Inspection Procedure

HINT:

• The following troubleshooting flowchart is based on the premise that the engine is cranked normally. If the engine does not crank, proceed to the PROBLEM SYMPTOMS TABLE  .
• Read freeze frame data using the intelligent tester. 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 INTELLIGENT TESTER (STARTER SIGNAL) 
   1. Connect the intelligent tester to the DLC3.
   2. Turn the ignition switch to the ON position and turn the tester on.
   3. Enter the following menus: 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 

      DTC OUTPUT RESULT
      
      

      Ignition Switch Position	STARTER SIG
      ON	OFF
      START	ON

   OK: REPLACE ECM 

   NG: go to next step 

2. INSPECT PARK/NEUTRAL POSITION SWITCH OR CLUTCH PEDAL SWITCH 
   1. Inspect the Park/Neutral Position (PNP) switch (for A/T models).
      Fig 1: Identifying Park/Neutral Position Switch Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Disconnect the P1 PNP switch connector.
      2. Measure the resistance when the transmission gear selector lever is moved to each position.

         Standard resistance 

         RESISTANCE SPECIFIED CONDITIONS
         
         

         Gear Selector Lever Position	Tester Connection	Specified Condition
         P	2 - 6, 4 - 5	Below 1 Ω
         R	1 - 2	Below 1 Ω
         N	2 - 9, 4 - 5	Below 1 Ω
         D	2 - 7	Below 1 Ω
         2	2 - 3	Below 1 Ω
         L	2 - 8	Below 1 Ω

   2. Inspect the clutch pedal switch (for M/T models).
      1. Disconnect the C5 clutch pedal switch connector.
      Fig 2: Identifying Clutch Pedal Switch (M/T Models)
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Measure the resistance when the clutch pedal switch is ON and OFF.

         Standard resistance 

         RESISTANCE SPECIFIED CONDITIONS
         
         

         Switch Position	Tester Connection	Specified Condition
         ON (pushed)	1 - 2	Below 1 Ω
         OFF (free)	1 - 2	10 kΩ or higher

   NG: REPLACE PARK/NEUTRAL POSITION SWITCH OR CLUTCH PEDAL SWITCH (GO TO NEXT STEP AFTER REPLACEMENT) 

   OK: go to next step 

3. READ VALUE USING INTELLIGENT TESTER (STARTER SIGNAL) 
   1. Connect the intelligent tester to the DLC3.
   2. Turn the ignition switch to the ON position and turn the tester on.
   3. Enter the following menus: 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 

      DTC OUTPUT RESULT
      
      

      Ignition Switch Position	STARTER SIG
      ON	OFF
      START	ON

   OK: SYSTEM OK 

   NG: go to next step 

4. INSPECT IGNITION OR STARTER SWITCH ASSEMBLY 
   1. Disconnect the 15 ignition switch connector.
   Fig 3: Identifying Ignition Switch Connector Terminals
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      RESISTANCE SPECIFIED CONDITIONS
      
      

      Switch Position	Tester Connection	Specified Condition
      LOCK	All Terminals	10 kΩ or higher
      START	ST1 (1) - AM1 (2) ST2 (8) - AM2 (7)	Below 1 Ω

   NG: REPLACE IGNITION OR STARTER SWITCH ASSEMBLY (GO TO NEXT STEP AFTER REPLACEMENT) 

   OK: go to next step 

5. READ VALUE USING INTELLIGENT TESTER (STARTER SIGNAL) 
   1. Connect the intelligent tester to the DLC3.
   2. Turn the ignition switch to the ON position and turn the tester on.
   3. Enter the following menus: 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 

      DTC OUTPUT RESULT
      
      

      Ignition Switch Position	STARTER SIG
      ON	OFF
      START	ON

   OK: SYSTEM OK 

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR