Toyota Corolla Cross: Terminals Of Ecu
TERMINALS OF ECU
CHECK TRANSPONDER KEY ECU ASSEMBLY
(a) Disconnect the I67 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 the connector disconnected.
|
Terminal No. (Symbol) | Terminal Description |
Condition | Specified Condition |
Related Data List Item / DTC |
|---|---|---|---|---|
|
I67-4 (+B) - I67-12 (GND) |
Auxiliary battery power supply |
Always | 11 to 14 V |
+B |
|
I67-5 (KSW) - I67-12 (GND) |
Unlock warning switch signal |
No door control transmitter assembly in ignition key cylinder |
10 kΩ or higher |
|
| Door control transmitter assembly in ignition key cylinder |
Below 1 Ω | |||
|
I67-12 (GND) - Body ground |
Ground | Always |
Below 1 Ω | - |
(c) Reconnect the I67 transponder key ECU assembly connector.
(d) Measure the voltage and check for pulses according to the value(s) in the table below.
|
Terminal No. (Symbol) | Terminal Description |
Condition | Specified Condition |
Related Data List Item / DTC |
|---|---|---|---|---|
|
I67-6 (IG) - I67-12 (GND) |
Ignition switch signal |
Ignition switch off | Below 1 V |
IG SW |
| Ignition switch ON |
11 to 14 V | |||
|
I67-8 (IND) - I67-12 (GND) |
Security indicator light signal |
No door control transmitter assembly in ignition key cylinder, or 20 sec. elapsed after turning ignition switch to ACC or off (immobiliser system set) |
Pulse generation |
Immobiliser |
|
Door control transmitter assembly in ignition key cylinder (immobiliser system unset) |
Below 1 V | |||
|
I67-9 (D) - I67-12 (GND) |
DLC3 communication | Without communication |
Below 1 V |
- |
| During communication |
Pulse generation | |||
|
I67-2 (ANT1) - I67-12 (GND) |
Transponder key amplifier power source |
No door control transmitter assembly in ignition key cylinder |
Below 1 V |
- |
| Within 3 seconds of inserting door control transmitter assembly into ignition key cylinder |
Pulse generation (See waveform 1) | |||
|
I67-3 (ANT2) - I67-12 (GND) |
Transponder key amplifier communication signal |
No door control transmitter assembly in ignition key cylinder |
Below 1 V |
- |
| Within 3 seconds of inserting door control transmitter assembly into ignition key cylinder |
Pulse generation (See waveform 2) | |||
|
I67-10 (EFII) - I67-12 (GND) |
ECM input signal | Ignition switch off |
11 to 14 V |
- |
| Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) auxiliary battery terminal |
Pulse generation (See waveform 3) | |||
|
I67-11 (EFIO) - I67-12 (GND) |
ECM output signal | Ignition switch off |
Below 1 V |
- |
| Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) auxiliary battery terminal |
Pulse generation (See waveform 4) |
(e) Using an oscilloscope, check the waveform.
(1) Waveform 1 (Reference)
|
Item | Content |
|---|---|
|
Tester Connection | I67-2 (ANT1) - I67-12 (GND) |
|
Tool Setting | 20 V/DIV., 2 s./DIV. |
|
Condition | Within 3 seconds of inserting door control transmitter assembly into ignition key cylinder |
(2) Waveform 2 (Reference)
|
Item | Content |
|---|---|
|
Tester Connection | I67-3 (ANT2) - I67-12 (GND) |
|
Tool Setting | 20 V/DIV., 2 s./DIV. |
|
Condition | Within 3 seconds of inserting door control transmitter assembly into ignition key cylinder |
(3) Waveform 3 (Reference)
|
*a | Approximately 160 ms. |
*b | Approximately 270 ms. |
|
Item | Content |
|---|---|
|
Tester Connection | I67-10 (EFII) - I67-12 (GND) |
|
Tool Setting | 2 V/DIV., 500 ms./DIV. |
|
Condition | Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) auxiliary battery terminal |
(4) Waveform 4 (Reference)
|
*a | Approximately 160 ms. |
*b | Approximately 270 ms. |
|
Item | Content |
|---|---|
|
Tester Connection | I67-11 (EFIO) - I67-12 (GND) |
|
Tool Setting | 2 V/DIV., 500 ms./DIV. |
|
Condition | Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) auxiliary battery terminal |
CHECK ECM
(a) Measure the voltage and check for pulses according to the value(s) in the table below.
|
Terminal No. (Symbol) | Terminal Description |
Condition | Specified Condition |
Related Data List Item / DTC |
|---|---|---|---|---|
|
A47-25 (IMO) - A47-10 (E1) |
Transponder key ECU assembly communication output |
Ignition switch off | 11 to 14 V |
- |
| Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) auxiliary battery terminal |
Pulse generation (See waveform 1) |
- | ||
|
A47-26 (IMI) - A47-10 (E1) |
Transponder key ECU assembly communication input |
Ignition switch off | Below 1 V |
- |
| Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) auxiliary battery terminal |
Pulse generation (See waveform 2) |
- |
(b) Using an oscilloscope, check the waveform.
(1) Waveform 1 (Reference)
|
*a | Approximately 160 ms. |
*b | Approximately 270 ms. |
|
Item | Content |
|---|---|
|
Tester Connection | A47-25 (IMO) - A47-10 (E1) |
|
Tool Setting | 2 V/DIV., 500 ms./DIV. |
|
Condition | Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) auxiliary battery terminal |
(2) Waveform 2 (Reference)
|
*a | Approximately 160 ms. |
*b | Approximately 270 ms. |
|
Item | Content |
|---|---|
|
Tester Connection | A47-26 (IMI) - A47-10 (E1) |
|
Tool Setting | 2 V/DIV., 500 ms./DIV. |
|
Condition | Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) auxiliary battery terminal |
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