Inspection Procedure

HINT:

• The following troubleshooting flowchart is based on the premise that the engine is cranked normally. If the engine will not crank, proceed to the problem symptoms table in PROBLEM SYMPTOMS TABLE  .
• Read freeze frame data using a hand-held tester or OBD II scan tool. Freeze frame data record the engine condition when malfunctions are detected. 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.

Hand-held tester: 

1. READ VALUE USING HAND-HELD TESTER (STARTER SIGNAL) 
   1. Connect a hand-held tester to the DLC3.
   2. Turn the ignition switch to ON and turn the tester ON.
   3. On the tester, select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / STARTER SIG.
   4. Check the value displayed on the tester when the ignition switch is turned to the ON and START positions.

      OK: 

      IGNITION SWITCH POSITIONS
      
      

      Ignition Switch Positions	ON	START
      STARTER SIG	OFF	ON

   1. OK: REPLACE ECM (See  REPLACEMENT  ) 
   2. NG: Go to next step. 
2. INSPECT PARK/NEUTRAL POSITION SWITCH OR CLUTCH START SWITCH 
   1. Inspect the Park/Neutral Position (PNP) switch. (For A/T models)
      1. Disconnect the A3 PNP switch connector.
      2. Check the resistance when the transmission gear selector lever is moved to each position.

         Standard: 

         PARK/NEUTRAL POSITION SWITCH OR CLUTCH START SWITCH
         
         

         Gear Selector Lever Positions	Tester Connections	Specified Conditions
         P	1 - 3, 6 - 9	Below 1 Ω
         R	2 - 3	Below 1 Ω
         N	3 - 5, 6 - 9	Below 1 Ω
         D	3 - 7	Below 1 Ω
         2	3 - 4	Below 1 Ω
         L	3 - 8	Below 1 Ω

         Fig 1: Inspecting PNP Switch (A/T Models)

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Reconnect the PNP switch connector.
   2. Inspect the clutch start switch. (For M/T models)
      1. Disconnect the C5 clutch start switch connector.
      2. Check the resistance when the clutch start switch is ON and OFF.

         Standard: 

         PARK/NEUTRAL POSITION SWITCH OR CLUTCH START SWITCH
         
         

         Ignition Switch Positions	Tester Connections	Specified Conditions
         ON (pushed)	1 - 2	Below 1 Ω
         OFF (free)	1 - 2	10 kΩ or higher

         Fig 2: Inspecting Clutch Start Switch (M/T Models)

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Reconnect the clutch start switch connector.
   1. NG: REPLACE PARK/NEUTRAL POSITION SWITCH OR CLUTCH START SWITCH (GO TO STEP 3 AFTER REPLACEMENT) 
   2. OK: Go to next step. 
3. READ VALUE USING HAND-HELD TESTER (STARTER SIGNAL) 
   1. Connect the hand-held tester to the DLC3.
   2. Turn the ignition switch to ON and turn the tester ON.
   3. On the tester, select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / STARTER SIG.
   4. Check the value displayed on the tester when the ignition switch is turned to the ON and START positions.

      OK: 

      IGNITION SWITCH POSITIONS
      
      

      Ignition Switch Positions	ON	START
      STARTER SIG	OFF	ON

   1. OK: SYSTEM OK 
   2. NG: Go to next step 
4. INSPECT IGNITION OR STARTER SWITCH ASSY 
   1. Disconnect the I10 ignition switch connector.
   2. Check the resistance.
      IGNITION OR STARTER SWITCH ASSY
      
      

      Switch Position	Tester Connection	Specified Condition
      LOCK	All Terminals	10 kΩ or higher
      ACC	1-3	Below 1 Ω
      ON	1-2, 1-3, 2-3, 5-6	Below 1 Ω
      START	1-2, 4-5, 4-6, 5-6	Below 1 Ω

      Fig 3: Inspecting Ignition Or Starter Switch Assy

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   3. Reconnect the ignition switch connector.
   1. NG: REPLACE IGNITION OR STARTER SWITCH ASSY (GO TO STEP 5 AFTER REPLACEMENT 
   2. OK: Go to next step. 
5. READ VALUE USING HAND-HELD TESTER(STARTER SIGNAL) 
   1. Connect the hand-held tester to the DLC3.
   2. Turn the ignition switch to ON and turn the tester ON.
   3. On the tester, select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / STARTER SIG.
   4. Check the value displayed on the tester when the ignition switch is turned to the ON and START positions.

      Result: 

      IGNITION SWITCH POSITIONS
      
      

      Ignition Switch Positions	ON	START
      STARTER SIG	OFF	ON

   1. OK: SYSTEM OK 
   2. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OBD II scan tool (excluding the hand-held tester): 

1. INSPECT ECM (STA VOLTAGE) 
   1. Turn the ignition switch to ON.
   2. Measure the voltage between the terminals of the E6 ECM connector.

