Inspection Procedure

HINT:

Read freeze frame data using the hand-held tester or the OBD II scan tool. Freeze frame data records the engine conditions when a malfunction is detected. 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, as well as other data from the time when a malfunction occurred.

Hand-held tester: 

1. Connect hand-held tester, and check STA signal. 

   PREPARATION: 

   1. Connect the hand-held tester to the DLC3.
   2. Turn the ignition switch ON, and push the hand-held tester main switch ON.
   3. Enter the following menus: DIAGNOSTICS / ENHANCED OBD II / DATA LIST / ALL / STARTER SIG.

   CHECK: 

   Read the STA signal on the hand-held tester while the starter operates.

   OK: 

   Ignition Switch Position table
   
   

   Ignition Switch Position	ON	START
   STA Signal	OFF	ON

   1. OK: Go to step   5 . 
   2. NG: Go to Next Step 
2. Check park/neutral position switch (See  DTC P0705: TRANSMISSION RANGE SENSOR CIRCUIT  ). 
   1. NG: Replace park/neutral position switch. Go to next step 5 after the replacement. 
   2. OK: Go to Next Step 
3. Check ignition switch (See  IGNITION SWITCH & KEY UNLOCK WARNING SWITCH  ). 
   1. NG: Replace ignition switch. Go the next step 5 after the replacement. 
   2. OK: Go to Next Step 
4. Connect hand-held tester, and check STA signal. 

   PREPARATION: 

   1. Connect the hand-held tester to the DLC3.
   2. Turn the ignition switch ON, and push the hand-held tester main switch ON.
   3. Enter the following menus: DIAGNOSTICS / ENHANCED OBD II / DATA LIST / ALL / STARTER SIG.

   CHECK: 

   Read the STA signal on the hand-held tester while the starter operates.

   OK: 

   Ignition Switch Position table
   
   

   Ignition Switch Position	ON	START
   STA Signal	OFF	ON

   1. NG: Repair or replace harness or connector. 
   2. OK: Go to Next Step 
5. Check DTC reoccur. 

   PREPARATION: 

   1. Connect the hand-held tester to the DLC3.
   2. Turn the ignition switch ON and hand-held tester main switch ON.
   3. Clear DTC (See PRE-CHECK ).
   4. Drive the vehicle more than 40 km/h (25 mph) for 20 seconds or more.

   CHECK: 

   Check DTC reoccur.

   RESULT: 

   DTC output Display table
   
   

   Display (DTC output)	Proceed to
   P0617	A
   No DTC output	B

   1. A: Replace ECM (See  INSPECTION  ). 
   2. B: Check for intermittent problems (See  PRE-CHECK  ). 

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

1. Check voltage between terminal STA of ECM connector and body ground. 

   PREPARATION: 

   Turn the ignition switch ON.

   CHECK: 

   Measure the voltage between terminal STA of the ECM connector and the body ground, while cranking the engine (ignition switch START position) and while not engine cranking the engine (ignition switch position ON).

   OK: 

   1. Voltage: 
   2. 6 V or more (ignition switch START position) 
   3. 0 V (ignition switch ON position) 
   Fig 1: Checking Voltage Between Terminal STA Of ECM Connector And Body Ground

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. OK: Go to step   5 . 
   2. NG: Go to Next Step 
2. Check park/neutral position switch (See  DTC P0705: TRANSMISSION RANGE SENSOR CIRCUIT  ). 
   1. NG: Replace park/neutral position switch. Go to next step 5 after the replacement. 
   2. OK: Go to Next Step 
3. Check ignition switch (See  IGNITION SWITCH & KEY UNLOCK WARNING SWITCH  ). 
   1. NG: Replace ignition switch. Go to next step 5 after the replacement. 
   2. OK: Go to Next Step 
4. Check voltage between terminal STA of ECM connector and body ground. 

   PREPARATION: 

   Turn the ignition switch ON.

   CHECK: 

   Measure the voltage between terminal STA of the ECM connector and the body ground, while cranking the engine (ignition switch START position) and while not engine cranking the engine (ignition switch position ON).

   OK: 

   1. Voltage: 
   2. 6 V or more (ignition switch START position) 
   3. 0 V (ignition switch ON position) 
   Fig 2: Checking Voltage Between Terminal STA Of ECM Connector And Body Ground

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NG: Repair or replace harness or connector. 
   2. OK: Go to Next Step 
5. Check DTC reoccur. 

   PREPARATION: 

   1. Connect the OBD II scan tool to the DLC3.
   2. Turn the ignition switch ON and hand-held tester main switch ON.
   3. Clear DTC (See PRE-CHECK ).
   4. Drive the vehicle more than 40 km/h (25 mph) for 20 seconds or more.

   CHECK: 

   Check DTC reoccur.

   RESULT: 

   DTC output Display table
   
   

   Display (DTC output)	Proceed to
   P0617	A
   No DTC output	B

   1. A: Replace ECM (See  INSPECTION  ). 
   2. B: Check for intermittent problems (See  PRE-CHECK  ).