Lexus ES: Hybrid/EV Powertrain Control Module Monitoring Processor Unexpected Operation (P060A94)
DTC SUMMARY
MALFUNCTION DESCRIPTION
The main CPU and sub CPU of the hybrid vehicle control ECU monitor their internal operation and each other for malfunctions.
The cause of this malfunction may be the following:
- Hybrid vehicle control ECU malfunction
- Discrepancy between motor resolver signal and actual vehicle speed
DESCRIPTION
The hybrid vehicle control ECU monitors its internal operation and will store these DTCs when it detects an internal malfunction.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate |
|---|---|---|---|---|---|
| P060A94 | Hybrid/EV Powertrain Control Module Monitoring Processor Unexpected Operation |
(1 trip detection logic) | Hybrid vehicle control ECU | Comes on | Master Warning Light: Comes on |
MONITOR DESCRIPTION
The hybrid vehicle control ECU monitors its internal operation. If the internal operation is malfunctioning, the hybrid vehicle control ECU illuminates the MIL and stores a DTC.
MONITOR STRATEGY
| Related DTCs | P060A (INF P060A94): Internal control module monitoring processor performance |
| Required sensors/components | Hybrid vehicle control ECU |
| Frequency of operation | Continuous |
| Duration | TMC's intellectual property |
| MIL operation | 1 driving cycle |
| Sequence of operation | None |
TYPICAL ENABLING CONDITIONS
| The monitor will run whenever the following DTCs are not stored | TMC's intellectual property |
| Other conditions belong to TMC's intellectual property | - |
TYPICAL MALFUNCTION THRESHOLDS
| TMC's intellectual property | - |
COMPONENT OPERATING RANGE
| Hybrid vehicle control ECU | DTC P060A (INF P060A94) is not detected |
CONFIRMATION DRIVING PATTERN
HINT:
-
After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
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-
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
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- Connect the Techstream to the DLC3.
- Turn the power switch on (IG) and turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the power switch off and wait for 2 minutes or more.
- Turn the power switch on (IG) and turn the Techstream on.
-
Turn the power switch on (READY) and wait for 10 seconds or more. [*1]
HINT:
[*1] : Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
- Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.
-
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.
PROCEDURE
| 1. | CHECK DTC OUTPUT (MOTOR GENERATOR) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Enter the following menus: Powertrain / Motor Generator / Trouble Codes.
(d) Check for DTCs.
Powertrain > Motor Generator > Trouble Codes| Result | Proceed to |
|---|---|
| No DTCs are output, or DTCs except the ones in the table below are also output. | A |
| Any of the following DTCs are also output. | B |
| Malfunction Content | Relevant DTC | |
|---|---|---|
| Sensor and actuator circuit malfunction | P0A3F16 | Drive Motor "A" Position Sensor Circuit Voltage Below Threshold |
| P0A3F21 | Drive Motor "A" Position Sensor Signal Amplitude < Minimum | |
| P0A3F22 | Drive Motor "A" Position Sensor Signal Amplitude < Maximum | |
HINT:
-
P060A94 may be output as a result of the malfunction indicated by the DTCs above.
- The chart above is listed in inspection order of priority.
- Check DTCs that are output at the same time by following the listed order. (The main cause of the malfunction can be determined without performing unnecessary inspections.)
(e) Turn the power switch off.
| B | .gif) | GO TO DTC CHART (MOTOR GENERATOR CONTROL SYSTEM) |
|
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| 2. | CHECK DTC OUTPUT (ABS/VSC/TRAC) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Enter the following menus: Chassis / ABS/VSC/TRAC / Trouble Codes.
(d) Check for DTCs.
Chassis > ABS/VSC/TRAC > Trouble Codes| Result | Proceed to |
|---|---|
| No DTCs are output, or DTCs except the ones in the table below are also output. | A |
| Any of the following DTCs are also output. | B |
| Relevant DTC | |
|---|---|
| C1401 | Malfunction in Front Speed Sensor RH Circuit |
| C1402 | Malfunction in Front Speed Sensor LH Circuit |
| C1405 | Open or Short in Front Speed Sensor RH Circuit |
| C1406 | Open or Short in Front Speed Sensor LH Circuit |
| C1413 | Front Speed Sensor RH Circuit Output |
| C1414 | Front Speed Sensor LH Circuit Output |
HINT:
-
P060A94 may be output as a result of the malfunction indicated by the DTCs above.
- The chart above is listed in inspection order of priority.
- Check DTCs that are output at the same time by following the listed order. (The main cause of the malfunction can be determined without performing unnecessary inspections.)
(e) Turn the power switch off.
| B | | GO TO DTC CHART (ELECTRONICALLY CONTROLLED BRAKE SYSTEM) |
|
| 3. | CHECK DTC OUTPUT (HYBRID CONTROL) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
(d) Check for DTCs.
Powertrain > Hybrid Control > Trouble Codes| Result | Proceed to |
|---|---|
| P060A94 only is output. | A |
| DTCs except P060A94 are output. | B |
(e) Turn the power switch off.
| B | | GO TO DTC CHART (HYBRID CONTROL SYSTEM) |
|
| 4. | CHECK FREEZE FRAME DATA (HYBRID CONTROL) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
(d) Read the freeze frame data of DTC P060A94.
Powertrain > Hybrid Control > Trouble Codes| Result | Proceed to |
|---|---|
| Vehicle was stopped ("FR Wheel Speed" and "FL Wheel Speed" are between 0 and 1.4 km/h (0 and 1 mph)) but "Vehicle Speed" was 3 km/h (2 mph) or more | A |
| Vehicle was stopped ("FR Wheel Speed" and "FL Wheel Speed" are between 0 and 1.4 km/h (0 and 1 mph)) and "Vehicle Speed" was less than 3 km/h (2 mph) | B |
(e) Turn the power switch off.
| A | | GO TO MOTOR RESOLVER CIRCUIT |
| B | | REPLACE HYBRID VEHICLE CONTROL ECU |
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