      Standard: 

      ECM (STA VOLTAGE)
      
      

      Tester Connection	Specified Condition
      STA (E6-9) - E1 (E6-7)	0 V

   3. Measure the voltage between the terminals of the E6 ECM connector when the engine is cranked.

      Standard: 

      ECM (STA VOLTAGE)
      
      

      Tester Connections	Specified Condition
      STA (E6-9) - E1 (E6-7)	5.5 V or more

      Fig 4: Inspecting ECM (STA Voltage)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. OK: REPLACE ECM (See  REPLACEMENT  ) 
   2. NG: Go to next step. 
2. INSPECT PARK/NEUTRAL POSITION SWITCH OR CLUTCH START SWITCH 
   1. Inspect the Park/Neutral Position (PNP) switch. (For A/T models)
      1. Disconnect the A3 PNP switch connector.
      2. Check the resistance when the transmission gear selector lever is moved to each position.

         Standard: 

         PARK/NEUTRAL POSITION SWITCH OR CLUTCH START SWITCH
         
         

         Shift Range	Tester Connection	Specified Condition
         P	1 - 3, 6 - 9	Below 1 Ω
         R	2 - 3	Below 1 Ω
         N	3 - 5, 6 - 9	Below 1 Ω
         D	3 - 7	Below 1 Ω
         2	3-4	Below 1 Ω
         L	3 - 8	Below 1 Ω

         Fig 5: Inspecting PNP Switch (A/T Models)

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Reconnect the PNP switch connector
   2. Inspect the clutch start switch. (For M/T models)
      1. Disconnect the C5 clutch start switch connector.
      2. Check the resistance when the clutch start switch is ON and OFF.

         Standard: 

         PARK/NEUTRAL POSITION SWITCH OR CLUTCH START SWITCH
         
         

         Ignition Switch Positions	Tester Connections	Specified Conditions
         ON (pushed)	1 - 2	Below 1 Ω
         OFF (free)	1 - 2	10 kΩ or higher

         Fig 6: Inspecting Clutch Start Switch (M/T Models)

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Reconnect the clutch start switch connector.
   1. NG: REPLACE PARK/NEUTRAL POSITION SWITCH OR CLUTCH START SWITCH (GO TO STEP 3 AFTER REPLACEMENT) 
   2. OK: Go to next step. 
3. INSPECT ECM (STA VOLTAGE) 
   1. Turn the ignition switch to ON.
   2. Measure the voltage between the terminals of the E6 ECM connector.

      Standard: 

      ECM (STA VOLTAGE)
      
      

      Tester Connections	Specified Conditions
      STA (E6-9) - E1 (E6-7)	0V

      Fig 7: Inspecting ECM (STA Voltage)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   3. Measure the voltage between the terminals of the E6 ECM connector when the engine is cranked.

      Standard: 

      TESTER CONNECTIONS RESISTANCE SPECIFIED CONDITION
      
      

      Tester Connections	Specified Conditions
      STA (E6-9) - E1 (E6-7)	5.5 V or more

   1. OK: SYSTEM OK 
   2. NG: Go to next step 
4. INSPECT IGNITION OR STARTER SWITCH ASSY 
   1. Disconnect the I10 ignition switch connector.
   2. Check the resistance.
      IGNITION OR STARTER SWITCH ASSY
      
      

      Ignition Switch Positions	Tester Connections	Specified Conditions
      LOCK	All Terminals	10 kΩ or higher
      ACC	1-3	Below 1 Ω
      ON	1-2, 1-3, 2-3, 5-6	Below 1 Ω
      START	1-2, 4-5, 4-6, 5-6	Below 1 Ω

      Fig 8: Inspecting Ignition Or Starter Switch Assy

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   3. Reconnect the ignition switch connector.
   1. NG: REPLACE IGNITION OR STARTER SWITCH ASSY (GO TO STEP 5 AFTER REPLACEMENT) 
   2. OK: Go to next step. 
5. INSPECT ECM (STA VOLTAGE) 
   1. Turn the ignition switch to ON.
   2. Measure the voltage between the terminals of the E6 ECM connector.

      Standard: 

      ECM (STA VOLTAGE) (E6 ECM CONNECTOR)
      
      

      Tester Connections	Specified Conditions
      STA (E6-9) - E1 (E6-7)	0V

   3. Measure the voltage between the terminals of the E6 ECM connector when the engine is cranked.

      Standard: 

      ECM (STA VOLTAGE) (E6 ECM CONNECTOR WHEN ENGINE IS CRANKED)
      
      

      Tester Connections	Specified Conditions
      STA (E6-9) - E1 (E6-7)	5.5 V or more

      Fig 9: Inspecting ECM (STA Voltage)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. OK: SYSTEM OK 
   2. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR