EV SYSTEM DOES NOT START

id300300000800

Warning

<<High voltage>>

•  If the necessary measures are not taken before servicing an electric vehicle, it could cause electrical shock and result in serious injury or, in the worst case, death. Before servicing the electric vehicle, refer to [HIGH VOLTAGE SERVICE CAUTIONS] in the general information and implement the necessary measures. (See HIGH VOLTAGE SERVICE CAUTIONS.)

Outline

Malfunction symptom	EV system does not start
Description	•  The EV system does not start even though the power switch is operated. •  The power switch POWER indicator light does not turn on even when the main power is switched ON. •  READY is not displayed in the instrument cluster after the EV system starts.
Possible cause	EV system start conditions are not met: •  Power switch signal circuit malfunction (body control module (BCM) detects DTC) ―  Short to power supply in power switch signal circuit ―  Open circuit in power switch signal circuit •  Power switch malfunction •  The body control module (BCM) recognizes that the brake pedal is not depressed. ―  Brake switch malfunction ―  Malfunction in wiring harness between brake switch and body control module (BCM), or connectors •  Body control module (BCM) recognizes that steering lock is not released ―  Steering lock unit malfunction •  PCM and body control module (BCM) recognizes position other than P position ―  CAN communication error ―  Parking lock actuator malfunction ―  Selector lever malfunction •  Body control module (BCM) malfunction •  PCM cannot receive start request from body control module (BCM) ―  CAN communication error •  Fail-safe due to PCM, drive motor control module or BECM DTC detection ―  EV system malfunction ―  High voltage battery voltage decreased •  False recognition that charge connector is connected ―  Normal charge port connection detection circuit malfunction (battery charge control module detects DTC) ―  Quick charge port connection detection circuit (PCM detects DTC) •  High voltage battery charging (normal operation) Note •  If the high voltage contactor does not activate, DTC P0AE3:00 is detected. High voltage contactor cannot be driven: •  Discharged lead-acid battery (See DISCHARGED LEAD-ACID BATTERY.) •  Short circuit in power transistor of PTC internal high voltage circuit Power switch POWER indicator light false illumination: •  Power switch POWER indicator light control circuit malfunction ―  Short to power supply in power switch POWER indicator light control circuit •  Body control module (BCM) malfunction READY status incorrect display •  Instrument cluster cannot receive main power status signal ―  CAN communication malfunction •  Instrument cluster malfunction
System wiring diagram
Connector diagram

Diagnostic Procedure

Warning

<<High voltage>>

•  If necessary measures such as wearing the correct protective gear are not taken when inspecting or removing/installing the high voltage parts, it could cause electrical shock and result in serious injury or, in the worst case, death.

•  Before inspecting or removing/installing the high voltage parts, refer to [HIGH VOLTAGE SERVICE CAUTIONS] in the general information and [High Voltage Part Inspection and Removal/Installation Notes] of the high voltage system service cautions and implement the necessary measures and preparations. (See HIGH VOLTAGE SERVICE CAUTIONS.) (See HIGH VOLTAGE SYSTEM SERVICE CAUTIONS.)

Step	Inspection	Results	Action
1	VERIFY EV SYSTEM RELATED DTCs •  Perform the DTC inspections for the following modules. (See DTC INSPECTION.) ―  PCM ―  BECM ―  Battery charge control module ―  Drive motor control module ―  Body control module (BCM) ―  Selector lever ―  Parking lock actuator •  Is a DTC displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [PCM (e-SKYACTIV)].) (See DTC TABLE [BECM (e-SKYACTIV)].) (See DTC TABLE [BATTERY CHARGE CONTROL MODULE (e-SKYACTIV)].) (See DTC TABLE [DRIVE MOTOR CONTROL MODULE (e-SKYACTIV)].) (See DTC TABLE [BODY CONTROL MODULE (BCM) (E)].) (See DTC TABLE [SELECTOR LEVER].) (See DTC TABLE [PARKING LOCK ACTUATOR].)
		No	Go to the next step.
2	INSPECT LEAD-ACID BATTERY FOR MALFUNCTION •  Inspect the applicable part. (See LEAD-ACID BATTERY INSPECTION.) •  Is the part normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification. (See LEAD-ACID BATTERY RECHARGING.) (See LEAD-ACID BATTERY REMOVAL/INSTALLATION.)
3	VERIFY PUSH BUTTON START SYSTEM OPERATION •  Perform the troubleshooting procedure according to the symptom troubleshooting for [PUSH BUTTON START SYSTEM DOES NOT OPERATE] of the security and locks. (See PUSH BUTTON START SYSTEM DOES NOT OPERATE [SECURITY AND LOCKS].) •  Is the troubleshooting result normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification.
4	INSPECT POWER SWITCH INDICATOR FOR MALFUNCTION •  Inspect the applicable part. (See POWER SWITCH INSPECTION.) •  Is the part normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification. (See POWER SWITCH REMOVAL/INSTALLATION.)
5	INSPECT POWER SWITCH POWER INDICATOR LIGHT CONTROL CIRCUIT FOR SHORT TO POWER SUPPLY AND OPEN CIRCUIT •  Inspect the applicable circuit for a short to power supply and open circuit. (See CIRCUIT INSPECTION.) •  Is the circuit normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification.
6	INSPECT INSTRUMENT CLUSTER FOR MALFUNCTION •  Inspect the applicable part. (See INSTRUMENT CLUSTER INSPECTION.) •  Is the part normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION [(E)].)
7	INSPECT STEERING LOCK UNIT FOR MALFUNCTION •  Inspect the applicable part. (See STEERING LOCK UNIT INSPECTION [(E)].) •  Is the part normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification. (See STEERING LOCK UNIT REMOVAL/INSTALLATION [(E)].)
8	INSPECT PTC HEATER FOR MALFUNCTION Warning <<High voltage>> •  Wear insulating gloves when working on a high voltage system. •  Disconnect the PTC heater high voltage cable connector. (See POSITIVE TEMPERATURE COEFFICIENT (PTC) HEATER REMOVAL/INSTALLATION.) Caution •  Connect each probe of the circuit tester to the designated terminal. Resistance cannot be accurately measured if reversed. •  Connect the circuit tester probes to the following terminals and measure the resistance between PTC heater terminals A and D. ―  Terminal A: + probe ―  Terminal D: - probe •  Is the resistance 1.0 MΩ or more?	Yes	Explain to the customer that the EV system may not start under the following conditions. •  High voltage battery charging •  High voltage battery voltage decreased Perform the repair completion verification.
		No	Repair or replace the malfunctioning location and perform the repair completion verification. (See POSITIVE TEMPERATURE COEFFICIENT (PTC) HEATER REMOVAL/INSTALLATION.)
Repair completion verification	VERIFY THAT VEHICLE IS REPAIRED •  Install/connect the part removed/disconnected during the troubleshooting procedure. •  Has the malfunction symptom been eliminated?	Yes	Complete the symptom troubleshooting. (Explain contents of repair to customer)
		No	Refer to the CAN (controller area network) malfunction diagnosis flow to inspect for a CAN communication error.   (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [L.H.D. (E)] .) (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [R.H.D.] .)