TERMINALS OF ECU
CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY (for TMMT Made)
(a) Disconnect the F72 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.
Tester Connection |
Wiring Color |
Terminal Description |
Switch Condition |
Specified Condition |
---|---|---|---|---|
F72-5 (IG+) - F72-29 (GND) |
B - W-B |
Power source (IG) |
Ignition switch ON |
11 to 14 V |
Ignition switch off |
Below 1 V |
|||
F72-1 (B) - F72-29 (GND) |
V - W-B |
Battery power supply |
Always |
11 to 14 V |
F72-29 (GND) - Body ground |
W-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 F72 air conditioning amplifier assembly connector.
(d) Measure the voltage and check for pulses according to the value(s) in the table below.
Tester Connection |
Wiring Color |
Terminal Description |
Switch Condition |
Specified Condition |
---|---|---|---|---|
F72-26 (RDFG) - F72-29 (GND) |
P - W-B |
Rear window defogger signal |
Ignition switch ON, rear window defogger switch off |
11 to 14 V |
Ignition switch ON, rear window defogger switch on |
Below 1 V |
|||
F72-3 (LIN1) - F72-29 (GND) |
L - W-B |
LIN communication line |
Ignition switch ON |
Pulse generation |
If the result is not as specified, the air conditioning amplifier assembly may be malfunctioning.
CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY (for TMC Made)
(a) Disconnect the F139 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.
Tester Connection |
Wiring Color |
Terminal Description |
Switch Condition |
Specified Condition |
---|---|---|---|---|
F139-2 (IG+) - F139-4 (GND) |
B - W-B |
Power source (IG) |
Ignition switch ON |
11 to 14 V |
Ignition switch off |
Below 1 V |
|||
F139-1 (B) - F139-4 (GND) |
V - W-B |
Battery power supply |
Always |
11 to 14 V |
F139-4 (GND) - Body ground |
W-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 F139 air conditioning amplifier assembly connector.
(d) Measure the voltage and check for pulses according to the value(s) in the table below.
Tester Connection |
Wiring Color |
Terminal Description |
Switch Condition |
Specified Condition |
---|---|---|---|---|
F139-5 (RDFG) - F139-4 (GND) |
P - W-B |
Rear window defogger signal |
Ignition switch ON, rear window defogger switch off |
11 to 14 V |
Ignition switch ON, rear window defogger switch on |
Below 1 V |
|||
F139-14 (LIN1) - F139-4 (GND) |
BE - W-B |
LIN communication line |
Ignition switch ON |
Pulse generation |
If the result is not as specified, the air conditioning amplifier assembly may be malfunctioning.
CHECK AIR CONDITIONING CONTROL ASSEMBLY
(a) Check for pulses according to the value(s) in the table below.
Tester Connection |
Wiring Color |
Terminal Description |
Switch Condition |
Specified Condition |
---|---|---|---|---|
F61-2 (LIN1) - F61-16 (GND) |
L - W-B*1 BE - W-B*2 |
LIN communication line |
Ignition switch ON |
Pulse generation |
If the result is not as specified, the air conditioning control assembly may be malfunctioning.
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