Toyota Corolla Cross: Tachometer Malfunction
DESCRIPTION
for HEV Model:- The combination meter assembly receives engine speed signals from the hybrid vehicle control ECU via CAN communication. The combination meter assembly displays the engine speed calculated based on the data received from the hybrid vehicle control ECU.
- The combination meter assembly receives engine speed signals from the ECM via CAN communication. The combination meter assembly displays the engine speed calculated based on the data received from the ECM.
WIRING DIAGRAM
for HEV Model:
for Gasoline Model:
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.
- When replacing the combination meter assembly, update the ECU security key.
Click here
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- When replacing the hybrid vehicle control ECU, update the ECU security key.
Click here
- Before replacing the hybrid vehicle control ECU, refer to Registration.
Click here
- When replacing the ECM, update the ECU security key.
Click here
- Before replacing the ECM, refer to Registration.*1
Click here
- *1: w/ Smart Key System
PROCEDURE
|
1. | CONFIRM MODEL |
(a) Choose the model to be inspected.
|
Result | Proceed to |
|---|---|
|
for HEV Model | A |
|
for Gasoline Model | B |
| B |
.gif) | GO TO STEP 7 |
|
.gif)
| 2. |
CHECK CAN COMMUNICATION SYSTEM |
(a) Check if CAN communication DTCs are output.
Click here
|
Result | Proceed to |
|---|---|
|
DTCs are not output | A |
|
DTCs are output | B |
| B |
| GO TO CAN COMMUNICATION SYSTEM |
|
| 3. |
CHECK FOR DTC (HYBRID CONTROL SYSTEM) |
(a) Check if hybrid control system DTCs are output.
Powertrain > Hybrid Control > Trouble Codes|
Result | Proceed to |
|---|---|
|
DTCs are not output | A |
|
DTCs are output | B |
| B |
| GO TO HYBRID CONTROL SYSTEM |
|
| 4. |
CONFIRM MODEL |
(a) Choose the model to be inspected.
|
Result | Proceed to |
|---|---|
|
for 7 Inch Type Multi-information Display |
A |
| for 4.2 Inch Type Multi-information Display |
B |
| B |
| GO TO STEP 6 |
|
| 5. |
READ VALUE USING GTS |
(a) Read the Data List according to the display on the GTS.
Body Electrical > Combination Meter > Data List|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Engine RPM | Engine speed input |
Min.: 0 rpm, Max.: 12701 rpm or Unset |
Almost the same as actual tachometer |
The value displayed on the tachometer may deviate.* |
|
Tester Display |
|---|
| Engine RPM |
OK:
Engine speed displayed on the GTS is almost the same as the tachometer indication.
|
Result | Proceed to |
|---|---|
|
The value displayed in the Data List and on the tachometer approximately match |
A |
| The value displayed in the Data List and on the tachometer do not match |
B |
| A |
| REPLACE HYBRID VEHICLE CONTROL ECU |
| B |
| REPLACE COMBINATION METER ASSEMBLY |
| 6. |
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 |
|---|---|---|---|
|
TachoMeter Operation (0rpm) |
Tachometer (0 rpm) |
ON | - |
|
TachoMeter Operation (1000rpm) |
Tachometer (1000 rpm) |
ON | - |
|
TachoMeter Operation (2000rpm) |
Tachometer (2000 rpm) |
ON | - |
|
TachoMeter Operation (3000rpm) |
Tachometer (3000 rpm) |
ON | - |
|
TachoMeter Operation (4000rpm) |
Tachometer (4000 rpm) |
ON | - |
|
TachoMeter Operation (5000rpm) |
Tachometer (5000 rpm) |
ON | - |
|
TachoMeter Operation (6000rpm) |
Tachometer (6000 rpm) |
ON | - |
|
TachoMeter Operation (7000rpm) |
Tachometer (7000 rpm) |
ON | - |
|
TachoMeter Operation (8000rpm) |
Tachometer (8000 rpm) |
ON | - |
HINT:
Depending on the specifications of the vehicle, some items may not be displayed.
