RM36D0EC _51 Engine / Hybrid System _083058 M20D-FKS ENGINE CONTROL _0401834 SFI SYSTEM C

M20D-FKS ENGINE CONTROL  SFI SYSTEM  P21352B  Throttle/Pedal Position Sensor/Switch "A"/"B" Voltage Correlation Signal Cross Coupled  


DESCRIPTION

Refer to DTC P012011.

Click hereEngine / Hybrid System>M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>P012011

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P21352B Throttle/Pedal Position Sensor/Switch "A"/"B" Voltage Correlation Signal Cross Coupled The difference between the output voltage of VTA1 and VTA2 is 0.02 V or less for 2 seconds or more (1 trip detection logic).
·

Throttle position sensor (throttle body with motor assembly)

·

Short between VTA1 and VTA2 circuits

·

Open in ETA circuit

·

Open in VCTA circuit

·

ECM


Comes on DTC stored SAE: P2135

MONITOR DESCRIPTION

VTA1 and VTA2 should never be close to the same voltage level. If VTA1 is within 0.02 V or less of VTA2 for 2 seconds or more, the ECM will determine there is a short in the sensor circuit, illuminate the MIL and store this DTC.

MONITOR STRATEGY

Frequency of Operation Continuous

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 hereEngine / Hybrid System>M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>DTC CHECK / CLEAR

·

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

Click hereEngine / Hybrid System>M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>DTC CHECK / CLEAR



A408677E24
2.646,2 2.375,1.344 2.375,1.344 2.656,1.344 false 4.948,1.99 5.146,1.385 5.146,1.385 5.417,1.385 false 3.792,1.177 3.521,0.521 3.521,0.521 3.802,0.521 false 0.469,2.156 1.635,2.354 1.167,0.198 10 false Ignition Switch ON 1.281,1.906 3.333,2.177 2.052,0.271 10 false Idling 2.125,2.042 2.813,2.344 0.688,0.302 10 false [A] 3.833,1.688 4.521,1.99 0.688,0.302 10 false [B] 4.677,1.792 5.365,2.094 0.688,0.302 10 false [C] 5.021,2.969 5.708,3.271 0.688,0.302 10 false [D] 4.427,2.635 5.094,3.021 0.667,0.385 10 false 2 seconds or more 2.719,1.281 3.823,1.552 1.104,0.271 10 false Released 5.469,1.323 6.573,1.594 1.104,0.271 10 false Released 3.865,0.448 4.969,0.719 1.104,0.271 10 false Depressed

1.

Connect the GTS to the DLC3.

2.

Turn the ignition switch to ON.

3.

Turn the GTS on.

4.

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

5.

Turn the ignition switch off and wait for at least 30 seconds.

6.

Turn the ignition switch to ON [A].

7.

Turn the GTS on.

8.

Start the engine.

9.

With the vehicle stationary, fully depress and release the accelerator pedal [B].

10.

Idle the engine for 2 seconds or more [C].

11.

Enter the following menus: Powertrain / Engine / Trouble Codes [D].

12.

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.



13.

Enter the following menus: Powertrain / Engine / Utility / All Readiness.

14.

Input the DTC: P21352B.

15.

Check the DTC judgment result.

GTS 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 is malfunctioning.

·

If the judgment result is INCOMPLETE, perform steps [B] through [D] again.

·

[A] to [D]: 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 battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.




FAIL-SAFE

When this DTC is stored, the ECM enters fail-safe mode. During fail-safe mode, the ECM cuts the current to the throttle actuator, and the throttle valve is returned to a 7.5° throttle valve opening angle by the return spring. The ECM then adjusts the engine output by controlling the fuel injection (intermittent fuel-cut) and ignition timing, in accordance with the accelerator pedal angle, to allow the vehicle to continue running at a minimal speed. If the accelerator pedal is depressed firmly and gently, the vehicle can be driven slowly.

Fail-safe mode continues until a pass condition is detected, and the ignition switch turned off.

CAUTION / NOTICE / HINT

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.READ VALUE USING GTS (THROTTLE POSITION SENSOR VOLTAGE)
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Powertrain / Engine / Data List / Throttle Position Sensor No.1 Voltage and Throttle Position Sensor No.2 Voltage.

Powertrain > Engine > Data List
Tester Display
Throttle Position Sensor No.1 Voltage
Throttle Position Sensor No.2 Voltage
50003 372 75,76

e.

Read the values displayed on the GTS.


Result:
Result Proceed to
Value of both Throttle Position Sensor No.1 Voltage and Throttle Position Sensor No.2 Voltage are less than 0.56 V A
Value of both Throttle Position Sensor No.1 Voltage and Throttle Position Sensor No.2 Voltage are higher than 4.535 V B
Value of both Throttle Position Sensor No.1 Voltage and Throttle Position Sensor No.2 Voltage are between 0.56 V and 4.535 V C



A

2.CHECK HARNESS AND CONNECTOR (THROTTLE POSITION SENSOR - ECM)

B

4.CHECK HARNESS AND CONNECTOR (GROUND CIRCUIT)

C

6.CHECK HARNESS AND CONNECTOR (SHORT CIRCUIT)
2.CHECK HARNESS AND CONNECTOR (THROTTLE POSITION SENSOR - ECM)
a.

