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.
System Description
SYSTEM DESCRIPTION
1. GENERAL
(a) The air conditioning system has the following controls.
Control
Outline
Manual Control
The air conditioning amplifier assembly controls the damper positions
(air inlet c ...
Dtc Check / Clear
DTC CHECK / CLEAR
1. CHECK DTC
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Smart Key / Trouble Codes.
(e) Read the DTCs.
2. CLEAR DTC
(a) Conne ...