TERMINALS OF ECU
1. CHECK TRANSPONDER KEY AMPLIFIER
(a) Disconnect the D21 transponder key amplifier connector.
(b) Measure the resistance according to the value(s) in the table below.
HINT:
Measure the values on the wire harness side with connector disconnected.
Tester Connection |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
D21-7 (AGND) - Body ground |
W - Body ground |
Ground |
Always |
Below 1 Ω |
If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the D21 transponder key amplifier connector.
(d) Measure the voltage according to the value(s) in the table below.
Tester Connection |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
D21-1 (VC5) - D21-7 (AGND) |
R - W |
Power source |
No key in ignition key cylinder |
Below 1 V |
D21-1 (VC5) - D21-7 (AGND) |
R - W |
Power source |
Key in ignition key cylinder |
4.6 to 5.4 V |
D21-4 (CODE) - D21-7 (AGND) |
LG - W |
Demodulated signal of key code data |
No key in ignition key cylinder |
Below 1 V |
D21-4 (CODE) - D21-7 (AGND) |
LG - W |
Demodulated signal of key code data |
Key in ignition key cylinder |
Pulse generation (See waveform 1) |
D21-5 (TXCT) - D21-7 (AGND) |
BR - W |
Key code output signal |
No key in ignition key cylinder |
Below 1 V |
D21-5 (TXCT) - D21-7 (AGND) |
BR - W |
Key code output signal |
Key in ignition key cylinder |
Pulse generation (See waveform 2) |
If the result is not as specified, the transponder key amplifier may have a malfunction.
(e) Inspect using an oscilloscope.
(1) Waveform 1 (Reference)
Tester Connection |
D21-4 (CODE) - D21-7 (AGND) |
Tool Setting |
2 V/DIV., 20 ms./DIV. |
Condition |
Key is in ignition key cylinder |
(2) Waveform 2 (Reference)
Tester Connection |
D21-5 (TXCT) - D21-7 (AGND) |
Tool Setting |
2 V/DIV., 10 ms./DIV. |
Condition |
Key is in ignition key cylinder |
2. CHECK TRANSPONDER KEY ECU ASSEMBLY
(a) Disconnect the D22 transponder key ECU assembly connector.
(b) Measure the resistance and voltage according to the value(s) in the table below.
HINT:
Measure the values on the wire harness side with connector disconnected.
Tester Connection |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
D22-16 (GND) - Body ground |
B - Body ground |
Ground |
Always |
Below 1 Ω |
D22-1 (+B) - D22-16 (GND) |
G - B |
Battery |
Always |
11 to 14 V |
D22-2 (IG) - D22-16 (GND) |
R - B |
Ignition switch signal |
Ignition switch off |
Below 1 V |
D22-2 (IG) - D22-16 (GND) |
R - B |
Ignition switch signal |
Ignition switch ON |
11 to 14 V |
D22-3 (KSW) - D22-16 (GND) |
V - B |
Unlock warning switch signal |
No key in ignition key cylinder |
10 kΩ or higher |
D22-3 (KSW) - D22-16 (GND) |
V - B |
Unlock warning switch signal |
Key in ignition key cylinder |
Below 1 Ω |
If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the D22 transponder key ECU assembly connector.
(d) Measure the resistance and voltage according to the value(s) in the table below.
