DESCRIPTION In this
circuit, the combination meter assembly receives engine coolant
temperature signals from the ECM via CAN communication. The combination
meter assembly displays an engine coolant temperature warning based on
the data received from the ECM. WIRING DIAGRAM
 CAUTION / NOTICE / HINT
NOTICE:
- When replacing the combination meter assembly, always replace it with a
new one. If a combination meter assembly which was installed to another
vehicle is used, the information stored in it will not match the
information from the vehicle and a DTC may be stored.
- Before replacing the ECM, refer to Registration.
Click here 
HINT: If there is an open or short in the engine coolant temperature sensor circuit, the ECM stores DTCs. Troubleshoot the SFI system.
Click here PROCEDURE
| 1. |
CHECK CAN COMMUNICATION SYSTEM | (a) Check if CAN communication system DTCs are output.
Click here
|
Result | Proceed to | |
DTCs are not output | A | |
DTCs are output | B |
| B |
 | GO TO CAN COMMUNICATION SYSTEM |
|
A |
 | |
| 2. |
CHECK FOR DTC (SFI SYSTEM) | (a) Check if SFI system DTCs are output. Powertrain > Engine > Trouble Codes
|
Result | Proceed to | |
DTCs are not output | A | |
DTCs are output | B |
| B |
| GO TO SFI SYSTEM |
|
A | |
| |
| 3. |
PERFORM ACTIVE TEST USING TECHSTREAM |
|
*a | Water Temperature Meter Operation (50C,122F) | |
*b | Water Temperature Meter Operation (60C,140F) | |
*c | Water Temperature Meter Operation (70C,158F) | |
*d | Water Temperature Meter Operation (80C,176F) | |
*e | Water Temperature Meter Operation (Middle) | |
*f | Water Temperature Meter Operation (110C,230F) | |
*g | Water Temperature Meter Operation (120C,248F) | |
*h | Water Temperature Meter Operation (127C,260F) |
(a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG).
(c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Combination Meter / Active Test.
(e) Perform the Active Test according to the display on the Techstream. Body Electrical > Combination Meter > Active Test
|
Tester Display | Measurement Item |
Control Range | Diagnostic Note | |
Water Temperature Meter Operation (50C,122F) |
Engine coolant temperature receiver gauge (50°C, 122°F) |
ON | - | |
Water Temperature Meter Operation (60C,140F) |
Engine coolant temperature receiver gauge (60°C, 140°F) |
ON | - | |
Water Temperature Meter Operation (70C,158F) |
Engine coolant temperature receiver gauge (70°C, 158°F) |
ON | - | |
Water Temperature Meter Operation (80C,176F) |
Engine coolant temperature receiver gauge (80°C, 176°F) |
ON | - | |
Water Temperature Meter Operation (Middle) |
Engine coolant temperature receiver gauge (Middle) |
ON | - | |
Water Temperature Meter Operation (110C,230F) |
Engine coolant temperature receiver gauge (110°C, 230°F) |
ON | - | |
Water Temperature Meter Operation (120C,248F) |
Engine coolant temperature receiver gauge (120°C, 248°F) |
ON | - | |
Water Temperature Meter Operation (127C,260F) |
Engine coolant temperature receiver gauge (127°C, 260°F) |
ON | - | Body Electrical > Combination Meter > Active Test
|
Tester Display | | Water Temperature Meter Operation (50C,122F) | Body Electrical > Combination Meter > Active Test
|
Tester Display | | Water Temperature Meter Operation (60C,140F) | Body Electrical > Combination Meter > Active Test
|
Tester Display | | Water Temperature Meter Operation (70C,158F) | Body Electrical > Combination Meter > Active Test
|
Tester Display | | Water Temperature Meter Operation (80C,176F) | Body Electrical > Combination Meter > Active Test
|
Tester Display | | Water Temperature Meter Operation (Middle) | Body Electrical > Combination Meter > Active Test
|
Tester Display | | Water Temperature Meter Operation (110C,230F) | Body Electrical > Combination Meter > Active Test
|
Tester Display | | Water Temperature Meter Operation (120C,248F) | Body Electrical > Combination Meter > Active Test
|
Tester Display | | Water Temperature Meter Operation (127C,260F) |
OK: Engine coolant temperature receiver gauge operation is normal.
| OK |
| REPLACE ECM |
| NG |
| REPLACE COMBINATION METER ASSEMBLY | |
