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
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 |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Terminals Of Ecu
TERMINALS OF ECU
1. CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND DRIVER SIDE JUNCTION
BLOCK ASSEMBLY
(a) Remove the main body ECU (multiplex network body ECU) from the driver side
junction block assembly (See page ).
(b) Measure the resistanc ...
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. CHECK AUTOMATIC LIGHT CONTROL SENSOR
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
Switch Condition
...