Toyota Corolla Cross: Terminals Of Ecu
TERMINALS OF ECU
CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY
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(a) Disconnect the I49 air conditioning amplifier 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 the connector disconnected.
|
Terminal No. (Symbol) | Terminal Description |
Condition | Specified Condition |
|---|---|---|---|
|
I49-6 (IG+) - I49-17 (GND) |
Power source (IG) | Ignition switch ON |
11 to 14 V |
|
Ignition switch off | Below 1 V | ||
|
I49-5 (B) - I49-17 (GND) |
Power source (Back-up) |
Always | 11 to 14 V |
|
I49-17 (GND) - Body ground |
Ground for main power supply |
Always | Below 1 Ω |
(c) Reconnect the I49 air conditioning amplifier assembly connector.
(d) Check for pulses according to the value(s) in the table below.
|
Terminal No. (Symbol) | Terminal Description |
Condition | Specified Condition |
|---|---|---|---|
|
I49-7 (LIN1) - I49-17 (GND) |
LIN communication line |
Ignition switch ON, front wiper deicer switch on |
Pulse generation |
(e) Measure the voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) | Terminal Description |
Condition | Specified Condition |
|---|---|---|---|
|
I49-22 (FDEF) - I49-17 (GND) |
Wiper Deicer signal | Ignition switch ON, front wiper deicer switch off |
11 to 14 V |
|
Ignition switch ON, front wiper deicer switch on |
Below 2.2 V |
CHECK AIR CONDITIONING CONTROL ASSEMBLY
(a) Disconnect the I37 air conditioning control assembly connector.
(b) Measure the voltage and resistance according to the value(s) in the table below.
|
Terminal No. (Symbol) | Terminal Description |
Condition | Specified Condition |
|---|---|---|---|
|
I37-9 (IG+) - I37-13 (GND) |
Power source (IG) | Ignition switch ON |
11 to 14 V |
|
Ignition switch off | Below 1 V | ||
|
I37-13 (GND) - Body ground |
Ground for air conditioning control assembly |
Always | Below 1 Ω |
(c) Reconnect the I37 air conditioning control assembly connector.
(d) Check for pulses according to the value(s) in the table below.
|
Terminal No. (Symbol) | Terminal Description |
Condition | Specified Condition |
|---|---|---|---|
|
I37-7 (LIN1) - I37-13 (GND) |
LIN communication line |
Ignition switch ON | Pulse generation |
(e) Measure the voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) | Terminal Description |
Condition | Specified Condition |
|---|---|---|---|
|
I37-3 (DFAC) - I37-13 (GND) |
Wiper Deicer signal | Ignition switch ON, front wiper deicer switch off |
Below 1 V |
|
Ignition switch ON, front wiper deicer switch on |
11 to 14 V | ||
|
I37-11 (IND) - I37-13 (GND) |
Front wiper deicer switch indicator signal |
Ignition switch ON, front wiper deicer switch off |
11 to 14 V |
|
Ignition switch ON, front wiper deicer switch on |
Below 1 V |
READ NEXT:
Data List / Active Test
DATA LIST / ACTIVE TEST ACTIVE TEST HINT:
Using the GTS to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional
Removal
REMOVAL CAUTION / NOTICE / HINT COMPONENTS (REMOVAL)
Procedure Part Name Code
1 COWL TOP VENTILATOR LOUVER SUB-ASSEMBLY
55708 -
- -
2 FORWARD RE
SEE MORE:
Installation
INSTALLATION CAUTION / NOTICE / HINT COMPONENTS (INSTALLATION)
Procedure Part Name Code
1 RADIATOR DRAIN COCK PLUG
16400B
- -
2 LOWER RADIATOR SUPPORT
16535 -
- -
3 RADIATOR SUPPORT CUSHION
16523A
Image from Camera for Parking Assist Monitor is Abnormal
DESCRIPTION
The display signal from the rear television camera assembly
is transmitted to the display.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Depending on the parts that are replaced or operations that are
performed during vehicle inspection or maintenance, calibration of other sy
