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Toyota Prius 2010 Manual
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Toyota Prius 2010 Manual

Toyota Prius 2010 Manual

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Last Modified: 5-3-2010
Model Year: 2010
Title: HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM: P0AA6-526,P0AA6-611,P0AA6-612,P0AA6-
613,P0AA6-614: Hybrid Battery Voltage System Isolation Fault (2010 Prius)
P0AA6-
DTC
526
P0AA6-
DTC
611
P0AA6-
DTC
612
P0AA6-
DTC
613
P0AA6-
DTC
614
DESCRIPTION
The power management control ECU monitors the battery smart unit and detects insulation malfunctions in the high-
voltage system.
DTC
INF
NO.
CODE
Insulation resistance between the high-voltage circuit and
P0AA6
526(*1)
the body has decreased.
6.4 C
Model: Prius
Hybrid Battery Voltage System Isolation Fault
Hybrid Battery Voltage System Isolation Fault
Hybrid Battery Voltage System Isolation Fault
Hybrid Battery Voltage System Isolation Fault
Hybrid Battery Voltage System Isolation Fault
DTC DETECTION CONDITION
From: 200904
Doc ID: RM000000OMD01IX
TROUBLE AREA
Hybrid vehicle transaxle
assembly
Motor cable
Generator cable
Inverter with converter
assembly
Frame wire
No. 2 engine wire
Hybrid battery junction
block
Compressor with motor
assembly
HV battery
Battery smart unit

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Summary of Contents for Toyota Prius 2010

  • Page 1 Last Modified: 5-3-2010 6.4 C From: 200904 Model Year: 2010 Model: Prius Doc ID: RM000000OMD01IX Title: HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM: P0AA6-526,P0AA6-611,P0AA6-612,P0AA6- 613,P0AA6-614: Hybrid Battery Voltage System Isolation Fault (2010 Prius) P0AA6- Hybrid Battery Voltage System Isolation Fault P0AA6- Hybrid Battery Voltage System Isolation Fault P0AA6-...

  • Page 2: Wiring Diagram

    DTC DETECTION CONDITION TROUBLE AREA CODE Insulation resistance of the with motor compressor P0AA6 Compressor with motor assembly assembly has decreased. Hybrid battery junction Insulation resistance of the HV battery area has block P0AA6 decreased. Battery smart unit HV battery Hybrid vehicle transaxle assembly Motor cable...

  • Page 3: System Description

    SYSTEM DESCRIPTION HINT: If a decrease in insulation resistance cannot be confirmed using a megohmmeter, check the Short Wave Highest Val in the Data List. 1. Characteristics of Short Wave Highest Value (a) The Data List item Short Wave Highest Val and insulation resistance have the relationship shown in the table below.

