Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM100000001SA1J
Model Year Start: 2021 Model: Camry HV Prod Date Range: [10/2020 -           ]
Title: A25A-FXS (ENGINE CONTROL): SFI SYSTEM: P15AD87; Active Grille Air Shutter "A" Missing Message; 2021 - 2024 MY Camry HV [10/2020 -        ]

DTC

P15AD87

Active Grille Air Shutter "A" Missing Message

DESCRIPTION

The ECM and swing grille actuator assembly each detect reception malfunctions. Swing grille actuator assembly reception malfunctions detected by the swing grille actuator assembly are sent to the ECM via LIN communication.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

Note

P15AD87

Active Grille Air Shutter "A" Missing Message

ECM or swing grille actuator assembly communication stops for 15.5 seconds or more with the Power switch on (IG) (2 trip detection logic).

Radiator shutter assembly

Comes on

DTC stored

  • SAE Code: P15AD
  • DTC for Mexico Models: Applies

MONITOR DESCRIPTION

When a communication malfunction occurs in either the ECM or swing grille actuator assembly, the ECM stores a DTC.

MONITOR STRATEGY

Related DTCs

P15AD: Active grille air shutter control module verify communication

Required Sensors/Components (Main)

Swing grille actuator assembly

ECM

Required Sensors/Components (Related)

-

Frequency of Operation

Continuous

Duration

15.5 seconds

MIL Operation

2 driving cycles

Sequence of Operation

None

TYPICAL ENABLING CONDITIONS

Monitor runs whenever the following DTCs are not stored

None

Both of the following conditions are met

-

Auxiliary battery voltage

8 V or higher

Time after power switch off to ON

0.5 seconds or higher

TYPICAL MALFUNCTION THRESHOLDS

Either of the following conditions is met

-

Lost communication at LIN driver

Judged

LIN error signal from the actuator

Received

CONFIRMATION DRIVING PATTERN

HINT:

  • After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

    Click here 2018 - 2021 MY Camry HV [07/2017 - 08/2021]; A25A-FXS (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR 2022 MY Camry HV [08/2021 - 08/2022]; A25A-FXS (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR 2023 - 2024 MY Camry HV [08/2022 -        ]; A25A-FXS (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR

  • When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.

    Click here 2018 - 2021 MY Camry HV [07/2017 - 08/2021]; A25A-FXS (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR 2022 MY Camry HV [08/2021 - 08/2022]; A25A-FXS (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR 2023 - 2024 MY Camry HV [08/2022 -        ]; A25A-FXS (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR

  1. Connect the Techstream to the DLC3.
  2. Turn the power switch on (IG).
  3. Turn the Techstream on.
  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  5. Turn the power switch off and wait for at least 30 seconds.
  6. Turn the power switch on (IG) [A].
  7. Turn the Techstream on.
  8. Wait 30 seconds or more [B].
  9. Enter the following menus: Powertrain / Engine / Trouble Codes [C].
  10. Read the pending DTCs.

    HINT:

    • If a pending DTC is output, the system is malfunctioning.
    • If a pending DTC is not output, perform the following procedure.
  11. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
  12. Input the DTC: P15AD87.
  13. Check the DTC judgment result.

    Techstream Display

    Description

    NORMAL

    • DTC judgment completed
    • System normal

    ABNORMAL

    • DTC judgment completed
    • System abnormal

    INCOMPLETE

    • DTC judgment not completed
    • Perform driving pattern after confirming DTC enabling conditions

    HINT:

    • If the judgment result is NORMAL, the system is normal.
    • If the judgment result is ABNORMAL, the system has a malfunction.
    • [A] to [C]: Normal judgment procedure.

      The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

    • When clearing the permanent DTCs, do not disconnect the cable from the auxiliary battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Inspect the fuses for circuits related to this system before performing the following procedure.
  • In order to ensure safety, before performing troubleshooting or removing the radiator shutter assembly, change the grille shutter control mode to maintenance mode.
  • Vehicle Control History may be stored in the hybrid vehicle control ECU if the engine is malfunctioning. Certain vehicle condition information is recorded when Vehicle Control History is stored. Reading the vehicle conditions recorded in both the Freeze Frame Data and Vehicle Control History can be useful for troubleshooting.

    Click here 2021 - 2024 MY Camry HV [10/2020 -        ]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY): VEHICLE CONTROL HISTORY

    (Select Powertrain in Health Check and then check the time stamp data.)