Disconnect the throttle body with motor 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
C15-2 (VC) - C71-158 (VCTA) Always Below 1 Ω
C15-1 (VTA) - C71-159 (VTA1) Always Below 1 Ω
C15-3 (VTA2) - C71-127 (VTA2) Always Below 1 Ω
C15-4 (E2) - C71-157 (ETA) Always Below 1 Ω
C15-2 (VC) or C71-158 (VCTA) - Body ground and other terminals Always 10 kΩ or higher
C15-1 (VTA) or C71-159 (VTA1) - Body ground and other terminals Always 10 kΩ or higher
C15-3 (VTA2) or C71-127 (VTA2) - Body ground and other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

3.INSPECT TERMINAL VOLTAGE (POWER SOURCE OF THROTTLE POSITION SENSOR)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.INSPECT TERMINAL VOLTAGE (POWER SOURCE OF THROTTLE POSITION SENSOR)
A435145C05
0.167,1.063 0.531,1.333 0.365,0.271 1.031,1.802 1.375,1.188 true 2.104,1.844 1.802,1.188 true 0.208,0.188 0.521,0.385 0.313,0.198 10 false *a 0.24,1.125 0.552,1.323 0.313,0.198 10 false C15 0.927,1.865 1.24,2.063 0.313,0.198 10 false VC 2.063,1.875 2.375,2.073 0.313,0.198 10 false E2
*a Front view of wire harness connector
(to Throttle Body with Motor Assembly)


a.

Disconnect the throttle body with motor assembly connector.


b.

Turn the ignition switch to ON.


c.

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
C15-2 (VC) - C15-4 (E2) Ignition Switch ON 4.5 to 5.5 V



HINT:

Perform "Inspection After Repair" after replacing the throttle body with motor assembly.

Click hereEngine / Hybrid System>M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION


Result:
Proceed to
OK
NG



OK

REPLACE THROTTLE BODY WITH MOTOR ASSEMBLY

Click hereEngine / Hybrid System>M20D-FKS (ENGINE CONTROL)>THROTTLE BODY>REMOVAL


NG

REPLACE ECM

Click hereEngine / Hybrid System>M20D-FKS (ENGINE CONTROL)>ECM>REMOVAL


4.CHECK HARNESS AND CONNECTOR (GROUND CIRCUIT)
HINT:

Make sure that the connector is properly connected. If it is not, securely connect it and check for DTCs again.


a.

Disconnect the throttle body with motor assembly connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
C15-4 (E2) - Body ground Always Below 1 Ω



HINT:

Perform "Inspection After Repair" after replacing the throttle body with motor assembly.

Click hereEngine / Hybrid System>M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION


Result:
Proceed to
OK
NG



OK

REPLACE THROTTLE BODY WITH MOTOR ASSEMBLY

Click hereEngine / Hybrid System>M20D-FKS (ENGINE CONTROL)>THROTTLE BODY>REMOVAL


NG

5.CHECK HARNESS AND CONNECTOR (THROTTLE POSITION SENSOR - ECM)
5.CHECK HARNESS AND CONNECTOR (THROTTLE POSITION SENSOR - ECM)
a.

Disconnect the throttle body with motor 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
C15-2 (VC) - C71-158 (VCTA) Always Below 1 Ω
C15-1 (VTA) - C71-159 (VTA1) Always Below 1 Ω
C15-3 (VTA2) - C71-127 (VTA2) Always Below 1 Ω
C15-4 (E2) - C71-157 (ETA) Always Below 1 Ω
C15-2 (VC) or C71-158 (VCTA) - Other terminals Always 10 kΩ or higher
C15-1 (VTA) or C71-159 (VTA1) - Other terminals Always 10 kΩ or higher
C15-3 (VTA2) or C71-127 (VTA2) - Other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE ECM

Click hereEngine / Hybrid System>M20D-FKS (ENGINE CONTROL)>ECM>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.CHECK HARNESS AND CONNECTOR (SHORT CIRCUIT)
a.

Disconnect the throttle body with motor assembly connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
C15-1 (VTA) - C15-3 (VTA2) Always 10 kΩ or higher



HINT:

Perform "Inspection After Repair" after replacing the throttle body with motor assembly.

Click hereEngine / Hybrid System>M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION


Result:
Proceed to
OK
NG



OK

REPLACE THROTTLE BODY WITH MOTOR ASSEMBLY

Click hereEngine / Hybrid System>M20D-FKS (ENGINE CONTROL)>THROTTLE BODY>REMOVAL


NG

7.CHECK HARNESS AND CONNECTOR (SHORT CIRCUIT)
7.CHECK HARNESS AND CONNECTOR (SHORT CIRCUIT)
a.

Disconnect the throttle body with motor 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
C15-1 (VTA) - C15-3 (VTA2) Always 10 kΩ or higher



HINT:

If the resistance changes when the ECM connector is disconnected, there is an internal short in the ECM.


Result:
Proceed to
OK
NG



OK

REPLACE ECM

Click hereEngine / Hybrid System>M20D-FKS (ENGINE CONTROL)>ECM>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (THROTTLE POSITION SENSOR - ECM)