Inspection Procedure

HINT:

• The following troubleshooting flowchart is based on the premise that the engine cranks normally. If the engine will not crank, proceed to the problem symptoms table (See PROBLEM SYMPTOMS TABLE ).
• 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 be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

1. READ VALUE USING TECHSTREAM (STARTER SIGNAL) 
   1. Connect the Techstream to the DLC3.
   2. Turn the ignition switch to ON.
   3. Turn the Techstream on.
   4. Enter the following menus: Powertrain / Engine and ECT / Data List / Starter Signal.
   5. Check the value displayed on the Techstream when the ignition switch is turned to the ON and START positions.

   OK 

   IGNITION SWITCH POSITION CHART
   
   

   Ignition Switch Position	Starter Signal
   ON	OFF
   START	ON

   Result 

   RESULT REFERENCE
   
   

   Result	Proceed to
   OK	A
   NG (Manual transaxle Model)	B
   NG (Automatic transaxle Model)	C

   B: Go to step 2 

   C: Go to step  9

   A: CHECK FOR INTERMITTENT PROBLEMS  (See CHECK FOR INTERMITTENT PROBLEMS )

2. READ VALUE USING TECHSTREAM (STARTER SIGNAL) 
   1. Disconnect the clutch pedal switch connector.
   2. Connect Techstream to the DLC3.
   3. Turn the ignition switch to ON.
   4. Turn the Techstream on.
   5. Enter the following menus: Powertrain / Engine and ECT / Data List / Starter Signal.
      Fig 1: Identifying Clutch Pedal Switch Connector Terminal

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   6. Check the value displayed on the Techstream when the ignition switch is turned to ON.

      Result 

      RESULT REFERENCE
      
      

      Starter Signal	Proceed to
      Remains ON	A
      OFF	B

   7. Reconnect the clutch pedal switch connector.

   B: Go to step  5

   A: Go to next step 

3. INSPECT ECM (STA TERMINAL VOLTAGE) 
   1. Disconnect the clutch pedal switch or the park/neutral position switch connector.
   2. Disconnect the ECM connector.
   3. Turn the ignition switch to ON.
   4. Measure the voltage according to the value(s) in the table below.
      Fig 2: Identifying ECM Connector Terminal

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Voltage 

      VOLTAGE SPECIFICATION
      
      

      Tester Connection	Switch Condition	Specified Condition	Proceed to
      STA (A37-48) - Body ground	Ignition switch ON	11 to 14 V	A
      		Below 1.5 V	B

   5. Reconnect the clutch pedal switch or the park/neutral position switch connector.
   6. Reconnect the ECM connector.

   B: REPLACE ECM  (See ECM )

   A: Go to next step 

4. CHECK HARNESS AND CONNECTOR (CLUTCH PEDAL SWITCH - ST RELAY) 
   1. Disconnect the clutch pedal switch connector.
   2. Remove the ST relay from the No. 8 relay block.
   3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Short) 

      RESISTANCE REFERENCE
      
      

      Tester Connection	Condition	Specified Condition
      ST Relay terminal 1 or A4-1 - Body ground	Always	10 kΩ or higher

   4. Reconnect the clutch pedal switch connector.
   5. Reinstall the ST relay.

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (CLUTCH PEDAL SWITCH - ST RELAY) 

   Fig 3: Identifying Clutch Pedal Switch Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - CLUTCH PEDAL SWITCH) 

5. INSPECT CLUTCH PEDAL SWITCH 
   1. Disconnect the clutch pedal switch connector.
   2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      RESISTANCE REFERENCE
      
      

      Tester Connection	Switch Condition	Specified Condition
      1 - 2	OFF (free)	10 kΩ or higher

      Result 

      RESULT REFERENCE
      
      

      Result	Proceed to
      Outside standard range	A
      Within standard range	B

   3. Reconnect the clutch pedal switch connector.

   B: Go to step  7

   Fig 4: Identifying Clutch Pedal Switch Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   A: Go to next step 

6. REPLACE CLUTCH PEDAL SWITCH 
   1. Replace the clutch pedal switch (See CLUTCH PEDAL SWITCH ).
7. INSPECT IGNITION SWITCH 
   1. Remove the ignition switch.
   2. Measure the resistance according to the value(s) in the table below.
      Fig 5: Inspecting Ignition Switch

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance 

      RESISTANCE REFERENCE
      
      

      Tester Connection	Switch Condition	Specified Condition
      All Terminals	LOCK	10 kΩ or higher
      2 (AM1) - 3 (ACC)	ACC	Below 1 Ω
      2 (AM1) - 3 (ACC) - 4 (IG1)	ON
      7 (AM2) - 6 (IG2)
      2 (AM1) - 4 (IG1) - 1 (ST1)	START
      7 (AM2) - 6 (IG2) - 8 (ST2)

   3. Reinstall the ignition switch.

   NG: REPLACE IGNITION SWITCH  (See IGNITION SWITCH )

   OK: Go to next step 

8. CHECK HARNESS AND CONNECTOR (CLUTCH PEDAL SWITCH - ECM) 
   1. Disconnect the ECM connector.
   2. Disconnect the clutch pedal switch connector.
   3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Short) 

      RESISTANCE REFERENCE
      
      

      Tester Connection	Condition	Specified Condition
      A4-1 or A37-48 (STA) - Body ground	Always	10 kΩ or higher

   4. Reconnect the ECM connector.
   5. Reconnect the clutch pedal switch connector.

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (CLUTCH PEDAL SWITCH - ECM) 

   Fig 6: Identifying Clutch Pedal Switch Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION SWITCH - CLUTCH PEDAL SWITCH) 

9. READ VALUE USING TECHSTREAM (STARTER SIGNAL) 
   1. Disconnect the park/neutral position switch connector.
   2. Connect Techstream to the DLC3.
   3. Turn the ignition switch to ON.
   4. Turn the Techstream on.
   5. Enter the following menus: Powertrain / Engine and ECT / Data List / Starter Signal.
   6. Check the value displayed on the Techstream when the ignition switch is turned to ON.

