DTC P0A78-505 Drive Motor "A" Inverter Performance |
DTC P0A78-506 Drive Motor "A" Inverter Performance |
DTC P0A78-806 Drive Motor "A" Inverter Performance |
DTC P0A78-808 Drive Motor "A" Inverter Performance |
DTC No. | INF Code | DTC Detection Condition | Trouble Area |
P0A78 | 505 | Motor inverter fail signal detection (overcurrent due to MG ECU malfunction) | Inverter with converter assembly |
P0A78 | 506 | Motor inverter fail signal detection (overcurrent due to hybrid vehicle transmission assembly malfunction) |
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P0A78 | 806 | Abnormal motor current value detection (MG ECU malfunction) |
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P0A78 | 808 | Abnormal motor current value detection (Hybrid vehicle transmission malfunction) |
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1.CHECK DTC OUTPUT (HV) |
Connect the intelligent tester to the DLC3.
Turn the power switch on (IG).
Select the following menu items: Powertrain / Hybrid Control / DTC.
Check if DTCs are output.
DTC No. | Relevant Diagnosis |
P0A1D (all INF codes) | Hybrid Powertrain Control Module |
P0A1A (all INF codes) | Generator Control Module |
P0A1B (all INF codes) | Drive Motor "A" Control Module |
P0A72 (all INF codes) | Generator Phase V Current |
P0A75 (all INF codes) | Generator Phase W Current |
P0A60 (all INF codes) | Drive Motor "A" Phase V Current |
P0A63 (all INF codes) | Drive Motor "A" Phase W Current |
P0A51-174 | Drive Motor "A" Current Sensor Circuit |
P0A4B-253 | Generator Position Sensor Circuit |
P0A4D-255 | Generator Position Sensor Circuit Low |
P0A4C-513 | Generator Position Sensor Circuit Range / Performance |
P0A3F-243 | Drive Motor "A" Position Sensor Circuit |
P0A41-245 | Drive Motor "A" Position Sensor Circuit Low |
P0A40-500 | Drive Motor "A" Position Sensor Circuit Range / Performance |
P0A78-266, 267, 523, 586 | Drive Motor "A" Inverter Performance |
P0A94-585, 587, 589, 590 | DC/DC Converter Performance |
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NO | |
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2.CHECK CONNECTOR CONNECTION CONDITION (INVERTER WITH CONVERTER ASSEMBLY CONNECTOR) |
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Check the connection of the low voltage connector of the inverter with converter assembly.
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OK | |
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3.CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - MOTOR RESOLVER) |
Turn the power switch off and remove the service plug grip (Click here).
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Disconnect connector A59 (LHD), A62 (RHD) from the inverter with converter assembly.
Turn the power switch on (IG).
Measure the voltage according to the value(s) in the table below.
Tester Connection | Specified Condition |
MRF (A59-33) - Body ground | Below 1 V |
MRFG (A59-22) - Body ground | Below 1 V |
MSN (A59-23) - Body ground | Below 1 V |
MSNG (A59-35) - Body ground | Below 1 V |
MCS (A59-24) - Body ground | Below 1 V |
MCSG (A59-34) - Body ground | Below 1 V |
Tester Connection | Specified Condition |
MRF (A62-33) - Body ground | Below 1 V |
MRFG (A62-22) - Body ground | Below 1 V |
MSN (A62-23) - Body ground | Below 1 V |
MSNG (A62-35) - Body ground | Below 1 V |
MCS (A62-24) - Body ground | Below 1 V |
MCSG (A62-34) - Body ground | Below 1 V |
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OK | |
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4.CHECK MOTOR RESOLVER |
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Turn the power switch off.
Measure the resistance according to the value(s) in the table below.
