- DTC judgment completed
- System normal
| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM1000000026JS1 |
| Model Year Start: 2023 | Model: Corolla | Prod Date Range: [09/2022 - ] |
| Title: 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: P15AD87; Active Grille Air Shutter "A" Missing Message; 2023 - 2025 MY Corolla Corolla HV [09/2022 - ] | ||
|
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 |
|
DTC stored |
|
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
![2023 MY Corolla Corolla Hatchback [09/2022 - 11/2022]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR](/t3Portal/stylegraphics/info.gif)
-
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG).
- Turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the power switch off and wait for at least 30 seconds.
- Turn the power switch on (IG) [A].
- Turn the Techstream on.
- Wait 30 seconds or more [B].
- Enter the following menus: Powertrain / Engine / Trouble Codes [C].
-
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.
- Enter the following menus: Powertrain / Engine / Utility / All Readiness.
- Input the DTC: P15AD87.
-
Check the DTC judgment result.
Techstream Display
Description
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
(Select Powertrain in Health Check and then check the time stamp data.)
Click here
-
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
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.
|
|
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 |
|---|---|---|
|
A176-2 (LIN) - A46-31 (LIN) |
Always |
Below 1 Ω |
|
A176-2 (LIN) or A46-31 (LIN) - Body ground and other terminals |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
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 |
|---|---|---|
|
A176-1 (+B) - A176-3 (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
| OK |
|
|
|
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 |
|---|---|---|
|
A176-3 (GND) - Body ground |
Always |
Below 1 Ω |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
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, 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 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 |
|---|---|---|
|
A176-1 (+B) - 5 (EFI-MAIN NO. 1 Relay) |
Always |
Below 1 Ω |
|
A176-1 (+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 |
|
|
6. |
CHECK ECM POWER SOURCE CIRCUIT |
(a) Check the ECM power source circuit.
Click here
|
|
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 |
|
|