  • Page 4: Inspection Procedure

    SHORT WAVE HIGHEST VALUE TROUBLE AREA Neither condition (*1) nor (*2) is met Since the insulation resistance is close to 0 Ω, there is and Short Wave Highest Val is a strong possibility of interference with a metal object. approximately 0 V Neither condition (*1) nor (*2) is met Since the insulation resistance is several hundred and Short Wave Highest Val is between 0...
  • Page 5 RESULT PROCEED TO P0AA6 only is output. P0AA6 and P0A1D (power management control ECU malfunction) are output. P0AA6 and P0AA7 (malfunction in the battery smart unit) are output. P0AA6 and P0A1F (battery ECU malfunction) are output. (e) Turn the power switch off. GO TO DTC CHART (P0AFC) GO TO DTC CHART (P0AA7) GO TO DTC CHART (P0A1D)
  • Page 6 CHECK HV BATTERY AREA CHECK HYBRID VEHICLE TRANSAXLE ASSEMBLY (MOTOR CABLE) CAUTION: Be sure to wear insulated gloves. (a) Turn the power switch off. (b) Check that the service plug grip is not installed. NOTICE: After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
  • Page 7 e1-3 (V) - Body ground and Power switch off 100 MΩ or higher shielded wire ground e1-2 (U) - Body ground and Power switch off 100 MΩ or higher shielded wire ground e1-1 (W) - Body ground and Power switch off 100 MΩ...
  • Page 8 Generator Cable Shielded Wire Ground CHECK GENERATOR CABLE CHECK NO. 2 ENGINE WIRE CAUTION: Be sure to wear insulated gloves. (a) Check that the service plug grip is not installed. NOTICE: After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
  • Page 9 (Air Conditioning Harness) Shielded Wire Ground CHECK NO. 2 ENGINE WIRE CHECK INVERTER WITH CONVERTER ASSEMBLY CAUTION: Be sure to wear insulated gloves. (a) Check that the service plug grip is not installed. NOTICE: After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
  • Page 10 REPLACE INVERTER WITH CONVERTER ASSEMBLY CHECK FRAME WIRE CAUTION: Be sure to wear insulated gloves. (a) Check that the service plug grip is not installed. NOTICE: After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
  • Page 11 NOTICE: After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction. (c) Disconnect connector j1 from the battery smart unit HINT: For the removal and installation procedures related to the battery smart unit connectors, (d) Using a megohmmeter set to 500 V, measure the resistance according to the value(s) in the table below.
  • Page 12 (c) Remove the inverter terminal cover from the inverter with converter assembly. HINT: Make sure that no foreign objects have entered or contaminated the inverter with converter assembly. (d) Disconnect the motor cable e1 and generator cable f1 from the inverter with converter assembly.
  • Page 13 (a) Turn the power switch off. (b) Check that the service plug grip is not installed. NOTICE: After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction. (c) Remove the inverter terminal cover from the inverter with converter assembly.
  • Page 14 CHECK MOTOR CABLE CHECK HYBRID VEHICLE TRANSAXLE ASSEMBLY (GENERATOR CABLE) CAUTION: Be sure to wear insulated gloves. (a) Check that the service plug grip is not installed. NOTICE: After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
  • Page 15 CAUTION: Be sure to wear insulated gloves. (a) Turn the power switch off. (b) Check that the service plug grip is not installed. NOTICE: After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
  • Page 16 (a) Check that the service plug grip is not installed. NOTICE: After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction. (b) Disconnect the No. 2 engine wire (air conditioning harness) E2 from the inverter with converter assembly.
  • Page 17 After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction. (b) Disconnect the No. 2 engine wire (air conditioning harness) E1 from the compressor with motor assembly. Text in Illustration Green Lock (c) Using a megohmmeter set to 500 V, measure the resistance...
  • Page 18 NOTICE: After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction. (b) Disconnect the frame wire T4 and T3 from the hybrid battery junction block. HINT: For the removal and installation procedures related to the frame wire, (c) Using a megohmmeter set to 500 V, measure the resistance...
  • Page 19 (b) Disconnect the high voltage cable connector of the HV battery h2 and k2 from the hybrid battery junction block. (c) Using a megohmmeter set to 500 V, measure the resistance according to the value(s) in the table below. NOTICE: Be sure to set the megohmmeter to 500 V when performing this test.
  • Page 20 (d) Using a megohmmeter set to 500 V, measure the resistance according to the value(s) in the table below. NOTICE: Be sure to set the megohmmeter to 500 V when performing this test. Using a setting higher than 500 V can result in damage to the component being inspected.
  • Page 21 TESTER CONNECTION SWITCH SPECIFIED CONDITION CONDITION f1-3 (V) - Body ground and Power switch off 100 MΩ or higher shielded wire ground f1-2 (U) - Body ground and Power switch off 100 MΩ or higher shielded wire ground f1-1 (W) - Body ground and Power switch off 100 MΩ...
  • Page 22 e1-1 (W) - Body ground and Power switch off 100 MΩ or higher shielded wire ground Text in Illustration Motor Cable Shielded Wire Ground REPLACE MOTOR CABLE CHECK GENERATOR CABLE CAUTION: Be sure to wear insulated gloves. (a) Check that the service plug grip is not installed. NOTICE: After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
  • Page 23 REPLACE GENERATOR CABLE REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY...