Toyota Corolla Cross: Engine Coolant Temperature Receiver Gauge Malfunction
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.*1
for Gasoline Model: Click here
.gif)
for HEV Model: Click here
- *1: w/ Smart Key System
- When replacing any of the following ECUs, update the ECU security key.
Click here
PROCEDURE
|
1. | CHECK CAN COMMUNICATION SYSTEM |
(a) Check if CAN communication system DTCs are output.
for Gasoline Model: Click here
for HEV Model: Click here
|
Result | Proceed to |
|---|---|
|
DTCs are not output | A |
|
DTCs are output | B |
| B |
.gif) | GO TO CAN COMMUNICATION SYSTEM for Gasoline Model: Click here for HEV Model: Click here
|
|
.gif)
| 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 for HEV Model: Click here for Gasoline Model: Click here
|
|
| 3. |
CHECK VEHICLE TYPE |
(a) Check vehicle condition.
|
Result | Proceed to |
|---|---|
|
for 4.2 Inch Display |
A |
| for 7 Inch Display |
B |
| B |
| GO TO STEP 5 |
|
| 4. |
PERFORM ACTIVE TEST USING GTS |
(a) Perform the Active Test according to the display on the GTS.
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 | See [Display 1] |
|
Water Temperature Meter Operation (60C,140F) |
Engine coolant temperature receiver gauge (60°C, 140°F) |
ON | See [Display 1] |
|
Water Temperature Meter Operation (70C,158F) |
Engine coolant temperature receiver gauge (70°C, 158°F) |
ON | See [Display 1] |
|
Water Temperature Meter Operation (80C,176F) |
Engine coolant temperature receiver gauge (80°C, 176°F) |
ON | See [Display 1] |
|
Water Temperature Meter Operation (Middle) |
Engine coolant temperature receiver gauge (Middle) |
ON | See [Display 1] |
|
Water Temperature Meter Operation (110C,230F) |
Engine coolant temperature receiver gauge (110°C, 230°F) |
ON | See [Display 1] |
|
Water Temperature Meter Operation (120C,248F) |
Engine coolant temperature receiver gauge (120°C, 248°F) |
ON | See [Display 1] |
|
Water Temperature Meter Operation (127C,260F) |
Engine coolant temperature receiver gauge (127°C, 260°F) |
ON | See [Display 1] |
HINT:
[Display 1]: Water Temperature Meter Operation- Refer to the following table for the specified engine coolant temperature receiver gauge position for each selected value:
.png)
*A
for 4.2 Inch Type Multi-information Display
|
Tester Display |
Engine Coolant Temperature Receiver Gauge Indication | |
|---|---|---|
|
for HEV Model | for Gasoline Model | |
|
Water Temperature Meter Operation (50C, 122F) |
Between 2 and 3 is indicated |
Between 1 and 2 is indicated |
|
Water Temperature Meter Operation (60C, 140F) |
Approximately 4 is indicated |
Between 2 and 3 is indicated |
|
Water Temperature Meter Operation (70C, 158F) |
Approximately 4 is indicated |
Between 3 and 4 is indicated |
|
Water Temperature Meter Operation (80C, 176F) |
Approximately 4 is indicated |
Approximately 4 is indicated |
|
Water Temperature Meter Operation (Middle) |
Approximately 4 is indicated |
Approximately 4 is indicated |
|
Water Temperature Meter Operation (110C, 230F) |
Between 5 and 6 is indicated |
Between 5 and 6 is indicated |
|
Water Temperature Meter Operation (120C, 248F) |
Approximately 7 is indicated |
Approximately 7 is indicated |
|
Water Temperature Meter Operation (127C, 260F) |
Approximately 8 is indicated |
Approximately 8 is indicated |
|
Tester Display |
|---|
| Water Temperature Meter Operation (50C,122F) |
|
Tester Display |
|---|
| Water Temperature Meter Operation (60C,140F) |
|
Tester Display |
|---|
| Water Temperature Meter Operation (70C,158F) |
|
Tester Display |
|---|
| Water Temperature Meter Operation (80C,176F) |
|
Tester Display |
|---|
| Water Temperature Meter Operation (Middle) |
|
Tester Display |
|---|
| Water Temperature Meter Operation (110C,230F) |
|
Tester Display |
|---|
| Water Temperature Meter Operation (120C,248F) |
|
Tester Display |
|---|
| Water Temperature Meter Operation (127C,260F) |
|
Result | Proceed to |
|---|---|
|
Active Test can be performed correctly |
A |
| Active Test cannot be performed correctly |
B |
| A |
| REPLACE ECM for HEV Model: Click here for Gasoline Model: Click here
|
| B |
| REPLACE COMBINATION METER ASSEMBLY |
| 5. |
PERFORM ACTIVE TEST USING GTS |
(a) Perform the Active Test according to the display on the GTS.
