HYBRID CONTROL SYSTEM, Diagnostic DTC:P1508-208

DTC Code DTC Name
P1508-208 PTC A/C Auxiliary Heater Disabled High

DESCRIPTION

Refer to the description for DTC P1507-207 Click here.

DTC No. INF Code DTC Detection Condition Trouble Area
P1508 208 Short to +B in the PTC heater permission signal line (DCIM)

  • Wire harness or connector

  • Hybrid vehicle converter

  • Hybrid vehicle control ECU

WIRING DIAGRAM

Refer to the wiring diagram for DTC P1507-207 Click here.

INSPECTION PROCEDURE

CAUTION:


  • Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly, take safety precautions such as wearing insulated gloves and removing the service plug grip to prevent electrical shocks. After removing the service plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.

  • After disconnecting the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.

Tech Tips

Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR


    1. Turn the power switch off.

    2. A01H29WE02

      Disconnect the No. 2 battery pack wire connector Click here.

    3. Turn the power switch on (IG).

      Note

      Turning the power switch on (IG) with the No. 2 battery pack wire connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    4. A01GXOME11

      Measure the voltage according to the value(s) in the table below.

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      nS1-15 (DCIM) - Body ground Power switch on (IG) Below 1 V

    NG

    CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - NO. 2 BATTERY PACK WIRE CONNECTOR) Click here

    OK

  2. CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONVERTER CONNECTOR)

    CAUTION:

    Be sure to wear insulated gloves.


    1. Turn the power switch off.

    2. Remove the service plug grip Click here.

      Note

      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.

    3. A01H1FE
      A01H1W0

      Check the connection of the low voltage connector of the hybrid vehicle converter.

      OK
      The connector is connected securely and there are no contact problems.

      Tech Tips

      For the removal and installation procedures related to inspection of the connection of the low voltage connector of the hybrid vehicle converter, Click here.


    NG

    CONNECT SECURELY

    OK

  3. CHECK HARNESS AND CONNECTOR (NO. 2 BATTERY PACK WIRE CONNECTOR - HYBRID VEHICLE CONVERTER)

    CAUTION:

    Be sure to wear insulated gloves.


    1. Check that the service plug grip is not installed.

    2. Disconnect the low voltage connector from the hybrid vehicle converter.

      Tech Tips

      For the removal and installation procedures related to the low voltage connector of the hybrid vehicle converter, Click here.

    3. A01GXEHE13

      Measure the resistance according to the value(s) in the table below.

      Standard resistance
      Tester Connection Switch Condition Specified Condition
      nS1-15 (DCIM) - Other terminals Power switch off 10 kΩ or higher
      z82-12 (DCIM) - Other terminals Power switch off 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE HV CONVERTER Click here

  4. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - NO. 2 BATTERY PACK WIRE CONNECTOR)


    1. Turn the power switch off.

    2. Disconnect connector A76 from the hybrid vehicle control ECU.

    3. Turn the power switch on (IG).

    4. A01H26FE05

      Measure the voltage according to the value(s) in the table below.

      Note

      Turning the power switch on (IG) with the hybrid vehicle control ECU connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      A76-8 (DCIM) - Body ground Power switch on (IG) Below 1 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE HYBRID VEHICLE CONTROL ECU Click here