DESCRIPTION
The idle speed is controlled by the Electronic Throttle Control System (ETCS). The ETCS is comprised of a throttle actuator, which operates the throttle valve, and a throttle position sensor, which detects the opening amount of the throttle valve. The ECM controls the throttle actuator to adjust the throttle valve opening amount so that the idle speed is maintained at the target idle speed.
DTC No. |
DTC Detection Condition |
Trouble Area |
---|---|---|
P2109 |
The ISC learned value is approximately 3 times larger than normal even though the actual intake air amount during idling is within the normal range (up to 1.5 times the normal amount) (5 trip detection logic). |
Throttle body |
HINT:
MONITOR DESCRIPTION
If there are deposits in the throttle valve, a decrease in the ISC flow rate may cause engine stall or unstable idling. Therefore, the necessary ISC flow rate for idling is maintained using the ISC learned value and feedback. The ECM stores this DTC if the ISC learned value approaches its limit. The ECM begins monitoring for the DTC detection conditions when the following preconditions are met:
CAUTION / NOTICE / HINT
HINT:
PROCEDURE
1. |
CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2109) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Trouble Codes.
(e) Read the DTCs.
Result
Result |
Proceed to |
---|---|
DTC P2109 is output |
A |
DTC P2109 and other DTCs are output |
B |
HINT:
If any DTCs other than P2109 are output, troubleshoot those DTCs first.
B | ![]() |
GO TO DTC CHART |
|
2. |
READ FREEZE FRAME DATA |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Using the Techstream, check "ISC Learning Value" in the freeze frame data
(See page ).
HINT:
Be sure to confirm "ISC Learning Value" in the freeze frame data as it is used when confirming whether the malfunction has been successfully repaired.
|
3. |
REMOVE FOREIGN OBJECT (CLEAN THROTTLE BODY) |
(a) Clean off any deposits from the inside of the throttle body.
Text in Illustration
*1 |
Bore |
*2 |
Valve |
*a |
Reference |
*b |
Throttle Body Cross-section Diagram |
*c |
When valve fully opened |
*d |
Deposits |
*e |
Do not directly apply cleaner |
(1) Push open the throttle valve and wipe off any carbon from the valve and bore using a cloth soaked in non-residue solvent.
NOTICE:
HINT:
If the throttle valve does not open smoothly, replace the throttle body.
|
4. |
READ VALUE USING TECHSTREAM (ISC LEARNING VALUE) |
(a) Perform "Inspection After Repair" after cleaning the throttle body (See page
).
(b) Connect the Techstream to the DLC3.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Data List / Primary / ISC Learning Value.
(e) Read the value.
OK:
The value is half of "ISC Learning Value" recorded in the freeze frame data or less.
HINT:
Perform "Inspection After Repair" after replacing the throttle body (See page
).
OK | ![]() |
END |
NG | ![]() |
REPLACE THROTTLE BODY |
Unmatched Key Code (B2795)
DESCRIPTION
This DTC is stored when a key with a key code that has not been registered in
the ECU is inserted into the ignition key cylinder.
DTC No.
DTC Detection Condition
Trouble Area
B2795
Ke ...
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms.
If multiple suspected areas are listed, the potential causes of the symptoms
are listed in order of probability in the "Suspected Area" ...
Back Door Motor Clutch Malfunction (B2225)
DESCRIPTION
When an electrical malfunction (open or short) is detected in the clutch circuit
of the power back door ECU (power back door motor unit) while the power back door
is operating, the power back door ECU (power back door motor unit) stores DTC B2 ...