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  .
• Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when a malfunction is 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.

1. READ VALUE OF INTELLIGENT TESTER (STARTER SIGNAL) 
   1. Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
   2. Turn the ignition switch ON and turn the tester ON.
   3. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / STARTER SIG.
   4. Confirm the starter signal status when the ignition switch is operated.

      OK 

      IGNITION SWITCH POSITION REFERENCE CHART
      
      

      Ignition Switch Position	STARTER SIG
      ON	OFF
      Start	ON

   OK: REPLACE ECM 

   NG: Go to next step 

2. INSPECT PARK / NEUTRAL POSITION SWITCH 
   Fig 1: Identifying Park/ Neutral Position Switch Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Move the shift lever to the P or N position.
   2. Disconnect the P1 PNP switch connector.
   3. Measure the resistance of the PNP switch.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART
      
      

      Tester Connection	Shift Position	Specified Condition
      9-6	P or N	Below 1 Ω

   NG: REPLACE PARK/ NEUTRAL POSITION SWITCH 

   OK: Go to next step 

3. READ VALUE OF INTELLIGENT TESTER (STARTER SIGNAL) 
   1. Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
   2. Turn the ignition switch ON and turn the tester ON.
   3. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / STARTER SIG.
   4. Confirm the starter signal status when the ignition switch is operated.

      OK 

      IGNITION SWITCH POSITION REFERENCE CHART
      
      

      Ignition Switch Position	STARTER SIG
      ON	OFF
      Start	ON

   OK: SYSTEM OK 

   NG: Go to next step 

4. INSPECT IGNITION SWITCH 
   1. Measure the resistance of the ignition switch.
      Fig 2: Identifying Ignition Switch Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART
      
      

      Tester Connection	Switch Condition	Specified Condition
      7 (AM2) - 8 (ST2)	ON	Below 1 Ω
      7 (AM2) - 8 (ST2)	START	10 kΩ or higher

   NG: REPLACE IGNITION SWITCH AND GO TO NEXT STEP 

   OK: Go to next step 

5. READ VALUE OF INTELLIGENT TESTER (STARTER SIGNAL) 
   1. Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
   2. Turn the ignition switch ON and turn the tester ON.
   3. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / STARTER SIG.
   4. Confirm the starter signal status when the ignition switch is operated.

      OK 

      IGNITION SWITCH POSITION REFERENCE CHART
      
      

      Ignition Switch Position	STARTER SIG
      ON	OFF
      Start	ON

   NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

   OK: SYSTEM OK