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Engine Control (Diagnostic Codes (P0607-P2239): Diagnosis Lexus RX III

Testing & Diagnostics 21 illustrations ~8493 words

INSPECTION PROCEDURE

HINT

  1. The following troubleshooting procedure is based on the premise that the engine is cranked normally. If the engine does not crank, proceed to the Problem Symptoms Table. Refer to «PROBLEM SYMPTOMS TABLE»(ref-400784-S08835480482011051800000) .
  2. 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.

Scheme 336

Scheme 336: PROCEDURE
Scheme 336: PROCEDURE
  1. READ VALUE USING TECHSTREAM (STARTER SIGNAL) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Starter Signal. Read the value displayed on the Techstream when the engine switch is turned on (IG) and the engine is started. OK Condition Techstream Display Engine switch on (IG) OFF Engine started ON NG --> See step 2 OK --> See step 3
  2. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY Disconnect the park/neutral position switch assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 4 (B) - 9 (L) Shift lever in P or N Below 1 ohms 4 (B) - 9 (L) Shift lever in any position other than P or N 10 kohms or higher TEXT IN ILLUSTRATION *1 Component without harness connected (Park/Neutral Position Switch Assembly) Reconnect the park/neutral position switch assembly connector. NG --> See step 4 OK --> See step 5
  3. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-400784-S03039419332011051800000)
  4. REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY. Refer to «REMOVAL»(ref-400804-S11330629472011051800000)
  5. GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-400655-S07935767892011051800000)

HINT

  1. The following troubleshooting procedure is based on the premise that the engine is cranked normally. If the engine does not crank, proceed to the Problem Symptoms Table. Refer to «PROBLEM SYMPTOMS TABLE»(ref-400784-S06449390312011051800000) .
  2. 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.

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.

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.

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT

Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may by discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

  1. DATA LIST NOTE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. Warm up the engine. Turn the engine switch off. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / All Data. Read the values displayed on the Techstream. Techstream Display Measurement Item/Range Normal Condition Diagnostic Note Shift SW Status (R Range) Park/neutral position switch assembly status: ON or OFF ON: Shift lever in R OFF: Shift lever not in R When shift lever position displayed on Techstream differs from actual position, adjustment of park/neutral position switch assembly or shift cable may be incorrect Shift SW Status (P Range) Park/neutral position switch assembly status: ON or OFF ON: Shift lever in P OFF: Shift lever not in P When shift lever position displayed on Techstream differs from actual position, adjustment of park/neutral position switch assembly or shift cable may be incorrect Shift SW Status (N Range) Park/neutral position switch assembly status: ON or OFF ON: Shift lever in N OFF: Shift lever not in N When shift lever position displayed on Techstream differs from actual position, adjustment of park/neutral position switch assembly or shift cable may be incorrect Shift SW Status (D Range) Park/neutral position switch assembly status: ON or OFF ON: Shift lever in D or S OFF: Shift lever not in D or S When shift lever position displayed on Techstream differs from actual position, adjustment of park/neutral position switch assembly or shift cable may be incorrect Sports Mode Selection SW Sport mode select switch status: ON or OFF ON: Shift lever in S, "+" or "-" OFF: Shift lever not in S, "+" and "-"

