Toyota Camry (XV70): Terminals Of Ecu
TERMINALS OF ECU
CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY
|
*A | w/o Seat Heater System |
*B | w/ Seat Heater System |
|
*C | Dual Type Automatic Air Conditioning System |
*D | Single Type Automatic Air Conditioning System |
(a) Disconnect the K54 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 |
|---|---|---|---|
|
K54-2 (IG+) - K54-4 (GND) |
Power source (IG) |
Ignition switch ON |
11 to 14 V |
|
K54-2 (IG+) - K54-4 (GND) |
Power source (IG) |
Ignition switch off |
Below 1 V |
|
K54-4 (GND) - Body ground |
Ground | Always |
Below 1 Ω |
(c) Reconnect the K54 air conditioning amplifier 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 |
|---|---|---|---|
|
K54-5 (RDFG) - K54-4 (GND) |
Rear window defogger signal |
Ignition switch ON, rear window defogger switch off |
11 to 14 V |
|
K54-5 (RDFG) - K54-4 (GND) |
Rear window defogger signal |
Ignition switch ON, rear window defogger switch on |
Below 1 V |
|
K54-14 (LIN1) - K54-4 (GND) |
LIN communication line |
Ignition switch ON |
Pulse generation |
CHECK AIR CONDITIONING CONTROL ASSEMBLY
(a) Disconnect the K26 air conditioning control 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 |
|---|---|---|---|
|
K26-2 (IG+) - K26-6 (GND) |
Power source (IG) |
Ignition switch ON |
11 to 14 V |
|
K26-2 (IG+) - K26-6 (GND) |
Power source (IG) |
Ignition switch off |
Below 1 V |
|
K26-6 (GND) - Body ground |
Ground | Always |
Below 1 Ω |
(c) Reconnect the K26 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 |
|---|---|---|---|
|
K26-9 (LIN1) - K26-6 (GND) |
LIN communication line |
Ignition switch ON |
Pulse generation |
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(a) Disengage the clamp.
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(a) Secure the compressor assembly with magnetic clutch in a vise between aluminum plates.
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