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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 107 (Hybrid Control System (2WD) - Diagnostic Codes (4 Of 7)) >> HYBRID CONTROL SYSTEM (for 2WD) >> DTC P0AE4-11: Hybrid/EV Battery Precharge Contactor Circuit Short to Ground [12/2019 - 11/2023] >> Description

DTC P0AE4-11: Hybrid/EV Battery Precharge Contactor Circuit Short to Ground [12/2019 - 11/2023]: Description

WARNING: This page is about a different variant/trim than selected.

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

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

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
P0AE4-11 Hybrid/EV Battery Precharge Contactor Circuit Short to Ground Short to ground in the SMRP circuit:
Primary circuit of SMRP is malfunctioning.
(2 trip detection logic)
  • Wire harness or connector
  • HV battery junction block assembly
  • Hybrid vehicle control ECU
 Does not come on Master Warning:
Comes on
RELATED DATA LIST

DTC No. Data List
P0AE4-11
  • VL-Voltage before Boosting
  • VH-Voltage after Boosting
  • Hybrid Battery Voltage
  • SMRP Status
  • SMRB Status
  • SMRG Status
  • SMRP Control Status
  • SMRB Control Status
  • SMRG Control Status
  • Boosting Converter Shutdown Status
  • Generator Inverter Shutdown Status
  • Motor Inverter Shutdown Status
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