Scheme 337

Scheme 337: PROCEDURE
Scheme 337: PROCEDURE

Scheme 338

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Scheme 341
  1. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / All Data. Read the values displayed on the Techstream. OK Techstream Display Shift Lever Specified Condition Neutral Position SW Signal P or N ON Except P or N OFF Shift SW Status (R Range) R ON Except R OFF Shift SW Status (P Range) P ON Except P OFF Shift SW Status (N Range) N ON Except N OFF Shift SW Status (D Range) D or S ON Except D or S OFF NG --> See step 4 OK: Go to next step
  2. READ VALUE USING TECHSTREAM (SPORTS MODE SELECTION SW) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Sports Mode Selection SW. Read the values displayed on the Techstream. OK Techstream Display Shift Lever Specified Condition Sports Mode Selection SW S ON Except S OFF NG --> See step 3 OK --> See step 8
  3. INSPECT LOWER SHIFT LEVER ASSEMBLY (TRANSMISSION CONTROL SWITCH) Disconnect the transmission control switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 6 (IG) - 13 (S) Shift lever in S, "+" or "-" Below 1 ohms Shift lever in any position other than S, "+" and "-" 10 kohms or higher TEXT IN ILLUSTRATION *1 Component without harness connected (Transmission Control Switch) Reconnect the transmission control switch connector. NG --> See step 9 OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - TRANSMISSION CONTROL SWITCH)
  4. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH ASSEMBLY VOLTAGE) Disconnect the park/neutral position switch assembly connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition D8-1 (RB) - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Park/Neutral Position Switch Assembly) Reconnect the park/neutral position switch assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (PARK/NEUTRAL POSITION SWITCH ASSEMBLY - BATTERY) OK: Go to next step
  5. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY Disconnect the park/neutral position switch assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 (RB) - 3 (PL) 4 (B) - 9 (L) Shift lever in P Below 1 ohms Shift lever in any position other than P 10 kohms or higher 1 (RB) - 2 (RL) Shift lever in R Below 1 ohms Shift lever in any position other than R 10 kohms or higher 1 (RB) - 8 (NL) 4 (B) - 9 (L) Shift lever in N Below 1 ohms Shift lever in any position other than N 10 kohms or higher 1 (RB) - 7 (DL) Shift lever in D or S Below 1 ohms Shift lever in any position other than D and S 10 kohms or higher TEXT IN ILLUSTRATION *1 Component without harness connected (Park/Neutral Position Switch Assembly) Reconnect the park/neutral position switch assembly connector. NG --> See step 10 OK: Go to next step
  6. CHECK HARNESS AND CONNECTOR (ECM - PARK/NEUTRAL POSITION SWITCH ASSEMBLY) Disconnect the ECM connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition D1-2 (P) - Body ground Engine switch on (IG) Shift lever in P 11 to 14 V Engine switch on (IG) Shift lever in any position other than P 0 to 1.5 V D1-26 (R) - Body ground Engine switch on (IG) Shift lever in R 11 to 14 V Engine switch on (IG) Shift lever in any position other than R 0 to 1.5 V D1-25 (N) - Body ground Engine switch on (IG) Shift lever in N 11 to 14 V Engine switch on (IG) Shift lever in any position other than N 0 to 1.5 V D1-27 (D) - Body ground Engine switch on (IG) Shift lever in D or S 11 to 14 V Engine switch on (IG) Shift lever in any position other than D or S 0 to 1.5 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to ECM) Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - PARK/NEUTRAL POSITION SWITCH ASSEMBLY) OK: Go to next step
  7. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH ASSEMBLY - ECM) Disconnect the park/neutral position switch assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition D8-4 (B) - D1-120 (NSW) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition D8-4 (B) or D1-120 (NSW) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Park/Neutral Position Switch Assembly) *2 Front view of wire harness connector (to ECM) Reconnect the ECM connector. Reconnect the park/neutral position switch assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - PARK/NEUTRAL POSITION SWITCH ASSEMBLY) OK --> See step 11
  8. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-400784-S03039419332011051800000)
  9. REPLACE LOWER SHIFT LEVER ASSEMBLY (TRANSMISSION CONTROL SWITCH). Refer to «REMOVAL»(ref-400805-S05666750522011051800000)
  10. REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY. Refer to «REMOVAL»(ref-400805-S22197576732011051800000)
  11. REPLACE ECM. Refer to «REMOVAL»(ref-400788-S26250166532011051800000)

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT

Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may by discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

  1. DATA LIST NOTE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. Warm up the engine. Turn the engine switch off. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / All Data. Read the values displayed on the Techstream. Techstream Display Measurement Item/Range Normal Condition Diagnostic Note Shift SW Status (R Range) Park/neutral position switch assembly status: ON or OFF ON: Shift lever in R OFF: Shift lever not in R When shift lever position displayed on Techstream differs from actual position, adjustment of park/neutral position switch assembly or shift cable may be incorrect Shift SW Status (P Range) Park/neutral position switch assembly status: ON or OFF ON: Shift lever in P OFF: Shift lever not in P When shift lever position displayed on Techstream differs from actual position, adjustment of park/neutral position switch assembly or shift cable may be incorrect Shift SW Status (N Range) Park/neutral position switch assembly status: ON or OFF ON: Shift lever in N OFF: Shift lever not in N When shift lever position displayed on Techstream differs from actual position, adjustment of park/neutral position switch assembly or shift cable may be incorrect Shift SW Status (D Range) Park/neutral position switch assembly status: ON or OFF ON: Shift lever in D or S OFF: Shift lever not in D or S When shift lever position displayed on Techstream differs from actual position, adjustment of park/neutral position switch assembly or shift cable may be incorrect Sports Mode Selection SW Sport mode select switch status: ON or OFF ON: Shift lever in S, "+" or "-" OFF: Shift lever not in S, "+" and "-"

HINT

  1. Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. Reading the Data List information early in troubleshooting is one way to save diagnostic time.
  2. 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.

Scheme 342

Scheme 342: PROCEDURE
Scheme 342: PROCEDURE

Scheme 343

Scheme 343
Scheme 343
  1. READ VALUE USING TECHSTREAM (STOP LIGHT SWITCH) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Stop Light Switch. Read the value displayed on the Techstream when the brake pedal is depressed and released. OK Techstream Display Measurement Item: Range Normal Condition Stop Light Switch Stop light switch assembly status: ON or OFF ON: Brake pedal depressed OFF: Brake pedal released NG --> See step 2 OK --> See step 4
  2. INSPECT STOP LIGHT SWITCH ASSEMBLY Disconnect the stop light switch assembly connector. Remove the stop light switch assembly. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Position Specified Condition 1 - 2 Switch pin not pushed Below 1 ohms Switch pin pushed 10 kohms or higher 3 - 4 Switch pin not pushed 10 kohms or higher Switch pin pushed Below 1 ohms Reinstall the stop light switch assembly. Reconnect the stop light switch assembly connector. NG --> See step 5 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (ECM - STOP LIGHT SWITCH ASSEMBLY) Disconnect the ECM connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition A43-36 (STP) - Body ground Brake pedal depressed 7.5 to 14 V A43-36 (STP) - Body ground Brake pedal released 0 to 1.5 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to ECM) Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - STOP LIGHT SWITCH ASSEMBLY) OK --> See step 6
  4. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-400784-S03039419332011051800000)
  5. REPLACE STOP LIGHT SWITCH ASSEMBLY. Refer to «REMOVAL»(ref-400664-S28919321902011051800000)
  6. REPLACE ECM. Refer to «REMOVAL»(ref-400788-S26250166532011051800000)

HINT

  1. Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. Reading the Data List information early in troubleshooting is one way to save diagnostic time.
  2. 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.

HINT

  1. 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.
  2. The throttle actuator current (Throttle Motor Current) and the throttle actuator duty ratio (Throttle Motor Duty (Open) / Throttle Motor Duty (Close)) can be read using the Techstream. However, the ECM shuts off the throttle actuator current when the electronic throttle control system malfunctions.

Scheme 344

Scheme 344: PROCEDURE
Scheme 344: PROCEDURE

Scheme 345

Scheme 345
Scheme 345
  1. INSPECT THROTTLE WITH MOTOR BODY ASSEMBLY (RESISTANCE OF THROTTLE ACTUATOR) Disconnect the throttle with motor body assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2 (M+) - 1 (M-) 20°C (68°F) 0.3 to 100 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Throttle with Motor Body Assembly) Reconnect the throttle with motor body assembly connector. NG --> See step 5 OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (THROTTLE WITH MOTOR BODY ASSEMBLY - ECM) Disconnect the throttle with motor body assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition D28-2 (M+) - D1-19 (M+) Always Below 1 ohms D28-1 (M-) - D1-18 (M-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition D28-2 (M+) or D1-19 (M+) - Body ground Always 10 kohms or higher D28-1 (M-) or D1-18 (M-) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Throttle with Motor Body Assembly) *2 Front view of wire harness connector (to ECM) Reconnect the ECM connector. Reconnect the throttle with motor body assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (THROTTLE WITH MOTOR BODY ASSEMBLY - ECM) OK: Go to next step
  3. INSPECT THROTTLE WITH MOTOR BODY ASSEMBLY (VISUALLY CHECK THROTTLE VALVE) Check for foreign objects between the throttle valve and the housing. OK No foreign objects between throttle valve and housing. NG --> REMOVE FOREIGN OBJECT AND CLEAN THROTTLE WITH MOTOR BODY ASSEMBLY OK: Go to next step
  4. INSPECT THROTTLE WITH MOTOR BODY ASSEMBLY (THROTTLE VALVE) Check if the throttle valve opens and closes smoothly. OK Throttle valve opens and closes smoothly. NG --> See step 5 OK --> See step 6
  5. REPLACE THROTTLE WITH MOTOR BODY ASSEMBLY. Refer to «REMOVAL»(ref-400788-S10183594902011051800000)
  6. REPLACE ECM. Refer to «REMOVAL»(ref-400788-S26250166532011051800000)

HINT

  1. 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.
  2. The throttle actuator current (Throttle Motor Current) and the throttle actuator duty ratio (Throttle Motor Duty (Open) / Throttle Motor Duty (Close)) can be read using the Techstream. However, the ECM shuts off the throttle actuator current when the electronic throttle control system malfunctions.

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.

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.

Note. Inspect the fuses for circuit related to this system before performing the following inspection 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.

Scheme 346

Scheme 346: PROCEDURE
Scheme 346: PROCEDURE
  1. READ VALUE USING TECHSTREAM (+BM VOLTAGE) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / +BM voltage. Read the value displayed on the Techstream. Standard Voltage 11 to 14 V NG --> See step 2 OK --> See step 3
  2. CHECK HARNESS AND CONNECTOR (ECM - BATTERY, BODY GROUND) Disconnect the ECM connectors. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition D1-41 (+BM) - Body ground Always 11 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to ECM) Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition D1-82 (ME01) - Body ground Always Below 1 ohms D1-81 (E1) - Body ground Always Below 1 ohms Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - BATTERY, BODY GROUND) OK --> See step 4
  3. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-400784-S03039419332011051800000)
  4. REPLACE ECM. Refer to «REMOVAL»(ref-400788-S26250166532011051800000)

Note. Inspect the fuses for circuit related to this system before performing the following inspection 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.

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.

Scheme 347

Scheme 347: PROCEDURE
Scheme 347: PROCEDURE
  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2119) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the DTCs. Result Result Proceed to DTC P2119 is output A DTC P2119 and other DTCs are output B HINT: If any DTCs other than P2119 are output, troubleshoot those DTCs first. B --> See step 5 A: Go to next step
  2. INSPECT THROTTLE WITH MOTOR BODY ASSEMBLY (RESISTANCE OF THROTTLE ACTUATOR) Disconnect the throttle with motor body assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2 (M+) - 1 (M-) 20°C (68°F) 0.3 to 100 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Throttle with Motor Body Assembly) Reconnect the throttle with motor body assembly connector. NG --> See step 6 OK: Go to next step
  3. REPLACE ECM Replace the ECM. Refer to «REMOVAL»(ref-400788-S26250166532011051800000) . NEXT: Go to next step
  4. CHECK WHETHER DTC OUTPUT RECURS (DTC P2119) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-400784-S05337578742011051800000) . Allow the engine to idle for 15 seconds or more. Fully depress and release the accelerator pedal several times quickly. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the DTCs. HINT: The output voltage of the throttle position sensor can be checked using the Techstream. Variations in the output voltage indicate that the throttle actuator is in operation. To check the output voltage using the Techstream, enter the following menus: Powertrain / Engine / Data List / Throttle Position No. 1. Result Result Proceed to DTC is not output A DTC P2119 is output B B --> See step 6 A --> END
  5. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-400784-S08158320572011051800000)
  6. REPLACE THROTTLE WITH MOTOR BODY ASSEMBLY. Refer to «REMOVAL»(ref-400788-S10183594902011051800000)

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.

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.

Scheme 348

Scheme 348: PROCEDURE
Scheme 348: PROCEDURE

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Scheme 350
  1. READ VALUE USING TECHSTREAM (ACCEL SENSOR OUT NO. 1 AND ACCEL SENSOR OUT NO. 2) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Accel Sensor Out No. 1 and Accel Sensor Out No. 2. Read the values displayed on the Techstream. Standard Voltage Accelerator Pedal Operation Accel Sensor Out No. 1 Accel Sensor Out No. 2 Released 0.5 to 1.1 V 1.2 to 2.0 V Depressed 2.6 to 4.5 V 3.4 to 4.8 V NG --> See step 2 OK --> See step 8
  2. CHECK HARNESS AND CONNECTOR (ACCELERATOR PEDAL SENSOR ASSEMBLY - ECM) Disconnect the accelerator pedal sensor assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition A46-6 (VPA) - A43-55 (VPA) Always Below 1 ohms A46-5 (EPA) - A43-58 (EPA) Always Below 1 ohms A46-4 (VCPA) - A43-57 (VCPA) Always Below 1 ohms A46-3 (VPA2) - A43-56 (VPA2) Always Below 1 ohms A46-2 (EPA2) - A43-60 (EPA2) Always Below 1 ohms A46-1 (VCP2) - A43-59 (VCP2) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition A46-6 (VPA) or A43-55 (VPA) - Body ground Always 10 kohms or higher A46-5 (EPA) or A43-58 (EPA) - Body ground Always 10 kohms or higher A46-4 (VCPA) or A43-57 (VCPA) - Body ground Always 10 kohms or higher A46-3 (VPA2) or A43-56 (VPA2) - Body ground Always 10 kohms or higher A46-2 (EPA2) or A43-60 (EPA2) - Body ground Always 10 kohms or higher A46-1 (VCP2) or A43-59 (VCP2) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Accelerator Pedal Sensor Assembly) *2 Front view of wire harness connector (to ECM) Reconnect the accelerator pedal sensor assembly connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (ACCELERATOR PEDAL SENSOR ASSEMBLY - ECM) OK: Go to next step
  3. INSPECT ECM (VCPA AND VCP2 VOLTAGE) Disconnect the accelerator pedal sensor assembly connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition A46-4 (VCPA) - A46-5 (EPA) Engine switch on (IG) 4.5 to 5.5 V A46-1 (VCP2) - A46-2 (EPA2) Engine switch on (IG) 4.5 to 5.5 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Accelerator Pedal Sensor Assembly) Reconnect the accelerator pedal sensor assembly connector. NG --> See step 6 OK: Go to next step
  4. REPLACE ACCELERATOR PEDAL SENSOR ASSEMBLY Replace the accelerator pedal sensor assembly. Refer to «REMOVAL»(ref-400788-S22677338542011051800000) . NEXT: Go to next step
  5. CHECK WHETHER DTC OUTPUT RECURS (ACCELERATOR PEDAL SENSOR ASSEMBLY DTCS) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-400784-S05337578742011051800000) . Turn the engine switch off. Turn the engine switch on (IG) and turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine / Utility / All Readiness. Input the DTC: P2120, P2122, P2123, P2125, P2127, P2128 or P2138. Check the DTC judgment result. Result Result Proceed to NORMAL (DTC is not output) A ABNORMAL (DTC P2120, P2122, P2123, P2125, P2127, P2128 or P2138 is output) B B --> See step 7 A --> END
  6. REPLACE ECM. Refer to «REMOVAL»(ref-400788-S26250166532011051800000)
  7. REPLACE ECM. Refer to «REMOVAL»(ref-400788-S26250166532011051800000)
  8. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-400784-S03039419332011051800000)