Tester Connection | Specified Condition |
MRF (A59-33) - MRFG (A59-22) | 6.0 to 12.0 Ω |
MSN (A59-23) - MSNG (A59-35) | 12.5 to 24.5 Ω |
MCS (A59-24) - MCSG (A59-34) | 12.5 to 24.5 Ω |
Tester Connection | Specified Condition |
MRF (A62-33) - MRFG (A62-22) | 6.0 to 12.0 Ω |
MSN (A62-23) - MSNG (A62-35) | 12.5 to 24.5 Ω |
MCS (A62-24) - MCSG (A62-34) | 12.5 to 24.5 Ω |
Measure the resistance according to the value(s) in the table below.
Tester Connection | Specified Condition |
MRF (A59-33) or MRFG (A59-22) - Body ground | 10 kΩ or more |
MSN (A59-23) or MSNG (A59-35) - Body ground | 10 kΩ or more |
MCS (A59-24) or MCSG (A59-34) - Body ground | 10 kΩ or more |
MRF (A59-33) - MCSG (A59-34) | 10 kΩ or more |
MRF (A59-33) - MCS (A59-24) | 10 kΩ or more |
MRF (A59-33) - MSNG (A59-35) | 10 kΩ or more |
MRF (A59-33) - MSN (A59-23) | 10 kΩ or more |
MRFG (A59-22) - MCSG (A59-34) | 10 kΩ or more |
MRFG (A59-22) - MCS (A59-24) | 10 kΩ or more |
MRFG (A59-22) - MSNG (A59-35) | 10 kΩ or more |
MRFG (A59-22) - MSN (A59-23) | 10 kΩ or more |
MCSG (A59-34) - MSNG (A59-35) | 10 kΩ or more |
MCSG (A59-34) - MSN (A59-23) | 10 kΩ or more |
MCS (A59-24) - MSNG (A59-35) | 10 kΩ or more |
MCS (A59-24) - MSN (A59-23) | 10 kΩ or more |
Tester Connection | Specified Condition |
MRF (A62-33) or MRFG (A62-22) - Body ground | 10 kΩ or more |
MSN (A62-23) or MSNG (A62-35) - Body ground | 10 kΩ or more |
MCS (A62-24) or MCSG (A62-34) - Body ground | 10 kΩ or more |
MRF (A62-33) - MCSG (A62-34) | 10 kΩ or more |
MRF (A62-33) - MCS (A62-24) | 10 kΩ or more |
MRF (A62-33) - MSNG (A62-35) | 10 kΩ or more |
MRF (A62-33) - MSN (A62-23) | 10 kΩ or more |
MRFG (A62-22) - MCSG (A62-34) | 10 kΩ or more |
MRFG (A62-22) - MCS (A62-24) | 10 kΩ or more |
MRFG (A62-22) - MSNG (A62-35) | 10 kΩ or more |
MRFG (A62-22) - MSN (A62-23) | 10 kΩ or more |
MCSG (A62-34) - MSNG (A62-35) | 10 kΩ or more |
MCSG (A62-34) - MSN (A62-23) | 10 kΩ or more |
MCS (A62-24) - MSNG (A62-35) | 10 kΩ or more |
MCS (A62-24) - MSN (A62-23) | 10 kΩ or more |
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NG | |
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5.CHECK CONNECTOR CONNECTION CONDITION (MOTOR RESOLVER CONNECTOR) |
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Check the connection of the motor resolver connector.
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OK | |
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6.CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - MOTOR RESOLVER) |
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Disconnect connector E82 from the motor resolver.
Measure the resistance according to the value(s) in the table below.
