METER / GAUGE / DISPLAY METER / GAUGE SYSTEM(for SFTM Made) Engine Coolant Temperature 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 Service Bulletin.
- HINT:
-
If there is an open or short in the engine coolant temperature sensor circuit, the ECM stores DTCs. Troubleshoot the SFI system.
-
for M20D-FKS:
-
for A25F-FXS:
PROCEDURE
Check if CAN communication DTCs are output.
for HV Model:
for Gasoline Model:
- Result:
Result Proceed to CAN communication DTCs are not output. A CAN communication DTCs are output. B
A
B
for HV Model:
for Gasoline Model:
Check if SFI system DTCs are output.
for A25F-FXS:
for M20D-FKS:
- Powertrain > Engine > Trouble Codes
- 50001 372
- Result:
Proceed to OK NG
OK
NG
for A25F-FXS:
for M20D-FKS:
Check vehicle condition.
- Result:
Result Proceed to except 12.3 Inch Multi-information Display Type A for 12.3 Inch Multi-information Display Type B
A
B
Using the GTS, perform the Active Test.
- 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] Water Temperature Meter Operation (60C,140F) Engine coolant temperature receiver gauge 60°C (140°F) ON See [Display] Water Temperature Meter Operation (70C,158F) Engine coolant temperature receiver gauge 70°C (158°F) ON See [Display] Water Temperature Meter Operation (80C,176F) Engine coolant temperature receiver gauge 80°C (176°F) ON See [Display] Water Temperature Meter Operation (Middle) Engine coolant temperature receiver gauge (Middle) ON See [Display] Water Temperature Meter Operation (110C,230F) Engine coolant temperature receiver gauge 110°C (230°F) ON See [Display] Water Temperature Meter Operation (120C,248F) Engine coolant temperature receiver gauge 120°C (248°F) ON See [Display] Water Temperature Meter Operation (127C,260F) Engine coolant temperature receiver gauge 127°C (260°F) ON See [Display]
- Body Electrical > Combination Meter > Active Test
-
Tester Display Water Temperature Meter Operation (50C,122F) - 50004 409 236
- Body Electrical > Combination Meter > Active Test
-
Tester Display Water Temperature Meter Operation (60C,140F) - 50004 409 237
- Body Electrical > Combination Meter > Active Test
-
Tester Display Water Temperature Meter Operation (70C,158F) - 50004 409 238
- Body Electrical > Combination Meter > Active Test
-
Tester Display Water Temperature Meter Operation (80C,176F) - 50004 409 239
- Body Electrical > Combination Meter > Active Test
-
Tester Display Water Temperature Meter Operation (Middle) - 50004 409 240
- Body Electrical > Combination Meter > Active Test
-
Tester Display Water Temperature Meter Operation (110C,230F) - 50004 409 241
- Body Electrical > Combination Meter > Active Test
-
Tester Display Water Temperature Meter Operation (120C,248F) - 50004 409 242
- Body Electrical > Combination Meter > Active Test
-
Tester Display Water Temperature Meter Operation (127C,260F) - 50004 409 243
- OK:
Engine coolant temperature receiver gauge indication is normal.
| *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 | 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) |
[Display]: Engine coolant temperature receiver gauge
- Result:
Proceed to OK NG
OK
NG
Using the Techstream, read the Data List.
- Body Electrical > Combination Meter > Data List
-
Tester Display Measurement Item Range Normal Condition Diagnostic Note Coolant Temperature Engine coolant temperature Min.: 0°C (0°F), Max.: 127.5°C (261.5°F) 75 to 100°C (167 to 212°F): After warming up the engine -
- Body Electrical > Combination Meter > Data List
-
Tester Display Coolant Temperature - 50003 409 48
- Powertrain > Engine > Data List
-
Tester Display Measurement Item Range Normal Condition Diagnostic Note Coolant Temperature Engine coolant temperature Min.: -40°C (-40°F), Max.: 140°C (284°F) 75 to 100°C (167 to 212°F): After warming up This is the engine oil temperature.
- HINT:
- ·
After warming up the engine, the engine coolant temperature will be 75 to 100°C (167 to 212°F).
·After a long soak, the engine coolant temperature, intake air temperature and ambient air temperature will be approximately equal.
·If the value is -40°C (-40°F), or higher than 135°C (275°F), the sensor circuit is open or shorted.
·Check if the engine overheats if the value indicated is higher than 135°C (275°F).
- Powertrain > Engine > Data List
-
Tester Display Coolant Temperature - 50003 372 205
- HINT:
- ·
When the Data List values of the ECUs match, an internal malfunction of the ECM is suspected.
·When the Data List values of the ECUs do not match, a signal output error of the ECM or an internal malfunction of the combination meter assembly is suspected.
- OK:
The Data List values of the ECUs do not match.
- Result:
Proceed to OK NG
OK
for M20D-FKS:
for A25F-FXS:
NG