Inspection Procedure

HINT:

Read freeze frame data using the intelligent tester or the OBD II scan tool. 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 running or stopped, 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.

When using intelligent tester: 

1. READ INTELLIGENT TESTER (STARTER SIGNAL) 
   1. Connect the intelligent tester to the DLC3.
   2. Turn the ignition switch ON and push the intelligent tester main switch ON.
   3. On the intelligent tester, enter the following menus:

      DIAGNOSIS/ENHANCED OBD II/DATA LIST/ALL/STARTER SIG. Read the values.

      Result 

      STARTER SIGNAL
      
      

      Ignition Switch Condition	ON	START
      STA Signal	OFF	ON

   OK: REPLACE ECM 

   NG: GO TO NEXT STEP 

2. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY 

   OK: 

   • When shift lever is the N position, the PNP switch is ON. 
   • When shift lever is the D position, the PNP switch is OFF. 

   NG: REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY (GO TO NEXT STEP 3 AFTER REPLACEMENT) 

   OK: GO TO NEXT STEP 

3. READ VALUE OF INTELLIGENT TESTER (STA SIGNAL) 
   1. Connect the intelligent tester to the DLC3.
   2. Turn the ignition switch ON and push the intelligent tester main switch ON.
   3. On the intelligent tester, enter the following menus:

      DIAGNOSIS/ENHANCED OBD II/DATA LIST/ALL/STARTER SIG. Read the values.

      Result 

      STA SIGNAL
      
      

      Ignition Switch Condition	ON	START
      STA Signal	OFF	ON

   OK: CHECK SYSTEM OK 

   NG: GO TO NEXT STEP 

4. INSPECT IGNITION OR STARTER SWITCH ASSEMBLY 
   1. Measure the resistance of the ignition switch terminals.

      Resistance 

      IGNITION OR STARTER SWITCH ASSEMBLY
      
      

      Switch Condition	Tester connection	Specified Condition
      LOCK	1 - 2 7 - 8	10 k ohms or higher
      START	1 - 2 7 - 8	Below 1 ohms

      Fig 1: Inspecting Ignition Or Starter Switch Assembly

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPLACE IGNITION OR STARTER SWITCH ASSEMBLY (GO TO STEP 5 AFTER REPLACEMENT) 

   OK: GO TO NEXT STEP 

5. READ VALUE OF INTELLIGENT TESTER (STA SIGNAL) 
   1. Connect the intelligent tester to the DLC3.
   2. Turn the ignition switch ON and push the intelligent tester main switch ON.
   3. On the intelligent tester, enter the following menus:

      DIAGNOSIS/ENHANCED OBD II/DATA LIST/ALL/STARTER SIG. Read the values.

      Result 

      STA SIGNAL
      
      

      Ignition Switch Condition	ON	START
      STA Signal	OFF	ON

   OK: CHECK SYSTEM OK 

   NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

When Using OBD II Scan Tool: 

1. CHECK ECM (STA VOLTAGE) 
   1. Turn the ignition switch ON.
   2. Measure the voltage of the ECM connectors.

      Voltage 

      ECM (STA VOLTAGE)
      
      

      Tester connection	Condition Specified	Condition
      E8-17 (STA) - E6-1 (E1)	Ignition switch ON	0 V
      E8-17 (STA) - E6-1 (E1)	Engine cranking	6 V or more

      Fig 2: Checking ECM (STA Voltage)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK: REPLACE ECM 

   NG: GO TO NEXT STEP 

2. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY 

   OK: 

   • When shift lever is the N position, the PNP switch is ON. 
   • When shift lever is the D position, the PNP switch is OFF. 

   NG: REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY (GO TO NEXT STEP 3 AFTER REPLACEMENT) 

   OK: GO TO NEXT STEP 

3. CHECK ECM (STA VOLTAGE) 
   1. Measure the voltage of the ECM connectors.

      Voltage 

      ECM (STA VOLTAGE)
      
      

      Tester connection	Condition	Specified Condition
      E8-17 (STA) - E6-1 (E1)	Ignition switch ON	0 V
      E8-17 (STA) - E6-1 (E1)	Engine cranking	6 V or more

      Fig 3: Checking ECM (STA Voltage)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK: SYSTEM OK 

   NG: GO TO NEXT STEP 

4. INSPECT IGNITION OR STARTER SWITCH ASSEMBLY 
   1. Measure the resistance of the ignition switch terminals.

      Resistance 

      IGNITION OR STARTER SWITCH ASSEMBLY
      
      

      Switch Condition	Tester connection	Specified Condition
      LOCK	1 - 2 7 - 8	10 k ohms or higher
      START	1 - 2 7 - 8	Below 1 ohms

      Fig 4: Inspecting Ignition Or Starter Switch Assembly

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPLACE IGNITION OR STARTER SWITCH ASSEMBLY 

   OK: GO TO NEXT STEP 

5. CHECK ECM (STA VOLTAGE) 
   1. Measure the voltage of the ECM connectors.

      Voltage 

      ECM (STA VOLTAGE)
      
      

      Tester connection	Condition	Specified Condition
      E8-17 (STA) - E6-1 (E1)	Ignition switch ON	0 V
      E8-17 (STA) - E6-1 (E1)	Engine cranking	6 V or more

      Fig 5: Checking ECM (STA Voltage)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK: SYSTEM OK 

   NG: REPAIR OR REPLACE HARNESS AND CONNECTOR