Toyota 4Runner: Terminals Of Ecu
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 power supply |
Ignition switch ON |
11 to 14 V |
|
F42-1 (IG+) - F42-14 (GND) |
L - W-B |
Ignition power supply |
Ignition switch off |
Below 1 V |
|
F42-14 (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.
(c) Reconnect the F42 air conditioning amplifier connectors.
(d) Measure the voltage and resistance according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
F42-40 (FDEF) - Body ground |
LG - Body ground |
Windshield deicer relay operation signal |
Ignition switch ON, outer mirror heater switch off |
11 to 14 V |
|
F42-40 (FDEF) - Body ground |
LG - Body ground |
Windshield deicer relay operation signal |
Ignition switch ON, outer mirror heater switch on |
Below 1 V |
|
F87-11 (FDF1) - Body ground |
P - Body ground |
Outer mirror heater switch indicator signal output |
Ignition switch ON, outer mirror heater switch off |
11 to 14 V |
|
F87-11 (FDF1) - Body ground |
P - Body ground |
Outer mirror heater switch indicator signal output |
Ignition switch ON, outer mirror heater switch on |
Below 1 V |
|
F87-5 (SW 1) - Body ground |
R - Body ground |
Outer mirror heater switch signal input |
Ignition switch ON, outer mirror heater switch off |
Below 1 V |
|
F87-5 (SW 1) - Body ground |
R - Body ground |
Outer mirror heater switch signal input |
Ignition switch ON, outer mirror heater switch on |
11 to 14 V |
- If the result is not as specified, the air conditioning amplifier assembly may have a malfunction.
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms.
If multiple suspected areas are listed, the potential causes of the symptoms
are lis ...
Windshield Glass
...
Other materials about Toyota 4Runner:
TC and CG Terminal Circuit
DESCRIPTION
DTC output mode is set by connecting terminals 13 (TC) and 4 (CG) of the DLC3.
The DTCs are output by the blinking of the tire pressure warning light.
WIRING DIAGRAM
HINT:
When each warning light blinks continuously, a ground short in the w ...
Reassembly
REASSEMBLY
PROCEDURE
1. INSTALL BRAKE BOOSTER PISTON SIB-ASSEMBLY
(a) Apply a light coat of lithium soap base glycol grease to a new piston.
(b) Install the piston.
NOTICE:
When installing, be careful ...
0.0273