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.

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.

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.

HINT

Malfunctioning areas can be identified by performing the Control the Injection Volume for A/F Sensor function provided in the Active Test. The Control the Injection Volume for A/F Sensor function can help to determine whether the air fuel ratio sensor, heated oxygen sensor and other potential trouble areas are malfunctioning.

The following instructions describe how to conduct the Control the Injection Volume for A/F Sensor operation using the Techstream.

  1. Connect the Techstream to the DLC3.
  2. Start the engine.
  3. Turn the Techstream on.
  4. Warm up the engine at an engine speed of 2500 rpm for approximately 90 seconds.
  5. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor.
  6. Perform the Active Test operation with the engine idling (press the RIGHT or LEFT button to change the fuel injection volume).
  7. Monitor the output voltages of the air fuel ratio and heated oxygen sensors (AFS Voltage B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2) displayed on the Techstream.

HINT

  1. The Control the Injection Volume for A/F Sensor operation lowers the fuel injection volume by 12.5% or increases the injection volume by 25%.
  1. Each sensor reacts in accordance with increases in the fuel injection volume.
Techstream Display (Sensor)Injection VolumeStatusVoltage
AFS Voltage B1S1 or AFS Voltage B2S1 (Air fuel ratio)+25%RichLess than 3.1 V
AFS Voltage B1S1 or AFS Voltage B2S1 (Air fuel ratio)12.5%LeanMore than 3.4 V
O2S B1S2 or O2S B2S2 (Heated oxygen)+25%RichMore than 0.55 V
O2S B1S2 or O2S B2S2 (Heated oxygen)12.5%LeanLess than 0.4 V

Note. The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds.

Case Air Fuel Ratio Sensor (Sensor 1) Output Voltage Heated Oxygen Sensor (Sensor 2) Output Voltage Main Suspected Trouble Area 1 - 2 Air fuel ratio sensor Air fuel ratio sensor heater Air fuel ratio sensor circuit 3 Heated oxygen sensor Heated oxygen sensor heater Heated oxygen sensor circuit Exhaust gas leaks 4 Fuel pressure Exhaust gas leaks (Air fuel ratio extremely lean or rich)

Scheme 351

Scheme 351
Scheme 351

Scheme 352

Scheme 352
Scheme 352

Scheme 353

Scheme 353
Scheme 353
  1. Following the Control the Injection Volume for A/F Sensor procedure enables technicians to check and graph the voltage outputs of both the air fuel ratio and heated oxygen sensors.
  2. To display the graph, enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor / A/F Control System / AFS Voltage B1S1 or AFS Voltage B2S1 and O2S B1S2 or O2S B2S2.

HINT

  1. 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.
  2. A low air fuel ratio sensor voltage could be caused by a rich air fuel mixture. Check for conditions that would cause the engine to run rich.
  3. A high air fuel ratio sensor voltage could be caused by a lean air fuel mixture. Check for conditions that would cause the engine to run lean.

