PROBLEM SYMPTOMS TABLE
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 listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Cooling Fan System|
Symptom |
Suspected Area |
See page |
|---|---|---|
|
Cooling fan does not operate |
Cooling fan motor |
|
|
No. 2 cooling fan motor |
|
|
|
FAN NO. 1 relay |
|
|
|
FAN NO. 2 relay |
|
|
|
FAN NO. 3 relay |
|
|
|
Cooling fan circuit |
|
|
|
ECM |
|
|
|
Cooling fan does not stop |
FAN NO. 1 relay |
|
|
FAN NO. 3 relay |
|
|
|
Cooling fan circuit (for short circuit) |
|
|
|
ECM |
|
|
|
Cooling fan speed does not change |
FAN NO. 2 relay |
|
|
Cooling fan circuit |
|
|
|
ECM |
|
System Diagram
Cooling Fan CircuitChecking Monitor Status
CHECKING MONITOR STATUS
The purpose of the monitor result (mode 06) is to allow access to the results
of on-board diagnostic monitoring tests of specific components/systems that are
not continuously monitored. Examples are catalysts and evaporative emissi ...
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. CHECK FOR FUEL PUMP OPERATION AND INSPECT FOR FUEL LEAK
(a) Check fuel pump operation.
(1) Connect the Techstream to the DLC3.
(2) Turn the ignition switch to ON and turn the Techstream on.
NOTICE:
Do not start the eng ...
Components
COMPONENTS
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
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