Tester Connection | Specified Condition |
MRF (A59-33) - MRF (E82-1) | Below 1 Ω |
MRFG (A59-22) - MRFG (E82-5) | Below 1 Ω |
MSN (A59-23) - MSN (E82-2) | Below 1 Ω |
MSNG (A59-35) - MSNG (E82-6) | Below 1 Ω |
MCS (A59-24) - MCS (E82-3) | Below 1 Ω |
MCSG (A59-34) - MCSG (E82-7) | Below 1 Ω |
Tester Connection | Specified Condition |
MRF (A62-33) - MRF (E82-1) | Below 1 Ω |
MRFG (A62-22) - MRFG (E82-5) | Below 1 Ω |
MSN (A62-23) - MSN (E82-2) | Below 1 Ω |
MSNG (A62-35) - MSNG (E82-6) | Below 1 Ω |
MCS (A62-24) - MCS (E82-3) | Below 1 Ω |
MCSG (A62-34) - MCSG (E82-7) | Below 1 Ω |
Tester Connection | Specified Condition |
MRF (A59-33) or MRF (E82-1) - Body ground | 10 kΩ or more |
MRFG (A59-22) or MRFG (E82-5) - Body ground | 10 kΩ or more |
MSN (A59-23) or MSN (E82-2) - Body ground | 10 kΩ or more |
MSNG (A59-35) or MSNG (E82-6) - Body ground | 10 kΩ or more |
MCS (A59-24) or MCS (E82-3) - Body ground | 10 kΩ or more |
MCSG (A59-34) or MCSG (E82-7) - Body ground | 10 kΩ or more |
MRF (A59-33) - MRFG (A59-22) | 10 kΩ or more |
MRF (A59-33) - MCSG (A59-34) | 10 kΩ or more |
MRF (A59-33) - MCS (A59-24) | 10 kΩ or more |
MRF (A59-33) - MSNG (A59-35) | 10 kΩ or more |
MRF (A59-33) - MSN (A59-23) | 10 kΩ or more |
MRFG (A59-22) - MCSG (A59-34) | 10 kΩ or more |
MRFG (A59-22) - MCS (A59-24) | 10 kΩ or more |
MRFG (A59-22) - MSNG (A59-35) | 10 kΩ or more |
MRFG (A59-22) - MSN (A59-23) | 10 kΩ or more |
MCSG (A59-34) - MRFG (A59-22) | 10 kΩ or more |
MCSG (A59-34) - MSNG (A59-35) | 10 kΩ or more |
MCSG (A59-34) - MCS (A59-24) | 10 kΩ or more |
MCS (A59-24) - MSNG (A59-35) | 10 kΩ or more |
MCS (A59-24) - MSN (A59-23) | 10 kΩ or more |
Tester Connection | Specified Condition |
MRF (A62-33) or MRF (E82-1) - Body ground | 10 kΩ or more |
MRFG (A62-22) or MRFG (E82-5) - Body ground | 10 kΩ or more |
MSN (A62-23) or MSN (E82-2) - Body ground | 10 kΩ or more |
MSNG (A62-35) or MSNG (E82-6) - Body ground | 10 kΩ or more |
MCS (A62-24) or MCS (E82-3) - Body ground | 10 kΩ or more |
MCSG (A62-34) or MCSG (E82-7) - Body ground | 10 kΩ or more |
MRF (A62-33) - MRFG (A62-22) | 10 kΩ or more |
MRF (A62-33) - MCSG (A62-34) | 10 kΩ or more |
MRF (A62-33) - MCS (A62-24) | 10 kΩ or more |
MRF (A62-33) - MSNG (A62-35) | 10 kΩ or more |
MRF (A62-33) - MSN (A62-23) | 10 kΩ or more |
MRFG (A62-22) - MCSG (A62-34) | 10 kΩ or more |
MRFG (A62-22) - MCS (A62-24) | 10 kΩ or more |
MRFG (A62-22) - MSNG (A62-35) | 10 kΩ or more |
MRFG (A62-22) - MSN (A62-23) | 10 kΩ or more |
MCSG (A62-34) - MRFG (A62-22) | 10 kΩ or more |
MCSG (A62-34) - MSNG (A62-35) | 10 kΩ or more |
MCSG (A62-34) - MCS (A62-24) | 10 kΩ or more |
MCS (A62-24) - MSNG (A62-35) | 10 kΩ or more |
MCS (A62-24) - MSN (A62-23) | 10 kΩ or more |
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OK | ||
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