Scheme 354

Scheme 354: PROCEDURE
Scheme 354: PROCEDURE

Scheme 355

Scheme 355
Scheme 355

Scheme 356

Scheme 356
Scheme 356
  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO P2195, P2196, 2197 OR P2198) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the DTCs. Result Result Proceed to DTC P2195, P2196, P2197, or P2198 is output A DTC P2195, P2196, P2197, or P2198 and other DTCs are output B HINT: If any DTCs other than P2195, P2196, P2197 or P2198 are output, troubleshoot those DTCs first. B --> See step 19 A: Go to next step
  2. CONFIRM IF VEHICLE HAS RUN OUT OF FUEL IN PAST Has the vehicle run out of fuel in the past? NO --> See step 4 YES: Go to next step
  3. PERFORM CONFIRMATION DRIVING PATTERN Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-400784-S05337578742011051800000). Turn the engine switch off. Turn the engine switch on (IG) and turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine / Utility / All Readiness. Input the DTC: P2195, P2196, P2197 or P2198. Check the DTC judgment result. Result Result Proceed to NORMAL (DTC is not output) A ABNORMAL (DTC P2195, P2196, P2197 or P2198 is output) B B --> See step 4 A --> DTC CAUSED BY RUNNING OUT OF FUEL
  4. READ VALUE USING TECHSTREAM (TEST VALUE OF AIR FUEL RATIO SENSOR) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-400784-S05337578742011051800000). Allow the vehicle to drive in accordance with the driving pattern described in the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine / Monitor / O2 Sensor. Check that the status of O2 Sensor is Complete. If the status is still Incomplete, drive the vehicle according to the driving pattern again. Enter the following menus: Powertrain / Engine / Monitor / O2 Sensor / Details / RANGE B1S1 or RANG B2S1 / Details. Check the test value of the air fuel ratio sensor output current during fuel cut. Result Test Value Proceed to Within normal range (1.4 mA or more, and less than 3.6 mA) A Outside normal range (Less than 1.4 mA, or 3.6 mA or more) B B --> See step 16 A: Go to next step
  5. READ VALUE USING TECHSTREAM (OUTPUT VOLTAGE OF AIR FUEL RATIO SENSOR) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Warm up the air fuel ratio sensor at an engine speed of 2500 rpm for 90 seconds. Enter the following menus: Powertrain / Engine / Data List / A/F Control System / AFS Voltage B1S1 or AFS Voltage B2S1 and Engine Speed. Check the air fuel ratio sensor voltage 3 times, when the engine is in each of the following conditions: While idling (check for at least 30 seconds) (Step "A") At an engine speed of approximately 2500 rpm (without any sudden changes in engine speed) (Step "B") The engine speed is raised to 4000 rpm and then the accelerator pedal is quickly released so that the throttle valve is fully closed (Step "C"). Standard Condition Air Fuel Ratio Sensor Voltage Variation Reference Step "A" and "B" Changes at approximately 3.3 V Between 3.1 V and 3.4 V Step "C" Increases to 3.8 V or more This occurs during engine deceleration (when fuel cut performed) HINT: For more information, see the diagrams below. If the output voltage of the air fuel ratio sensor remains at approximately 3.3 V (see Malfunction Condition diagram above) under any conditions, including those above, the air fuel ratio sensor may have an open circuit. (This will also happen if the air fuel ratio sensor heater has an open circuit.) If the output voltage of the air fuel ratio sensor remains at either approximately 3.8 V or more, or 2.8 V or less (see Malfunction Condition diagram (Scheme 351) ) under any conditions, including those above, the air fuel ratio sensor may have a short circuit. The ECM stops fuel injection (fuel cut) during engine deceleration. This causes a lean condition and results in a momentary increase in the air fuel ratio sensor output voltage. The ECM must establish a closed throttle valve position learning value to perform fuel cut. If the battery terminal has been reconnected, the vehicle must be driven over 10 mph (16 km/h) to allow the ECM to learn the closed throttle valve position. When the vehicle is driven: The output voltage of the air fuel ratio sensor may be below 2.8 V during fuel enrichment. For the vehicle, this translates to a sudden increase in speed with the accelerator pedal fully depressed when trying to overtake another vehicle. The air fuel ratio sensor is functioning normally. The air fuel ratio sensor is a current output element; therefore, the current is converted into a voltage inside the ECM. Measuring the voltage at the connectors of the air fuel ratio sensor or ECM will show a constant voltage result. NG --> See step 9 OK: Go to next step
  6. PERFORM CONFIRMATION DRIVING PATTERN Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-400784-S05337578742011051800000). Turn the engine switch off. Turn the engine switch on (IG) and turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine / Utility / All Readiness. Input the DTC: P2195, P2196, P2197 or P2198. Check the DTC judgment result. Result Result Proceed to NORMAL (DTC is not output) A ABNORMAL (DTC P2195, P2196, P2197 or P2198 is output) B B --> See step 7 A --> See step 20
