGND (E46-11)
Tool Setting 10 V/DIV., 500 msec./DIV.
Condition Ignition switch ON
B116297E02
Symbols (Terminal No.) Wiring Color Terminal Description ConditionSpecified Condition
EOM (A9-9) - Body ground V - Body ground Ground Always Below 1
IMI (A9-11) - EOM (A9-9) P - VTransponder key ECU
input signalIgnition switch OFF Below 1 V
Ignition switch ONPulse generation (see
waveform 1)
IMO (A9-10) - EOM (A9-9) LG - VTransponder key ECU
output signalIgnition switch OFF Below 1 V
Ignition switch ONPulse generation (see
waveform 2)
B069241E08
Item Content
Symbols (Terminal No.) IMI (A9-11) - EOM (A9-9)
Tool Setting 10 V/DIV., 500 msec./DIV.
Condition Ignition switch ON

EI–18ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM
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(c) Using an oscilloscope, check the waveform 2.
Waveform 2 (Reference):
B069242E10
Item Content
Symbols (Terminal No.) IMO (A9-10) - EOM (A9-9)
Tool Setting 10 V/DIV., 500 msec./DIV.
Condition Ignition switch ON

ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEMEI–19
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DIAGNOSIS SYSTEM
1. DESCRIPTION
(a) Engine immobiliser system data and Diagnostic
Trouble Codes (DTCs) can be read through the
vehicle's Data Link Connector 3 (DLC3). In some
cases, a malfunction may be occurring in the engine
immobiliser system even though the security
indicator light is not illuminated. When the system
seems to be malfunctioning, use the intelligent
tester to check for malfunctions and perform repairs.
2. CHECK DLC3
The vehicle's ECU uses the ISO 15765-4 communication
protocol. The terminal arrangement of the DLC3
complies with SAE J1962 and matches the ISO 15765-4
format.
NOTICE:
*: Before measuring the resistance, leave the vehicle
as is for at least 1 minute and do not operate the
ignition switch, other switches or doors.
If the result is not as specified, the DLC3 may have a
malfunction. Repair or replace the harness and
connector.
H100769E16
Symbols (Terminal No.) Terminal Description Condition Specified Condition
SIL (7) - SG (5) Bus "+" line During transmission Pulse generation
CG (4) - Body ground Chassis ground Always Below 1
SG (5) - Body ground Signal ground Always Below 1
BAT (16) - Body ground Battery positive Always 11 to 14 V
CANH (6) - CANL (14) HIGH-level CAN bus line Ignition switch off*54 to 69
CANH (6) - Battery positive HIGH-level CAN bus line Ignition switch off* 1 k or higher
CANH (6) - CG (4) HIGH-level CAN bus line Ignition switch off* 1 k
or higher
CANL (14) - Battery positive LOW-level CAN bus line Ignition switch off* 1 M
or higher
CANL (14) - CG (4) LOW-level CAN bus line Ignition switch off* 1 M
or higher