- Coolant Temperature
- Electric Water Pump Target Speed
- Electric Water Pump Speed
| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001FMQQ |
| Model Year Start: 2019 | Model: RAV4 | Prod Date Range: [11/2018 - 08/2020] |
| Title: A25A-FKS (ENGINE CONTROL): SFI SYSTEM (w/o Canister Pump Module): P26CA14; Engine Coolant Pump Circuit Short to Ground or Open; 2019 - 2020 MY RAV4 [11/2018 - 08/2020] | ||
|
DTC |
P26CA14 |
Engine Coolant Pump Circuit Short to Ground or Open |
DESCRIPTION
Refer to DTC P26CA12.
Click here
![2019 - 2020 MY RAV4 [11/2018 - 08/2020]; A25A-FKS (ENGINE CONTROL): SFI SYSTEM (w/o Canister Pump Module): P26CA12; Engine Coolant Pump Circuit Short to Battery+](/t3Portal/stylegraphics/info.gif)
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Memory |
Note |
|---|---|---|---|---|---|---|
|
P26CA14 |
Engine Coolant Pump Circuit Short to Ground or Open |
The operation duty ratio (WPO) of the monitoring engine water pump assembly becomes a certain amount or less when engine water pump assembly operation command is output (1 trip detection logic). |
|
Comes on |
DTC stored |
SAE Code: P26CC |
Related Data List
|
DTC No. |
Data List |
|---|---|
|
P26CA14 |
|
MONITOR DESCRIPTION
The ECM outputs an operation duty signal (WPO) to steplessly control the speed of the engine water pump assembly. The ECM outputs an operation duty signal (WPO) to the engine water pump assembly and monitors the actual duty signal (WPO) being output. When the operation duty signal (WPO) is being output to the engine water pump assembly and the actual operation duty signal (WPO) is a certain value or less, the ECM detects a malfunction and stores a DTC.
MONITOR STRATEGY
|
Required Sensors/Components |
Engine water pump assembly |
|
Frequency of Operation |
Continuous |
CONFIRMATION DRIVING PATTERN
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON.
- Turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the ignition switch off and wait for at least 30 seconds.
- Turn the ignition switch to ON [A].
- Turn the Techstream on.
- Move the shift lever to P [B].
- Start the engine and maintain the engine speed at 2500 rpm or more for at least 40 seconds [C].
- Enter the following menus: Powertrain / Engine / Trouble Codes [D].
-
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: P26CA14.
-
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.
- If the judgment result is INCOMPLETE, perform steps [B] through [D] again.
WIRING DIAGRAM
Refer to DTC P26CA12.
Click here
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following procedure.
HINT:
Read Freeze Frame Data using the Techstream. 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. |
INSPECT ECM (INTERNAL CIRCUIT) |
|
*a |
Front view of wire harness connector (to Engine Water Pump Assembly (Water Inlet Housing)) |
(a) Disconnect the engine water pump assembly (water inlet housing) connector.
(b) Turn the ignition switch to ON.
(c) Measure the resistance according to the value(s) in the table below.
Standard:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
C23-2 (SWP) - Body ground |
Ignition switch ON |
Resistance fluctuates* |
HINT:
- *: When the connector of the engine water pump assembly is disconnected, the ECM will enter fail-safe mode. When the ECM is in fail-safe mode, a continuous duty signal will be output and the resistance will fluctuate as the transistor inside the ECM is turned on an off.
- If the resistance fluctuates while the ECM is in fail-safe mode after the connector of the engine water pump assembly is disconnected, it can be determined that the transistor is operating.
- If the transistor does not operate, the ECM may be malfunctioning.
- If the resistance fluctuates after turning the ignition switch to ON, it can be determined that the ECM is in fail-safe mode.
| NG |
|
|
|
2. |
CHECK HARNESS AND CONNECTOR (ENGINE WATER PUMP ASSEMBLY (WATER INLET HOUSING) - ECM) |
(a) Disconnect the engine water pump assembly (water inlet housing) 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 |
|---|---|---|
|
C23-2 (SWP) - C40-50 (WPO) |
Always |
Below 1 Ω |
|
C23-2 (SWP) or C40-50 (WPO) - Body ground |
Always |
10 kΩ or higher |
| OK |
|
REPLACE ENGINE WATER PUMP ASSEMBLY (WATER INLET HOUSING)
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|