  7. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL»(ref-400788-S16324759872011051800000). NEXT: Go to next step
  8. PERFORM CONFIRMATION DRIVING PATTERN Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-400784-S05337578742011051800000). Turn the engine switch off. Turn the engine switch on (IG) and turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine / Utility / All Readiness. Input the DTC: P2195, P2196, P2197 or P2198. Check the DTC judgment result. Result Result Proceed to NORMAL (DTC is not output) A ABNORMAL (DTC P2195, P2196, P2197 or P2198 is output) B B --> See step 21 A --> END
  9. INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE) Disconnect the air fuel ratio sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 (HA1A) - 2 (+B) 20°C (68°F) 1.8 to 3.4 ohms 1 (HA1A) - 4 (A1A-) Always 10 kohms or higher 1 (HA2A) - 2 (+B) 20°C (68°F) 1.8 to 3.4 ohms 1 (HA2A) - 4 (A2A-) Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Component without harness connected (Air Fuel Ratio Sensor) *2 Bank 1 *3 Bank 2 Reconnect the air fuel ratio sensor connector. NG --> See step 22 OK: Go to next step
  10. CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM) Disconnect the air fuel ratio sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition D20-1 (HA1A) - D1-22 (HA1A) Always Below 1 ohms D20-3 (A1A+) - D1-126 (A1A+) Always Below 1 ohms D20-4 (A1A-) - D1-125 (A1A-) Always Below 1 ohms D19-1 (HA2A) - D1-20 (HA2A) Always Below 1 ohms D19-3 (A2A+) - D1-103 (A2A+) Always Below 1 ohms D19-4 (A2A-) - D1-102 (A2A-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition D20-1 (HA1A) or D1-22 (HA1A) - Body ground Always 10 kohms or higher D20-3 (A1A+) or D1-126 (A1A+) - Body ground Always 10 kohms or higher D20-4 (A1A-) or D1-125 (A1A-) - Body ground Always 10 kohms or higher D19-1 (HA2A) or D1-20 (HA2A) - Body ground Always 10 kohms or higher D19-3 (A2A+) or D1-103 (A2A+) - Body ground Always 10 kohms or higher D19-4 (A2A-) or D1-102 (A2A-) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Air Fuel Ratio Sensor) *2 Front view of wire harness connector (to ECM) *3 Bank 1 *4 Bank 2 Reconnect the ECM connector. Reconnect the air fuel ratio sensor connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (AIR FUEL RATIO SENSOR - ECM) OK: Go to next step
  11. CHECK INTAKE SYSTEM Check the intake system for vacuum leaks. Refer to «ON-VEHICLE INSPECTION»(ref-400792-S33062746192011051800000). OK No leaks in intake system. NG --> REPAIR OR REPLACE INTAKE SYSTEM OK: Go to next step
  12. CHECK FUEL PRESSURE Check the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-400801-S28367752752011051800000). NG --> See step 18 OK: Go to next step
  13. INSPECT FUEL INJECTOR ASSEMBLY Check the fuel injector assembly (whether fuel volume is high or low, and whether injector pattern is poor). Refer to «INSPECTION»(ref-400791-S21918100082011051800000). NG --> See step 23 OK: Go to next step
  14. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL»(ref-400788-S16324759872011051800000). NEXT: Go to next step
  15. PERFORM CONFIRMATION DRIVING PATTERN Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-400784-S05337578742011051800000). Turn the engine switch off. Turn the engine switch on (IG) and turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine / Utility / All Readiness. Input the DTC: P2195, P2196, P2197 or P2198. Check the DTC judgment result. Result Result Proceed to NORMAL (DTC is not output) A ABNORMAL (DTC P2195, P2196, P2197 or P2198 is output) B B --> See step 21 A --> END
  16. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL»(ref-400788-S16324759872011051800000). NEXT: Go to next step
  17. PERFORM CONFIRMATION DRIVING PATTERN Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-400784-S05337578742011051800000). Turn the engine switch off. Turn the engine switch on (IG) and turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine / Utility / All Readiness. Input the DTC: P2195, P2196, P2197 or P2198. Check the DTC judgment result. Result Result Proceed to NORMAL (DTC is not output) A ABNORMAL (DTC P2195, P2196, P2197 or P2198 is output) B B --> See step 21 A --> END
  18. CHECK FUEL LINE Check the fuel lines for leaks or blockage. NG --> REPAIR OR REPLACE FUEL LINE OK --> See step 24
  19. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-400784-S08158320572011051800000)
  20. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-400784-S03039419332011051800000)
  21. REPLACE ECM. Refer to «REMOVAL»(ref-400788-S26250166532011051800000)
  22. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-400788-S16324759872011051800000)
  23. REPLACE FUEL INJECTOR ASSEMBLY. Refer to «REMOVAL»(ref-400791-S26062819322011051800000)
  24. REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-400791-S26326872392011051800000)

