DTC P2122:00 [LF, L5]

id0102c8708300

DTC P2122:00

APP sensor No.1 circuit low input
DETECTION CONDITION
•  The PCM monitors the input voltage from APP sensor No.1 when the engine is running. If the input voltage is less than 0.1 V, the PCM determines that the APP sensor No.1 circuit input voltage is low.
Diagnostic support note
•  This is a continuous monitor (CCM).
•  The MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle.
•  FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
•  The DTC is stored in the PCM memory.
POSSIBLE CAUSE
ACCELERATOR PEDAL POSITION SENSOR CONNECTOR C TYPE
•  APP sensor connector or terminals malfunction
•  Short to ground in wiring harness between the following terminals:
―  APP sensor terminal F—PCM terminal 1AE
―  APP sensor terminal E—PCM terminal 1AP
•  PCM connector or terminals malfunction
•  APP sensor signal circuit and ground circuit are shorted to each other
•  Open circuit in wiring harness between the following terminals:
―  APP sensor terminal F—PCM terminal 1AE
―  APP sensor terminal E—PCM terminal 1AP
•  APP sensor No.1 malfunction
•  PCM malfunction
ACCELERATOR PEDAL POSITION SENSOR CONNECTOR D TYPE
•  APP sensor connector or terminals malfunction
•  Short to ground in wiring harness between the following terminals:
―  APP sensor terminal A—PCM terminal 1AE
―  APP sensor terminal B—PCM terminal 1AP
•  PCM connector or terminals malfunction
•  APP sensor signal circuit and ground circuit are shorted to each other
•  Open circuit in wiring harness between the following terminals:
―  APP sensor terminal A—PCM terminal 1AE
―  APP sensor terminal B—PCM terminal 1AP
•  APP sensor No.1 malfunction
•  PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
VERIFY FREEZE FRAME DATA (MODE 2)/SNAPSHOT DATA HAS BEEN RECORDED
•  Has the FREEZE FRAME DATA (Mode 2)/snapshot data been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA (Mode 2)/snapshot data on repair order, then go to the next step.
2
VERIFY RELATED SERVICE INFORMATION AVAILABILITY
•  Verify related Service Information availability.
•  Is any related Service Information available?
Yes
Perform repair or diagnosis according to the available Service Information.
•  If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
INSPECT APP SENSOR CONNECTOR CONDITION
•  Switch the ignition to off.
•  Disconnect the APP sensor connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, and corrosion).
•  Is there any malfunction?
Yes
Repair or replace the terminal and/or connector, then go to Step 9.
No
Go to the next step.
4
INSPECT APP SENSOR NO.1 CIRCUIT FOR SHORT TO GROUND
ACCELERATOR PEDAL POSITION SENSOR CONNECTOR C TYPE
•  APP sensor connector is disconnected.
•  Inspect for continuity between the following terminals (wiring harness-side) and body ground:
―  APP sensor terminal F
―  APP sensor terminal E
•  Is there continuity?
ACCELERATOR PEDAL POSITION SENSOR CONNECTOR D TYPE
•  APP sensor connector is disconnected.
•  Inspect for continuity between the following terminals (wiring harness-side) and body ground:
―  APP sensor terminal A
―  APP sensor terminal B
•  Is there continuity?
Yes
If the short to ground circuit could be detected:
•  Repair or replace the wiring harness for a possible short to ground.
If the short to ground circuit could not be detected:
•  Replace the PCM (short to ground in PCM internal circuit).
Go to Step 9.
No
Go to the next step.
5
INSPECT PCM CONNECTOR CONDITION
•  Disconnect the PCM connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, and corrosion).
•  Is there any malfunction?
Yes
Repair or replace the terminal and/or connector, then go to Step 9.
No
Go to the next step.
6
INSPECT APP SENSOR NO.1 SIGNAL CIRCUIT AND GROUND CIRCUIT FOR SHORT TO EACH OTHER
ACCELERATOR PEDAL POSITION SENSOR CONNECTOR C TYPE
•  APP sensor and PCM connectors are disconnected.
•  Inspect for continuity between APP sensor terminals E and D (wiring harness-side).
•  Is there continuity?
ACCELERATOR PEDAL POSITION SENSOR CONNECTOR D TYPE
•  APP sensor and PCM connectors are disconnected.
•  Inspect for continuity between APP sensor terminals B and C (wiring harness-side).
•  Is there continuity?
Yes
Repair or replace the malfunctioning wiring harness, then go to Step 9.
No
Go to the next step.
7
INSPECT APP SENSOR NO.1 CIRCUIT FOR OPEN CIRCUIT
ACCELERATOR PEDAL POSITION SENSOR CONNECTOR C TYPE
•  APP sensor and PCM connectors are disconnected.
•  Inspect for continuity between the following terminals (wiring harness-side):
―  APP sensor terminal F—PCM terminal 1AE
―  APP sensor terminal E—PCM terminal 1AP
•  Is there continuity?
ACCELERATOR PEDAL POSITION SENSOR CONNECTOR D TYPE
•  APP sensor and PCM connectors are disconnected.
•  Inspect for continuity between the following terminals (wiring harness-side):
―  APP sensor terminal A—PCM terminal 1AE
―  APP sensor terminal B—PCM terminal 1AP
•  Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness for a possible open circuit, then go to Step 9.
8
INSPECT APP SENSOR NO.1
•  Reconnect the APP sensor and PCM connectors.
•  Inspect the APP sensor No.1.
•  Is there any malfunction?
Yes
Replace the accelerator pedal, then go to the next step.
(See ACCELERATOR PEDAL REMOVAL/INSTALLATION [LF, L5].)
No
Go to the next step.
9
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Perform the KOEO/KOER self test.
•  Is the same DTC present?
Yes
Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION [LF, L5].)
No
Go to the next step.
10
VERIFY AFTER REPAIR PROCEDURE
•  Perform the “AFTER REPAIR PROCEDURE”.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [LF, L5].)
No
DTC troubleshooting completed.