Body Electrical > Combination Meter > Active Test|
Tester Display |
|---|
| TachoMeter Operation (0rpm) |
|
Tester Display |
|---|
| TachoMeter Operation (1000rpm) |
|
Tester Display |
|---|
| TachoMeter Operation (2000rpm) |
|
Tester Display |
|---|
| TachoMeter Operation (3000rpm) |
|
Tester Display |
|---|
| TachoMeter Operation (4000rpm) |
|
Tester Display |
|---|
| TachoMeter Operation (5000rpm) |
|
Tester Display |
|---|
| TachoMeter Operation (6000rpm) |
|
Tester Display |
|---|
| TachoMeter Operation (7000rpm) |
|
Tester Display |
|---|
| TachoMeter Operation (8000rpm) |
OK:
Tachometer indication is normal.
| OK | | REPLACE HYBRID VEHICLE CONTROL ECU |
| NG | | REPLACE COMBINATION METER ASSEMBLY |
| 7. |
CHECK CAN COMMUNICATION SYSTEM |
(a) Check if CAN communication DTCs are output.
Click here
|
Result | Proceed to |
|---|---|
|
DTCs are not output | A |
|
DTCs are output | B |
| B |
| GO TO CAN COMMUNICATION SYSTEM |
|
| 8. |
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 |
|
| 9. |
CONFIRM MODEL |
(a) Choose the model to be inspected.
|
Result | Proceed to |
|---|---|
|
for 7 Inch Type Multi-information Display |
A |
| for 4.2 Inch Type Multi-information Display |
B |
| B |
| GO TO STEP 11 |
|
| 10. |
READ VALUE USING GTS |
(a) Read the Data List according to the display on the GTS.
Body Electrical > Combination Meter > Data List|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Engine RPM | Engine speed input |
Min.: 0 rpm, Max.: 12701 rpm or Unset |
Almost the same as actual tachometer |
The value displayed on the tachometer may deviate.* |
|
Tester Display |
|---|
| Engine RPM |
OK:
Engine speed displayed on the GTS is almost the same as the tachometer indication.
|
Result | Proceed to |
|---|---|
|
The value displayed in the Data List and on the tachometer approximately match |
A |
| The value displayed in the Data List and on the tachometer do not match |
B |
| A |
| REPLACE ECM |
| B |
| REPLACE COMBINATION METER ASSEMBLY |
| 11. |
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 |
|---|---|---|---|
|
TachoMeter Operation (0rpm) |
Tachometer (0 rpm) |
ON | - |
|
TachoMeter Operation (1000rpm) |
Tachometer (1000 rpm) |
ON | - |
|
TachoMeter Operation (2000rpm) |
Tachometer (2000 rpm) |
ON | - |
|
TachoMeter Operation (3000rpm) |
Tachometer (3000 rpm) |
ON | - |
|
TachoMeter Operation (4000rpm) |
Tachometer (4000 rpm) |
ON | - |
|
TachoMeter Operation (5000rpm) |
Tachometer (5000 rpm) |
ON | - |
|
TachoMeter Operation (6000rpm) |
Tachometer (6000 rpm) |
ON | - |
|
TachoMeter Operation (7000rpm) |
Tachometer (7000 rpm) |
ON | - |
|
TachoMeter Operation (8000rpm) |
Tachometer (8000 rpm) |
ON | - |
HINT:
Depending on the specifications of the vehicle, some items may not be displayed.
Body Electrical > Combination Meter > Active Test|
Tester Display |
|---|
| TachoMeter Operation (0rpm) |
|
Tester Display |
|---|
| TachoMeter Operation (1000rpm) |
|
Tester Display |
|---|
| TachoMeter Operation (2000rpm) |
|
Tester Display |
|---|
| TachoMeter Operation (3000rpm) |
|
Tester Display |
|---|
| TachoMeter Operation (4000rpm) |
|
Tester Display |
|---|
| TachoMeter Operation (5000rpm) |
|
Tester Display |
|---|
| TachoMeter Operation (6000rpm) |
|
Tester Display |
|---|
| TachoMeter Operation (7000rpm) |
|
Tester Display |
|---|
| TachoMeter Operation (8000rpm) |
OK:
Tachometer indication is normal.
| OK | | REPLACE ECM |
| NG | | REPLACE COMBINATION METER ASSEMBLY |
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