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 | IG power supply | Engine switch on (IG) | 11 to 14 V |
J43-2 (IG+) - Body ground | GR - Body ground | IG power supply | Engine switch off | Below 1 V |
J43-4 (GND) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
J48-1 (GND2) - Body ground* | W-B - Body ground | Ground | Always | Below 1 Ω |
(c) Reconnect the J43 air conditioning amplifier assembly connector.
(d) Measure the voltage and check for pulse generation according to the value(s) in the table below.
Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
---|---|---|---|---|
J48-16 (SHP+) - J43-4 (GND) | Y - W-B | Refreshing seat switch volume signal |
| Below 1 V |
J48-15 (SHD+) - J43-4 (GND) | P - W-B | Refreshing seat switch volume signal |
| Below 1 V |
J43-14 (LIN1) - Body ground | G - Body ground | Refreshing seat switch signal | Engine switch on (IG) | Pulse generation |
CHECK REFRESHING SEAT SWITCH (FOR FRONT SIDE)
(a) Disconnect the J82 refreshing seat switch 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 | IG power supply | Engine switch on (IG) | 11 to 14 V |
J82-2 (IG) - Body ground | L- Body ground | IG power supply | Engine switch off | Below 1 V |
J82-7 (E) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
(c) Reconnect the J82 refreshing seat switch connector.
(d) Check for pulse 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 signal | Engine switch on (IG) | Pulse generation |
CHECK REFRESHING SEAT SWITCH (FOR REAR SIDE) (w/ Rear Seat Heater) (w/o Rear No. 2 Seat)
(a) Disconnect the J15 refreshing seat switch 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 |
---|---|---|---|---|
J15-1 (IG) - Body ground | LG - Body ground | IG power supply | Engine switch on (IG) | 11 to 14 V |
J15-1 (IG) - Body ground | LG - Body ground | IG power supply | Engine switch off | Below 1 V |
J15-5 (E) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
(c) Reconnect the J15 refreshing seat switch connector.
(d) Check for pulse according to the value(s) in the table below.
Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
---|---|---|---|---|
J15-3 (RLIN) - Body ground | R - Body ground | Refreshing seat switch signal | Engine switch on (IG) | Pulse generation |
CHECK REAR SEAT HEATER SWITCH (w/ Rear Seat Heater) (w/ Rear No. 2 Seat)
(a) Disconnect the V4 rear seat heater switch 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 |
---|---|---|---|---|
V4-1 (IG) - Body ground | LG - Body ground | IG power supply | Engine switch on (IG) | 11 to 14 V |
V4-1 (IG) - Body ground | LG - Body ground | IG power supply | Engine switch off | Below 1 V |
V4-5 (E) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
(c) Reconnect the V4 rear seat heater switch connector.
(d) Check for pulse according to the value(s) in the table below.
Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
---|---|---|---|---|
V4-3 (RLIN) - Body ground | R - Body ground | Rear seat heater switch signal | Engine switch on (IG) | Pulse generation |
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