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DTC P2135-00: Throttle Position Sensor (main and sub) Range/Performance Problem
 
 
 
 
CIRCUIT OPERATION
  • The throttle position sensor (main) and throttle position sensor (sub) are built into the throttle body assembly.
  • A power voltage of 5 volts is applied to the throttle body assembly connector terminal number 5 from the ECM connector terminal number 32.
  • The power voltage is earthed to the ECM connector terminal number 33 from the throttle body assembly connector terminalnumber3.
  • The sensor signal (main) is input to the ECM connector terminal number 43 from the throttle body assembly connector terminal number 4.
  • The sensor signal (sub) is input to the ECM connector terminal number 44 from the throttle body assembly connector terminal number 6.
 
 
TECHNICAL DESCRIPTION
ECM checks the throttle position sensor output signal characteristics for abnormal conditions.
 
 
DESCRIPTIONS OF MONITOR METHODS
Detect malfunction if the relation between throttle position sensor (main) and throttle position sensor (sub) is wrong.
 
 
MONITOR EXECUTION
Continuous.
 
 
MONITOR EXECUTION CONDITIONS (Other monitor and Sensor)
Other Monitor (There is no temporary DTC set in memory for the item monitored below)
  • Not applicable
Sensor (The sensor below is determined to be normal)
  • Not applicable
 
 
DTC SET CONDITIONS
Logic Flow Chart
Check Conditions
  • Throttle position sensor (main) output voltage is between 0.2 and 4.8 volts.
  • Throttle position sensor (sub) output voltage is between 0.2 and 4.8 volts.
Judgment Criterion
  • For 0.3 second, the sum of the output voltage of the throttle position sensors (main) and (sub) is lower than 4.5 volts, or higher than 5.5 volts.
Logic Flow Chart
Check Conditions
  • The target output voltage of the throttle position sensor is 0.9 volt or less.
  • Throttle position sensor (main) output voltage is between 0.2 and 4.8 volts.
  • Throttle position sensor (sub) output voltage is between 0.2 and 4.8 volts.
  • 12V battery positive voltage is higher than 8.3 volts.
Judgment Criterion
  • The difference between V1 and V2 is 0.3 volt or higher for 0.3 second.
    • V1: Throttle position sensor (main) output voltage
    • V2: Throttle position sensor (sub) output voltage subtracted from 5 volts
 
 
FAIL-SAFE AND BACKUP FUNCTION
Throttle opening degree position is in default position.
 
 
OBD-II DRIVE CYCLE PATTERN
Refer to Diagnostic Function, OBD-II Drive Cycle – Pattern 1 OBD- II DRIVE CYCLE.
 
 
TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
  • Throttle position sensor (built into the throttle body assembly) failed.
  • Throttle position sensor circuit harness damage or connector damage.
  • ECM failed.
 
 
DIAGNOSIS
Required Special Tools:
  • MB992744: Vehicle communication interface-Lite (V.C.I.-Lite)
  • MB992745: V.C.I.-Lite main harness A
  • MB992747: V.C.I.-Lite USB cable short
  • MB992748: V.C.I.-Lite USB cable long
1.STEP 1. Perform resistance measurement at throttle body assembly connector terminal number 3.
(1) Disconnect connector, and measure at harness side.
(2) Measure the resistance between the throttle body assembly connector terminal number 3 and ground.
OK: Continuity (2 ohms or less)
Q: Is the check result normal?
 
2.STEP 2. Check of damage in wiring harness between throttle body assembly connector terminal number 3 and ECM connector terminal number 33.
Q: Is the check result normal?
Repair or replace the connector, repair the damaged harness wire.
 
3.STEP 3. Test the OBD-II drive cycle.
After erasing the DTC, carry out test drive with the drive cycle pattern, and recheck the DTC.
(1) Use scan tool (M.U.T.-III SE) to erase the DTC.
(2) Carry out test drive with the drive cycle pattern (Refer to Diagnostic Function, OBD-II Drive Cycle – Pattern 1 OBD- II DRIVE CYCLE).
(3) Use scan tool (M.U.T.-III SE) to recheck the DTC.
Q: Is DTC P2135-00 set?
Replace the ECM (Refer to ENGINE CONTROL MODULE (ECM) REMOVAL AND INSTALLATION).
Intermittent malfunction (Refer to GENERAL INFORMATION, General Information – How to Use Troubleshooting/Inspection Service Points – How to Cope with Intermittent Malfunctions HOW TO COPE WITH INTERMITTENT MALFUNCTIONS).
 
4.STEP 4. Check of damage in wiring harness between throttle body assembly connector terminal number 5 and ECM connector terminal number 32.
Q: Is diagnosis code set?
Repair or replace the connector, repair the damaged harness wire.
 
5.STEP 5. Check of damage in wiring harness between throttle body assembly connector terminal number 4 and ECM connector terminal number 43.
Q: Is the check result normal?
Repair or replace the connector, repair the damaged harness wire.
 
6.STEP 6. Check of damage in wiring harness between throttle body assembly connector terminal number 6 and ECM connector terminal number 44.
Q: Is the check result normal?
Replace the throttle body assembly with built-in throttle position sensor) (Refer to THROTTLE BODY ASSEMBLY ). Then,
Repair or replace the connector, repair the damaged harness wire.
 
7.STEP 7. Test the OBD-II drive cycle.
After erasing the DTC, carry out test drive with the drive cycle pattern, and recheck the DTC.
(1) Use scan tool (M.U.T.-III SE) to erase the DTC.
(2) Carry out test drive with the drive cycle pattern (Refer to Diagnostic Function, OBD-II Drive Cycle – Pattern 1 OBD- II DRIVE CYCLE).
(3) Use scan tool (M.U.T.-III SE) to recheck the DTC.
Q: Is DTC P2135-00 set?
Replace the ECM (Refer to ENGINE CONTROL MODULE (ECM) REMOVAL AND INSTALLATION).
The inspection is complete.