    Click here 2018 - 2021 MY Camry HV [07/2017 - 08/2021]; A25A-FXS (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR 2022 MY Camry HV [08/2021 - 08/2022]; A25A-FXS (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR 2023 - 2024 MY Camry HV [08/2022 -        ]; A25A-FXS (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR

  • If any "Engine Malfunction" Vehicle Control History item has been stored in the hybrid vehicle control ECU, make sure to clear it. However, as all Vehicle Control History items are cleared simultaneously, if any Vehicle Control History items other than "Engine Malfunction" are stored, make sure to perform any troubleshooting for them before clearing Vehicle Control History.

    Click here 2021 - 2024 MY Camry HV [10/2020 -        ]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY): VEHICLE CONTROL HISTORY

HINT:

Read Freeze Frame Data using the GTS. The ECM records vehicle and driving condition information as Freeze Frame Data the moment a DTC is stored. When troubleshooting, Freeze Frame Data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE

1.

PERFORM UTILITY USING TECHSTREAM (SWITCH GRILLE SHUTTER CONTROL MODE)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine / Utility / Switch Grille Shutter Control Mode.

Powertrain > Engine > Utility

Tester Display

Switch Grille Shutter Control Mode

(e) According to the display on the Techstream, change the grille shutter control mode from normal mode to maintenance mode.

NEXT

2.

CHECK HARNESS AND CONNECTOR (SWING GRILLE ACTUATOR ASSEMBLY - ECM)

(a) Disconnect the swing grille actuator assembly connector.

(b) Disconnect the ECM connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

j2-2 (LIN) - C100-62 (LIN)

Always

Below 1 Ω

j2-2 (LIN) or C100-62 (LIN) - Body ground and other terminals

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

3.

CHECK TERMINAL VOLTAGE (POWER SOURCE OF SWING GRILLE ACTUATOR ASSEMBLY)

*a

Front view of wire harness connector

(to Swing Grille Actuator Assembly)

(a) Disconnect the swing grille actuator assembly connector.

(b) Turn the power switch to on (IG).

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

j2-1 (+B) - j2-3 (GND)

Power switch to on (IG)

11 to 14 V

HINT:

Perform "Switch Grille Shutter Control Mode and Grille Shutter Initialization" after replacing the radiator shutter assembly.

Click here 2021 - 2024 MY Camry HV [10/2020 -        ]; A25A-FXS (ENGINE CONTROL): SFI SYSTEM: INITIALIZATION

OK

REPLACE RADIATOR SHUTTER ASSEMBLY

NG

4.

CHECK HARNESS AND CONNECTOR (SWING GRILLE ACTUATOR ASSEMBLY - BODY GROUND)

(a) Disconnect the swing grille actuator assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

j2-3 (GND) - Body ground

Always

Below 1 Ω

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

5.

CHECK HARNESS AND CONNECTOR (SWING GRILLE ACTUATOR ASSEMBLY - EFI-MAIN NO. 1 RELAY)

(a) Disconnect the swing grille actuator assembly connector.

(b) Remove the EFI-MAIN NO. 1, VVT, EFI-MAIN NO. 2 and EFI-MAIN NO. 3 relays from the No. 1 engine room relay block and No. 1 junction block assembly.

HINT:

Remove the VVT, EFI-MAIN NO. 2 and EFI-MAIN NO. 3 relays connected between the checked terminals as the coil inside the relay influences the measurement value.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

j2-1 (+B) - 5 (EFI-MAIN NO. 1 Relay)

Always

Below 1 Ω

j2-1 (+B) or 5 (EFI-MAIN NO. 1 Relay) - Body ground and other terminals

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

6.

CHECK ECM POWER SOURCE CIRCUIT

(a) Check the ECM power source circuit.

Click here 2018 - 2024 MY Camry HV [07/2017 -        ]; A25A-FXS (ENGINE CONTROL): SFI SYSTEM: ECM Power Source Circuit

NEXT

7.

READ VALUE USING TECHSTREAM (GRILLE SHUTTER CONTROL MODE)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine / Utility / Switch Grille Shutter Control Mode.

Powertrain > Engine > Utility

Tester Display

Switch Grille Shutter Control Mode

(e) According to the display on the Techstream, change the grille shutter control mode from maintenance mode to normal mode.

(f) Enter the following menus: Powertrain / Engine / Data List /Grille Shutter Control Mode.

Powertrain > Engine > Data List

Tester Display

Grille Shutter Control Mode

(g) Read the value displayed on the Techstream.

Standard:

Techstream Display

Specified Condition

Grille Shutter Control Mode

Normal

NEXT

END