DTC P1603: Engine Stall History [03/2019 - 11/2022]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
5. Read the DTCs.

   Powertrain > Engine and ECT > Trouble Codes 

   Result

   Result	Proceed to
   Only DTC P1603 is output	A
   DTCs other than P1603 are output	B

   HINT: 

   • When DTC P1603 and P1605 are output simultaneously, perform the troubleshooting for P1605 first.
   • Using Freeze Frame Data, confirm the conditions the moment the DTC was stored and after the DTC was stored. This information can be useful when troubleshooting.

Result: 

B 

GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [03/2019 - 04/2020]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [04/2020 - 09/2022]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2022 - 11/2022] 

Result: 

A 

See step  2

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Using the Techstream, confirm the vehicle conditions recorded in the Freeze Frame Data which were present when the DTC was stored.

   Powertrain > Engine and ECT > DTC (P1603) > Freeze Frame Data 

   Tester Display
   ISC Learning Value

   Result

   Freeze Frame Data Item for DTC P1603	Result	Suspected Area	Action	Proceed to
   ISC Learning Value	Less than 6.2 L/s	-	Go to the next step	A
   	6.2 L/s or higher	Throttle body assembly	Go to Engine Stalls (from step 11)	B

Result: 

B 

GO TO ENGINE STALLS. Refer to  Engine Stalls [01/2019 - 11/2022] 

Result: 

A 

See step  3

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Using the Techstream, confirm the vehicle conditions recorded in the Freeze Frame Data which were present when the DTC was stored.

   Powertrain > Engine and ECT > DTC (P1603) > Freeze Frame Data 

   Tester Display
   AFS Voltage B1S1
   Short FT B1S1
   Long FT B1S1

   Result

   Freeze Frame Data Item for DTC P1603			Suspected Area	Action	Proceed to
   AFS Voltage B1S1	Short FT B1S1	Long FT B1S1
   2.8 V to 3.8 V	-15% to 15%	-15% to 15%	-	Go to Engine Stalls	NEXT
   3.8 V or higher	15% or higher	-	Fuel pump	Go to Engine Stalls (from step 20)
   Less than 2.8 V, or 3.8 V or higher	Less than -15%, or 15% or more	Less than -15%, or 15% or more	Mass air flow meter sub-assembly Air fuel ratio sensor Fuel pump	Go to Engine Stalls (from step 15)*

   HINT: 

   *: If the value of AFS Voltage B1S1, Short FT B1S1 or Long FT B1S1 is as specified, malfunction of a component listed in the "Suspected Area" column of the table is suspected.

Result: 

NEXT 

GO TO ENGINE STALLS. Refer to  Engine Stalls [01/2019 - 11/2022]