Toyota 4Runner: Generator Signal Circuit
DESCRIPTION
When the engine is started, the generator assembly turns on and a voltage pulse signal is generated.
This signal is used by the air conditioning amplifier assembly.
The signal expressing the amount of output from the generator assembly is one element of PTC heater control.
WIRING DIAGRAM
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PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - GENERATOR) |
(a) Disconnect the F42 amplifier connector.
(b) Disconnect the C5 generator connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F42-25 (ALT) - C5-3 (M) |
Always |
Below 1 Ω |
|
F42-25 (ALT) - Body ground |
Always |
10 kΩ or higher |
| OK | .gif) |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
PTC Heater Circuit
DESCRIPTION
PTC heater relays are closed in accordance with signals from the air conditioning
amplifier assembly and power is supplied to the quick heater assembly installed
on the radiator heate ...
Other materials about Toyota 4Runner:
Reassembly
REASSEMBLY
CAUTION / NOTICE / HINT
NOTICE:
When installing the hood bulge protector, heat the hood bulge surface using a
heat light.
Standard:
Item
Temperature
Hood Bulge
20 to 30°C (68 to 86°F)
...
Installation
INSTALLATION
PROCEDURE
1. INSTALL FRONT PROPELLER SHAFT ASSEMBLY
(a) Align the matchmarks on the yoke and differential flange.
(b) Install the propeller shaft assembly with the 4 washers, 4 bolts and 4 nuts.
Torque:
88 N·m {899 kgf·cm, 65 ft·lbf}
(c ...
0.0076