TERMINALS OF ECU
CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY
(a) Disconnect the J43 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) | Wiring Color | Terminal Description | Condition | Specified Condition |
---|---|---|---|---|
J43-2 (IG+) - Body ground | GR - Body ground | Air conditioning amplifier power supply | Engine switch off | Below 1 V |
J43-2 (IG+) - Body ground | GR - Body ground | Air conditioning amplifier power supply | Engine switch on (IG) | 11 to 14 V |
J43-4 (GND) - Body ground | W-B - Body ground | Air conditioning amplifier ground | Always | Below 1 Ω |
(c) Reconnect the J43 air conditioning amplifier assembly connector.
(d) Check for pulses according to the value(s) in the table below.
Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
---|---|---|---|---|
J43-24 (LOUT) - Body ground | GR - Body ground | Climate control blower control signal |
| Pulse generation (See waveform) |
J43-23 (ROUT) - Body ground | BE - Body ground | Climate control blower control signal |
| Pulse generation (See waveform) |
J43-14 (LIN1) - Body ground | G - Body ground | Refreshing seat switch signal | Engine switch on (IG) | Pulse generation |
(1) Waveform (Reference):
Item | Content |
---|---|
Tester Connection |
|
Tool Setting | 1 V/DIV., 1 ms/DIV. |
Vehicle Condition |
|
REFRESHING SEAT SWITCH (FOR FRONT SIDE)
(a) Disconnect the J82 refreshing seat switch (for front side) 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) | Wiring Color | Terminal Description | Condition | Specified Condition |
---|---|---|---|---|
J82-2 (IG) - Body ground | L - Body ground | Refreshing seat switch power (for front side) supply | Engine switch off | Below 1 V |
J82-2 (IG) - Body ground | L - Body ground | Refreshing seat switch power (for front side) supply | Engine switch on (IG) | 11 to 14 V |
J82-7 (E) - Body ground | W-B - Body ground | Refreshing seat switch (for front side) ground | Always | Below 1 Ω |
(c) Reconnect the J82 refreshing seat switch connector.
(d) Check for pulses according to the value(s) in the table below.
Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
---|---|---|---|---|
J82-4 (LIN1) - Body ground | G - Body ground | Refreshing seat switch (for front side) signal | Engine switch on (IG) | Pulse generation |
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