TERMINALS OF ECU
1. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY
(a) Disconnect the F42 air conditioning amplifier connector.
(b) Measure the voltage and resistance according to the value(s) in the table below.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
F42-21 (B) - F42-14 (GND) |
V - W-B |
Battery power source |
Always |
11 to 14 V |
F42-1 (IG+) - F42-14 (GND) |
L - W-B |
Ignition switch power supply |
Ignition switch ON |
11 to 14 V |
F42-1 (IG+) - F42-14 (GND) |
L - W-B |
Ignition switch power supply |
Ignition switch off |
Below 1 V |
F42-14 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
(c) Reconnect the F42 air conditioning amplifier connector.
(d) Measure the voltage according to the value(s) in the table below.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
F42-38 (RDEF) - F42-14 (GND) |
P - W-B |
Rear defogger signal |
Ignition switch ON, rear window defogger switch off |
11 to 14 V |
F42-38 (RDEF) - F42-14 (GND) |
P - W-B |
Rear defogger signal |
Ignition switch ON, rear window defogger switch on |
Below 1 V |
2. CHECK HEATER CONTROL ASSEMBLY
(a) Disconnect the F29 heater control connector.
(b) Measure the resistance and voltage according to the value(s) in the table below.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
F29-4 (IG+) - F29-11 (GND) |
L - W-B |
Ignition switch power supply |
Ignition switch ON |
11 to 14 V |
F29-4 (IG+) - F29-11 (GND) |
L - W-B |
Ignition switch power supply |
Ignition switch off |
Below 1 V |
F29-11 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
If the result is not as specified, there may be a malfunction on the wire harness side.
Light Sensor Circuit Malfunction (B1244)
DESCRIPTION
The automatic light control sensor detects ambient light, converts it into an
electrical signal, and outputs it to the main body ECU. The main body ECU turns
on or off the headlights and taillights according to the signal.
DTC Code ...
Auto Up / Down Function does not Operate
DESCRIPTION
If the auto up/down function does not operate, the cause may be one or more of
the following:
The ECU in the back door power window regulator motor determines that
the back door power window regulator motor has not been initialized.
...