HINT

Malfunctioning areas can be identified by performing the Control the Injection Volume for A/F Sensor function provided in the Active Test. The Control the Injection Volume for A/F Sensor function can help to determine whether the air fuel ratio sensor, heated oxygen sensor and other potential trouble areas are malfunctioning.

The following instructions describe how to conduct the Control the Injection Volume for A/F Sensor operation using the Techstream.

  1. Connect the Techstream to the DLC3.
  2. Start the engine.
  3. Turn the Techstream on.
  4. Warm up the engine at an engine speed of 2500 rpm for approximately 90 seconds.
  5. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor.
  6. Perform the Active Test operation with the engine idling (press the RIGHT or LEFT button to change the fuel injection volume).
  7. Monitor the output voltages of the air fuel ratio and heated oxygen sensors (AFS Voltage B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2) displayed on the Techstream.

HINT

  1. The Control the Injection Volume for A/F Sensor operation lowers the fuel injection volume by 12.5% or increases the injection volume by 25%.
  1. Each sensor reacts in accordance with increases in the fuel injection volume.
Techstream Display (Sensor)Injection VolumeStatusVoltage
AFS Voltage B1S1 or AFS Voltage B2S1 (Air fuel ratio)+25%RichLess than 3.1 V
AFS Voltage B1S1 or AFS Voltage B2S1 (Air fuel ratio)12.5%LeanMore than 3.4 V
O2S B1S2 or O2S B2S2 (Heated oxygen)+25%RichMore than 0.55 V
O2S B1S2 or O2S B2S2 (Heated oxygen)12.5%LeanLess than 0.4 V

Note. The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds.

Case Air Fuel Ratio Sensor (Sensor 1) Output Voltage Heated Oxygen Sensor (Sensor 2) Output Voltage Main Suspected Trouble Area 1 - 2 Air fuel ratio sensor Air fuel ratio sensor heater Air fuel ratio sensor circuit 3 Heated oxygen sensor Heated oxygen sensor heater Heated oxygen sensor circuit Exhaust gas leaks 4 Fuel pressure Exhaust gas leaks (Air fuel ratio extremely lean or rich)

  1. Following the Control the Injection Volume for A/F Sensor procedure enables technicians to check and graph the voltage outputs of both the air fuel ratio and heated oxygen sensors.
  2. To display the graph, enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor / A/F Control System / AFS Voltage B1S1 or AFS Voltage B2S1 and O2S B1S2 or O2S B2S2.

HINT

  1. 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.
  2. A low air fuel ratio sensor voltage could be caused by a rich air fuel mixture. Check for conditions that would cause the engine to run rich.
  3. A high air fuel ratio sensor voltage could be caused by a lean air fuel mixture. Check for conditions that would cause the engine to run lean.

HINT

Malfunctioning areas can be identified by performing the Control the Injection Volume for A/F Sensor in the Active Test. The Control the Injection Volume for A/F Sensor function can help to determine whether the air fuel ratio sensor, heated oxygen sensor and other potential trouble areas are malfunctioning.

The following instructions describe how to conduct the Control the Injection Volume for A/F Sensor operation using the Techstream.

  1. Connect the Techstream to the DLC3.
  2. Start the engine.
  3. Turn the Techstream on.
  4. Warm up the engine at 2500 rpm for approximately 90 seconds.
  5. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor.
  6. Perform Active Test operation with the engine idling (press the RIGHT or LEFT button to change the fuel injection volume).
  7. Monitor the output voltages of the air fuel ratio and heated oxygen sensors (AFS Voltage B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2) displayed on the Techstream.

HINT

  1. The Control the Injection Volume for A/F Sensor operation lowers the fuel injection volume by 12.5% or increases the injection volume by 25%.
  1. Each sensor reacts in accordance with increases and decreases in the fuel injection volume.
Techstream Display (Sensor)Injection VolumeStatusVoltage
AFS Voltage B1S1 or AFS Voltage B2S1 (Air fuel ratio)+25%RichLess than 3.1 V
AFS Voltage B1S1 or AFS Voltage B2S1 (Air fuel ratio)12.5%LeanMore than 3.4 V
O2S B1S2 or O2S B2S2 (Heated oxygen)+25%RichMore than 0.55 V
O2S B1S2 or O2S B2S2 (Heated oxygen)12.5%LeanLess than 0.4 V

Note. The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds.

Case Air Fuel Ratio Sensor (Sensor 1) Output Voltage Heated Oxygen Sensor (Sensor 2) Output Voltage Main Suspected Trouble Area 1 - 2 Air fuel ratio sensor Air fuel ratio sensor heater Air fuel ratio sensor circuit 3 Heated oxygen sensor Heated oxygen sensor heater Heated oxygen sensor circuit Exhaust gas leaks 4 Fuel pressure Exhaust gas leaks (Air fuel ratio extremely lean or rich)

  1. Performing Control the Injection Volume for A/F Sensor enables technicians to check and graph the output voltages of both the air fuel ratio and heated oxygen sensors.
  2. To display the graph, enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor / AFS Voltage B1S1 and O2S B2S1 or AFS Voltage B1S2 and O2S B2S2.

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.

More articles — Engine Control (Diagnostic Codes (P0607-P2239)