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 | See [Display 1] |
|
Water Temperature Meter Operation (60C,140F) |
Engine coolant temperature receiver gauge (60°C, 140°F) |
ON | See [Display 1] |
|
Water Temperature Meter Operation (70C,158F) |
Engine coolant temperature receiver gauge (70°C, 158°F) |
ON | See [Display 1] |
|
Water Temperature Meter Operation (80C,176F) |
Engine coolant temperature receiver gauge (80°C, 176°F) |
ON | See [Display 1] |
|
Water Temperature Meter Operation (Middle) |
Engine coolant temperature receiver gauge (Middle) |
ON | See [Display 1] |
|
Water Temperature Meter Operation (110C,230F) |
Engine coolant temperature receiver gauge (110°C, 230°F) |
ON | See [Display 1] |
|
Water Temperature Meter Operation (120C,248F) |
Engine coolant temperature receiver gauge (120°C, 248°F) |
ON | See [Display 1] |
|
Water Temperature Meter Operation (127C,260F) |
Engine coolant temperature receiver gauge (127°C, 260°F) |
ON | See [Display 1] |
HINT:
[Display 1]: Water Temperature Meter Operation- Refer to the following table for the specified engine coolant temperature receiver gauge position for each selected value:
.png)
*A
for 7 Inch Type Multi-information Display
|
Tester Display |
Engine Coolant Temperature Receiver Gauge Indication | |
|---|---|---|
|
for HEV Model | for Gasoline Model | |
|
Water Temperature Meter Operation (50C, 122F) |
2nd segment illuminated |
1nd segment illuminated |
|
Water Temperature Meter Operation (60C, 140F) |
4th segment illuminated |
2nd segment illuminated |
|
Water Temperature Meter Operation (70C, 158F) |
4th segment illuminated |
3rd segment illuminated |
|
Water Temperature Meter Operation (80C, 176F) |
4th segment illuminated |
4th segment illuminated |
|
Water Temperature Meter Operation (Middle) |
4th segment illuminated |
4th segment illuminated |
|
Water Temperature Meter Operation (110C, 230F) |
5th segment illuminated |
5th segment illuminated |
|
Water Temperature Meter Operation (120C, 248F) |
8th segment illuminated |
8th segment illuminated |
|
Water Temperature Meter Operation (127C, 260F) |
8th segment illuminated |
8th segment illuminated |
|
Tester Display |
|---|
| Water Temperature Meter Operation (50C,122F) |
|
Tester Display |
|---|
| Water Temperature Meter Operation (60C,140F) |
|
Tester Display |
|---|
| Water Temperature Meter Operation (70C,158F) |
|
Tester Display |
|---|
| Water Temperature Meter Operation (80C,176F) |
|
Tester Display |
|---|
| Water Temperature Meter Operation (Middle) |
|
Tester Display |
|---|
| Water Temperature Meter Operation (110C,230F) |
|
Tester Display |
|---|
| Water Temperature Meter Operation (120C,248F) |
|
Tester Display |
|---|
| Water Temperature Meter Operation (127C,260F) |
|
Result | Proceed to |
|---|---|
|
Active Test can be performed correctly |
A |
| Active Test cannot be performed correctly |
B |
| A |
| REPLACE ECM for HEV Model: Click here for Gasoline Model: Click here
|
| B |
| REPLACE COMBINATION METER ASSEMBLY |
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