DESCRIPTION
In this circuit, the meter CPU receives engine coolant temperature signals from the ECM using the CAN communication system. The meter CPU displays the engine coolant temperature, which is calculated based on the data received from the ECM.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
HINT:
If there is an open or short in the engine coolant temperature sensor circuit,
the ECM stores the DTCs. Troubleshoot the SFI system (See page
).
PROCEDURE
1. |
CHECK CAN COMMUNICATION SYSTEM |
(a) Check if a CAN communication DTC is output (See page
).
Result |
Proceed to |
---|---|
CAN communication DTC is not output |
A |
CAN communication DTC is output |
B |
B | ![]() |
GO TO CAN COMMUNICATION SYSTEM |
|
2. |
PERFORM ACTIVE TEST USING TECHSTREAM (WATER TEMPERATURE METER OPERATION) |
(a) Operate the Techstream according to the display and select the Active Test
(See page ).
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
---|---|---|---|
Water Temperature Meter Operation |
Engine coolant temperature receiver gauge |
Low, Normal, High |
Confirm that the vehicle is stopped with the engine idling. |
OK:
Engine coolant temperature receiver gauge indication is normal.
NG | ![]() |
REPLACE COMBINATION METER ASSEMBLY |
|
3. |
READ VALUE USING TECHSTREAM (COOLANT TEMPERATURE) |
(a) Operate the Techstream according to the display and select the Data List
(See page ).
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
Coolant Temperature |
Engine coolant temperature/16 to 127°C (60.8 to 260.6°F) |
After warming up: 80 to 95°C (176 to 203°F) |
|
OK:
Engine coolant temperature value displayed on the Techstream is almost the same as the engine coolant temperature receiver gauge indication.
(b) Record the temperature displayed on the Techstream.
NG | ![]() |
REPLACE COMBINATION METER ASSEMBLY |
|
4. |
READ VALUE USING TECHSTREAM (COOLANT TEMP) |
(a) Operate the Techstream according to the display and select the Data List
(See page ).
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
Coolant Temp |
Engine coolant temperature/Min.: -40°C (-40°F), Max.: 215°C (419°F) |
After warming up: 80 to 100°C (176 to 212°F) |
|
OK:
Engine coolant temperature value displayed on the Techstream is almost the same as the previously recorded Techstream indication (Body Electrical / Combination Meter / Data List / Coolant Temperature).
OK | ![]() |
REPLACE COMBINATION METER ASSEMBLY |
NG | ![]() |
REPLACE ECM |
Lumbar Switch
Components
COMPONENTS
ILLUSTRATION
Inspection
INSPECTION
PROCEDURE
1. INSPECT LUMBAR SWITCH ASSEMBLY
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Switch ...
Crawl Switch
Components
COMPONENTS
ILLUSTRATION
Removal
REMOVAL
PROCEDURE
1. REMOVE DRIVE MONITOR SWITCH (CRAWL CONTROL SWITCH AND MULTI-TERRAIN SELECT
SWITCH)
(a) Detach the 4 claws and remove the drive monitor switch (CRAWL control
switch an ...