      Result 

      RESULT REFERENCE
      
      

      Starter Signal	Proceed to
      Remains ON	A
      OFF	B

   7. Reconnect the park/neutral position switch connector.

   B: Go to step  12

   Fig 7: Identifying Park/Neutral Position Switch Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   A: Go to next step 

10. INSPECT ECM (STA TERMINAL VOLTAGE) 
    1. Disconnect the clutch pedal switch or the park/neutral position switch connector.
    2. Disconnect the ECM connector.
    3. Turn the ignition switch to ON.
    4. Measure the voltage according to the value(s) in the table below.
       Fig 8: Identifying ECM Connector Terminal

       Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

       Standard Voltage 

       VOLTAGE SPECIFICATION
       
       

       Tester Connection	Switch Condition	Specified Condition	Proceed to
       STA (A37-48) - Body ground	Ignition switch ON	11 to 14 V	A
       		Below 1.5 V	B

    5. Reconnect the clutch pedal switch or the park/neutral position switch connector.
    6. Reconnect the ECM connector.

    B: REPLACE ECM  (See ECM )

    A: Go to next step 

11. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ST RELAY) 
    1. Disconnect the park/neutral position switch connector.
    2. Remove the ST relay from the No. 8 relay block.
    3. Measure the resistance according to the value(s) in the table below.

       Standard Resistance (Check for Short) 

       RESISTANCE REFERENCE
       
       

       Tester Connection	Condition	Specified Condition
       B13-5 - ST Relay terminal 1	Always	10 kΩ or higher

    4. Reconnect the park/neutral position switch connector.
    5. Reinstall the ST relay.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ST RELAY) 

    Fig 9: Identifying Park/Neutral Position Switch Connector Terminal

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - PARK/NEUTRAL POSITION SWITCH) 

12. INSPECT PARK/NEUTRAL POSITION SWITCH 
    1. Disconnect the park/neutral position switch connector.
    2. Measure the resistance according to the value(s) in the table below.

       Standard Resistance (Check for Short) 

       RESISTANCE REFERENCE
       
       

       Tester Connection	Condition	Specified Condition
       4 - 5	Shift lever position except P and N	10 kΩ or higher
       2 - 5	All shift lever positions (P, R, N, D and S)	10 kΩ or higher

       Fig 10: Identifying Park/Neutral Position Switch Connector Terminal

       Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

       Result 

       RESULT REFERENCE
       
       

       Result	Proceed to
       Outside standard range	A
       Within standard range (for 2WD)	B
       Within standard range (for 4WD)	C

    3. Reconnect the park/neutral position switch connector.

    B: REPLACE PARK/NEUTRAL POSITION SWITCH  (See ADJUSTMENT )

    C: REPLACE PARK/NEUTRAL POSITION SWITCH  (See PARK / NEUTRAL POSITION SWITCH )

    A: Go to next step 

13. REPLACE PARK/NEUTRAL POSITION SWITCH 
    1. Replace the park/neutral position switch (See ADJUSTMENT for 2WD, PARK / NEUTRAL POSITION SWITCH for 4WD).
14. INSPECT IGNITION SWITCH 
    1. Remove the ignition switch.
    2. Measure the resistance according to the value(s) in the table below.
       Fig 11: Inspecting Ignition Switch

       Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

       Standard Resistance 

       RESISTANCE REFERENCE
       
       

       Tester Connection	Switch Condition	Specified Condition
       All Terminals	LOCK	10 kΩ or higher
       2 (AM1) - 3 (ACC)	ACC	Below 1 Ω
       2 (AM1) - 3 (ACC) - 4 (IG1)	ON
       7 (AM2) - 6 (IG2)
       2 (AM1) - 4 (IG1) - 1 (ST1)	START
       7 (AM2) - 6 (IG2) - 8 (ST2)

    3. Reinstall the ignition switch.

    NG: REPLACE IGNITION SWITCH 

    OK: Go to next step 

15. INSPECT ECM (NSW TERMINAL VOLTAGE) 
    1. Disconnect the park/neutral position switch connector.
    2. Disconnect the ECM connector.
    3. Turn the ignition switch to ON.
    4. Measure the voltage according to the value(s) in the table below.
       Fig 12: Identifying ECM Connector Terminal

       Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

       Standard Voltage 

       VOLTAGE SPECIFICATION
       
       

       Tester Connection	Switch Condition	Specified Condition	Proceed to
       NSW (B29-52) - Body ground	Ignition switch ON	11 to 14 V	A
       		Below 1.5 V	B

    5. Reconnect the park/neutral position switch connector.
    6. Reconnect the ECM connector.

    B: REPLACE ECM  (See ECM )

    A: Go to next step 

16. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ECM) 
    1. Disconnect the park/neutral position switch connector.
    2. Disconnect the ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

       Standard Resistance (Check for Short) 

       RESISTANCE REFERENCE
       
       

       Tester Connection	Condition	Specified Condition
       B13-5 or A37-48 (STA) - Body ground	Always	10 kΩ or higher

    4. Reconnect the park/neutral position switch connector.
    5. Reconnect the ECM connector.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ECM) 

Fig 13: Identifying Park/Neutral Position Switch Connector Terminal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION SWITCH - PARK/NEUTRAL POSITION SWITCH)