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Home >> Toyota >> 2021 >> Highlander Platinum, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 55 (Engine Control System (T24A-FTS) - Diagnostic Codes (07 Of 11)) >> SFI System >> DTC P0A14-12: Engine Mount "A" Control Circuit High Circuit Short to Battery [10/2022 - ] >> Description

DTC P0A14-12: Engine Mount "A" Control Circuit High Circuit Short to Battery [10/2022 - ]: Description

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GTY1105555Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
*A for 2WD models - -
*1 No. 1 Vacuum Switching Valve (for Active Control Engine Mount System) *2 Front Engine Mounting Insulator
*3 Rear Engine Mounting Insulator - -
GTY1104677Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
*A for AWD models - -
*1 No. 1 Vacuum Switching Valve (for Active Control Engine Mount System) *2 Front Engine Mounting Insulator

The active control engine mount system decreases engine vibration at a low engine speed using the No. 1 vacuum switching valve (for active control engine mount system). The No. 1 vacuum switching valve (for active control engine mount system) is controlled by a pulse signal transmitted to No. 1 the vacuum switching valve (for active control engine mount system) from the ECM. The frequency of this pulse signal is matched to the engine speed to decrease engine vibration.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Note
P0A14-12 Engine Mount "A" Control Circuit High Circuit Short to Battery Short in No. 1 vacuum switching valve (for active control engine mount system) circuit and power supply circuit (2 trip detection logic).
  • Short in No. 1 vacuum switching valve (for active control engine mount system) circuit
  • No. 1 Vacuum switching valve (for active control engine mount system)
  • ECM
Does not come on SAE Code: P0A16