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Home >> Toyota >> 2016 >> Highlander Hybrid Limited >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System (2GR-FXE) - Diagnostic Codes (3 Of 7) >> Hybrid Control System >> DTC P0AE6-225: Hybrid Battery Precharge Contactor Control Circuit Low [02/2014 - 11/2016] >> Description

DTC P0AE6-225: Hybrid Battery Precharge Contactor Control Circuit Low [02/2014 - 11/2016]: Description

The SMRs (System Main Relays) are the relays that connect or disconnect the high voltage power system in accordance with commands from the power management control ECU.

There are 3 SMRs and 1 system main resistor. SMRB, SMRP, SMRG, and the system main resistor are located in the hybrid battery junction block assembly in the HV battery.

To connect to the high voltage power system, the vehicle will first turn on SMRP and SMRB to charge the vehicle through the system main resistor. Then, SMRP will be turned off after SMRG is turned on. To shut off the high voltage power system, SMRB and SMRG are turned off.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P0AE6-225 Hybrid Battery Precharge Contactor Control Circuit Low Short to ground in the SMRP circuit:
Primary circuit of SMRP is malfunctioning.
(2 trip detection logic)
  • Wire harness or connector
  • Hybrid battery junction block assembly
  • Power management control ECU
 Does not come on Master Warning Light:
Comes on
RELATED DATA LIST

DTC No. Data List
P0AE6-225
  • VL-Voltage before Boosting
  • VH-Voltage after Boosting
  • Power Resource VB
  • SMRP Status
  • SMRB Status
  • SMRG Status
  • SMRP Control Status
  • SMRB Control Status
  • SMRG Control Status
  • Conv Shutdown
  • MG2 Inverter Shutdown
  • MG1 Inverter Shutdown
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