Tester Connection |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
D22-5 (AGND) - Body ground |
W - Body ground |
Ground |
Always |
Below 1 Ω |
D22-3 (KSW) - D22-16 (GND) |
V - B |
Unlock warning switch signal |
No key in ignition key cylinder |
11 to 14 V |
D22-3 (KSW) - D22-16 (GND) |
V - B |
Unlock warning switch signal |
Key in ignition key cylinder |
Below 1 V |
D22-14 (VC5) - D22-5 (AGND) |
R - W |
Power source |
No key in ignition key cylinder |
Below 1 V |
D22-14 (VC5) - D22-5 (AGND) |
R - W |
Power source |
Key in ignition key cylinder |
4.6 to 5.4 V |
D22-4 (TXCT) - D22-5 (AGND) |
BR - W |
Transponder key amplifier communication signal |
No key in ignition key cylinder |
Below 1 V |
D22-4 (TXCT) - D22-5 (AGND) |
BR - W |
Transponder key amplifier communication signal |
Key in ignition key cylinder |
Pulse generation (See waveform 1) |
D22-15 (CODE) - D22-5 (AGND) |
LG - W |
Transponder key amplifier communication signal |
No key in ignition key cylinder |
Below 1 V |
D22-15 (CODE) - D22-5 (AGND) |
LG - W |
Transponder key amplifier communication signal |
Key in ignition key cylinder |
Pulse generation (See waveform 2) |
D22-13 (EFIO) - D22-16 (GND) |
G - B |
ECM output signal |
Ignition switch off |
Below 1 V |
D22-13 (EFIO) - D22-16 (GND) |
G - B |
ECM output signal |
Ignition switch ON |
Pulse generation (See waveform 3) |
D22-12 (EFII) - D22-16 (GND) |
BR - B |
ECM input signal |
Ignition switch off |
11 to 14 V |
D22-12 (EFII) - D22-16 (GND) |
BR - B |
ECM input signal |
Within 3 seconds after starter operates and initial combustion occurs, or within 3seconds after ignition switch first turned on (IG) after battery disconnected and connected. |
Pulse generation (See waveform 4) |
D22-9 (D) - D22-16 (GND) |
L - B |
Diagnostic tester communication |
Without communication |
Below 1 V |
D22-9 (D) - D22-16 (GND) |
L - B |
Diagnostic tester communication |
During communication |
Pulse generation |
D22-7 (CTY) - D22-16 (GND) |
G - B |
Door courtesy signal |
Switch pushed |
11 to 14 V |
D22-7 (CTY) - D22-16 (GND) |
G - B |
Door courtesy signal |
Switch free |
Below 1 V |
D22-8 (IND) - D22-16 (GND) |
Y - B |
Security indicator signal |
Ignition switch off, security indicator light blinks |
Alternating between 11 to 14 V and below 1 V |
D22-8 (IND) - D22-16 (GND) |
Y - B |
Security indicator signal |
Ignition switch ON, security indicator light off |
Below 1 V |
If the result is not as specified, the transponder key ECU assembly may have a malfunction.
(e) Inspect using an oscilloscope.
(1) Waveform 1 (Reference)
Tester Connection |
D22-4 (TXCT) - D22-5 (AGND) |
Tool Setting |
2 V/DIV., 10 ms./DIV. |
Condition |
Key is in ignition key cylinder |
(2) Waveform 2 (Reference)
Tester Connection |
D22-15 (CODE) - D22-5 (AGND) |
Tool Setting |
2 V/DIV., 20 ms./DIV. |
Condition |
Key is in ignition key cylinder |
(3) Waveform 3 (Reference)
Tester Connection |
D22-13 (EFIO) - D22-16 (GND) |
Tool Setting |
2 V/DIV., 1 s./DIV. |
Condition |
Ignition switch ON |
(4) Waveform 4 (Reference)
Tester Connection |
D22-12 (EFII) - D22-16 (GND) |
Tool Setting |
5 V/DIV., 500 ms/DIV. |
Condition |
Within 3 seconds after starter operates and initial combustion occurs, or within 3seconds after ignition switch first turned on (IG) after battery disconnected and connected. |
3. CHECK ECM (for 2GR-FE)
(a) The values listed under "Specified Condition" are reference values. Because waterproof connectors are used for ECM, inspections cannot be performed with the connectors connected.
Tester Connection |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
B39-81 (E1) - Body ground |
W - Body ground |
Ground |
Always |
Below 1 Ω |
A41-29 (IMO) - B39-81 (E1) |
BR - W |
Transponder key ECU output signal |
Ignition switch off |
11 to 14 V |
A41-29 (IMO) - B39-81 (E1) |
BR - W |
Transponder key ECU output signal |
Within 3 seconds after starter operates and initial combustion occurs, or within 3seconds after ignition switch first turned on (IG) after battery disconnected and connected. |
Pulse generation (See waveform 1) |
A41-40 (IMI) - B39-81 (E1) |
G - W |
Transponder key ECU input signal |
Ignition switch off |
Below 1 V |
A41-40 (IMI) - B39-81 (E1) |
G - W |
Transponder key ECU input signal |
Ignition switch ON |
Pulse generation (See waveform 2) |
(b) Inspect using an oscilloscope.
(1) Waveform 1 (Reference)
Tester Connection |
A41-29 (IMO) - B39-81 (E1) |
Tool Setting |
5 V/DIV., 500 ms/DIV. |
Condition |
Within 3 seconds after starter operates and initial combustion occurs, or within 3seconds after ignition switch first turned on (IG) after battery disconnected and connected. |
(2) Waveform 2 (Reference)
Tester Connection |
A41-40 (IMI) - B39-81 (E1) |
Tool Setting |
2 V/DIV., 1 s./DIV. |
Condition |
Ignition switch ON |
4. CHECK ECM (for 1AR-FE)
(a) The values listed under "Specified Condition" are reference values. Because waterproof connectors are used for ECM, inspections cannot be performed with the connectors connected.
Tester Connection |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
B58-104 (E1) - Body ground |
BR - Body ground |
Ground |
Always |
Below 1 Ω |
A49-10 (IMO) - B58-104 (E1) |
BR - BR |
Certification ECU (smart key ECU assembly) output signal |
Ignition switch off |
11 to 14 V |
A49-10 (IMO) - B58-104 (E1) |
BR - BR |
Certification ECU (smart key ECU assembly) output signal |
Within 3 seconds after the starter operates and initial combustion occurs, or within 3 seconds after Ignition switch first turned on (IG) after battery disconnected and connected |
Pulse generation (See waveform 1) |
A49-11 (IMI) - B58-104 (E1) |
G - BR |
Certification ECU (smart key ECU assembly) input signal |
Ignition switch off |
11 to 14 V |
A49-11 (IMI) - B58-104 (E1) |
G - BR |
Certification ECU (smart key ECU assembly) input signal |
Ignition switch on (IG) |
Pulse generation (See waveform 2) |
(b) Inspect using an oscilloscope.
(1) Waveform 1 (Reference)
Tester Connection |
A49-10 (IMO) - B58-104 (E1) |
Tool Setting |
5 V/DIV., 500 ms/DIV. |
Condition |
Within 3 seconds after starter operates and initial combustion occurs, or within 3seconds after ignition switch first turned on (IG) after battery disconnected and connected. |
(2) Waveform 2 (Reference)
Tester Connection |
A49-11 (IMI) - B58-104 (E1) |
Tool Setting |
2 V/DIV., 1 s./DIV. |
Condition |
Ignition switch ON |
5. ACCESSORY METER ASSEMBLY
(a) Disconnect the F2 accessory meter assembly connector.
(b) Measure the voltage and resistance according to the value(s) in the table below.
HINT:
Measure the values on the wire harness side with connector disconnected.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
F2-1 (B) - Body ground |
P - Body ground |
Battery |
Always |
11 to 14 V |
F2-12 (E) - Body ground |
B - Body ground |
Ground |
Always |
Below 1 Ω |
If the result is not as specified, there may be a malfunction in the wire harness.
(c) Reconnect the F2 accessory meter assembly connector.
(d) Measure the voltage according to the value(s) in the table below.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
F2-14 (LP) - Body ground |
Y - Body ground |
Security indicator light signal |
Ignition switch ON, security indicator light off |
11 to 14 V |
F2-14 (LP) - Body ground |
Y - Body ground |
Security indicator light signal |
Ignition switch off, security indicator light blinks |
Alternating between 11 to 14 V and below 1 V |
If the result is not as specified, the accessory meter assembly may have a malfunction.
Disassembly
DISASSEMBLY
PROCEDURE
1. REMOVE HOOD TO RADIATOR SUPPORT SEAL
(a) Using a clip remover, disengage the 10 clips and remove the hood
to radiator support seal.
2. REMOVE HOOD INSULATOR
...
Registered Device cannot be Deleted
PROCEDURE
1.
DELETE OPERATION
(a) Check if a registered portable player can be deleted normally.
OK:
Registered portable player can be deleted normally.
OK
END
NG
PROCEED TO ...
Rear Door LH ECU Communication Stop (B2324)
DESCRIPTION
This DTC is stored when LIN communication between the power window regulator
motor assembly (for rear LH side) and main body ECU (driver side junction block
assembly) stops for more than 10 seconds.
DTC No.
DTC Detection ...