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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Dcm Operation History
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HINT:
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Brake Hold Standby Indicator Light Circuit
DESCRIPTION The brake hold standby indicator light turns on if brake hold control is possible when the following conditions required for operation standby are met and the brake hold switch (electric parking brake switch assembly) is pressed while the ignition switch on.
Conditions required for
