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, and other data from the time the 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 ON the ignition switch. Push the hand-held tester main switch.
   3. On the hand-held tester, enter the following menus: DIAGNOSIS / 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 AND STA SIGNAL DETAIL
   
   

   Ignition Switch Position	ON	START
   STA signal	OFF	ON

   1. OK: Replace ECM (see  ENGINE CONTROL MODULE (ECM)  ). 
   2. NG: Go To Next Step 
2. Check PNP switch (A/T) (see  DTC P0705: TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (PRNDL INPUT)  ) or clutch start switch (M/T) (see  CLUTCH PEDAL  ). 
   1. NG: Replace PNP switch or clutch start switch. 
   2. OK: Go To Next Step 
3. Connect hand-held tester and check STA signal. 

   PREPARATION: 

   1. Connect the hand-held tester to the DLC3.
   2. Turn ON the ignition switch. Push the hand-held tester main switch.
   3. On the hand-held tester, enter the following menus: DIAGNOSIS / 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 AND STA SIGNAL DETAIL
   
   

   Ignition Switch Position	ON	START
   STA signal	OFF	ON

   1. OK: System OK. 
   2. NG: Go To Next Step 
4. Check ignition switch (see  INSPECTION  ). 
   1. NG: Replace ignition switch. 
   2. OK: Go To Next Step 
5. Connect hand-held tester and check STA signal. 

   PREPARATION: 

   1. Connect the hand-held tester to the DLC3.
   2. Turn ON the ignition switch. Push the hand-held tester main switch ON.
   3. On the hand-held tester, enter the following menus: DIAGNOSIS / 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 AND STA SIGNAL DETAIL
   
   

   Ignition Switch Position	ON	START
   STA signal	OFF	ON

   1. OK: System OK. 
   2. NG: Repair or replace harness and connector. 

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

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

   PREPARATION: 

   1. Remove the glove compartment (see ENGINE CONTROL MODULE (ECM) ).
   2. Turn the ignition switch ON.

   CHECK: 

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

   OK: 

   Voltage: 

   6 V or more (ignition switch START position) 

   0 V (ignition switch ON position) 

   Fig 1: Identifying Terminal STA Of ECM Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. OK: Replace ECM (see  ENGINE CONTROL MODULE (ECM)  ). 
   2. NG: Go To Next Step 
2. Check PNP switch (A/T) (see  DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (PRNDL INPUT)  ) or clutch start switch (M/T) (see  CLUTCH PEDAL  ). 
   1. NG: Replace PNP switch or clutch start switch. 
   2. OK: Go To Next Step 
3. Check voltage between terminal STA of ECM connector and body ground. 

   PREPARATION: 

   1. Remove the glove compartment (see ENGINE CONTROL MODULE (ECM) ).
   2. Turn the ignition switch ON.

   CHECK: 

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

   OK: 

   Voltage: 

   6 V or more (ignition switch START position) 

   0 V (ignition switch ON position) 

   Fig 2: Identifying Terminal STA Of ECM Connector (1 Of 2)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. OK: Replace ECM (see  ENGINE CONTROL MODULE (ECM)  ). 
   2. NG: Go To Next Step 
4. Check ignition switch (see  INSPECTION  ). 
   1. NG: Replace ignition switch. 
   2. OK: Go To Next Step 
5. Check voltage between terminal STA of ECM connector and body ground. 

   PREPARATION: 

   1. Remove the glove compartment (see ENGINE CONTROL MODULE (ECM) ).
   2. Turn the ignition switch ON.

   CHECK: 

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

   OK: 

   Voltage: 

   6 V or more (ignition switch START position) 

   0 V (ignition switch ON position) 

   Fig 3: Identifying Terminal STA Of ECM Connector (2 Of 2)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. OK: Replace ECM (see  ENGINE CONTROL MODULE (ECM)  ). 
   2. NG: Go To Next Step 
6. Check for open in wire harness between ECM and PNP switch (A/T) (see  DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (PRNDL INPUT)  ) or clutch start switch (M/T) (see  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  ). 
   1. NG: Repair or replace harness and connector. 
   2. OK: Replace ECM (see  ENGINE CONTROL MODULE (ECM)  ).