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.

1. READ VALUE OF 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 (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 : SYSTEM OK 

   NG : Go to next step 

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

   Standard resistance 

   IGNITION OR STARTER SWITCH ASSEMBLY
   
   

   Switch Condition	Tester Connection	Specified Condition
   LOCK	1-2 7-8	10 kΩ or higher
   START	1-2 7 - 8	Below 1 Ω

   Fig 1: Inspecting Ignition Or Starter Switch Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   OK : Go to next step 

5. READ VALUE OF 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 

OK : SYSTEM OK 

NG : REPAIR OR REPLACE HARNESS OR CONNECTOR 

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

   Standard voltage 

   ECM (STA VOLTAGE)
   
   

   Tester Connection	Condition	Specified Condition
   E8-17 (STA) - E7-1 (E1)	Ignition switch ON	0 V
   E8-17 (STA) - E7-1 (E1)	Engine cranking	6 V or more

   Fig 2: Inspecting 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. INSPECT ECM (STA VOLTAGE) 
   1. Measure the voltage of the ECM connectors.

   Standard voltage 

   ECM (STA VOLTAGE)
   
   

   Tester Connection	Condition	Specified Condition
   E8-17 (STA) - E7-1 (E1)	Ignition switch ON	0 V
   E8-17 (STA) - E7-1 (E1)	Engine cranking	6 V or more

   Fig 3: Inspecting ECM (STA Voltage)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK : SYSTEM OK 

   NG : REPAIR OR REPLACE HARNESS OR CONNECTOR 

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

   Standard resistance 

   IGNITION OR STARTER SWITCH ASSEMBLY
   
   

   Switch Condition	Tester Connection	Specified Condition
   LOCK	1-2 7-8	10 kΩ or higher
   START	1-2 7-8	Below 1 Ω

   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) 

   Standard voltage 

   ECM (STA VOLTAGE)
   
   

   Tester Connection	Condition	Specified Condition
   E8-17 (STA) - E7-1 (E1)	Ignition switch ON	0 V
   E8-17 (STA) - E7-1 (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 OR CONNECTOR