| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM100000001G70E |
| Model Year Start: 2020 | Model: Corolla | Prod Date Range: [01/2019 - 09/2022] |
| Title: METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM (for HV Model): Engine Coolant Temperature Receiver Gauge Malfunction; 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022] | ||
|
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.
PROCEDURE
|
1. |
CHECK CAN COMMUNICATION SYSTEM |
(a) Check if CAN communication system DTCs are output.
Click here
![2020 MY Corolla Corolla HV [01/2019 - 04/2020]; NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): DIAGNOSIS SYSTEM](/t3Portal/stylegraphics/info.gif)
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Result |
Proceed to |
|---|---|
|
DTCs are not output |
A |
|
DTCs are output |
B |
| B |
|
|
|
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
|
|
|
3. |
PERFORM ACTIVE TEST USING TECHSTREAM |
(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 |
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] |
-
[Display 1]: Water Temperature Meter Operation
*a
Engine Coolant Temperature Receiver Gauge
HINT:
Refer to the following table for the specified engine coolant temperature receiver gauge position for each selected value:
Tester Display
engine coolant temperature receiver gauge indication
Water Temperature Meter Operation
(50C, 122F)
Between 1 and 2 is indicated
Water Temperature Meter Operation
(60C, 140F)
Between 2 and 3 is indicated
Water Temperature Meter Operation
(70C, 158F)
Between 2 and 3 is indicated
Water Temperature Meter Operation
(80C, 176F)
Between 2 and 3 is indicated
Water Temperature Meter Operation
(Middle)
Approximately 3 is indicated
Water Temperature Meter Operation
(110C, 230F)
Between 4 and 5 is indicated
Water Temperature Meter Operation
(120C, 248F)
Approximately 6 is indicated
Water Temperature Meter Operation
(127C, 260F)
Approximately 7 is indicated
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 indication is normal.
| OK |
|
REPLACE ECM
|
| NG |
|
REPLACE COMBINATION METER ASSEMBLY
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