DTC P1283-00: Cold Start Fuel Injection Control Performance #1; DTC P1284-00: Cold Start Fuel Injection Control Performance #2; DTC P1285-00: Cold Start Fuel Injection Control Performance #3; DTC P1286-00: Cold Start Fuel Injection Control Performance #4 [03/2023 - ]: Procedure

1. Read the DTCs.

   Powertrain > Engine > Trouble Codes 

   Result

   Result	Proceed to
   DTC P1283-00, P1284-00, P1285-00 and/or P1286-00 is output	A
   DTC P1283-00, P1284-00, P1285-00 and/or P1286-00 and other DTCs are output	B

   HINT: 

   If any DTCs other than P1283-00, P1284-00, P1285-00 and/or P1286-00 are output, troubleshoot those DTCs first.

Result: 

B 

GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [03/2022 - 03/2023]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [03/2023 - 03/2024]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [03/2024 - ] 

Result: 

A 

See step  2

1. Read the DTCs.

   Powertrain > Engine > Trouble Codes 

   Result

   Result	Proceed to
   Only 1 DTC among DTC P1283-00, P1284-00, P1285-00 and P1286-00 is output	A
   2 or more DTCs among DTC P1283-00, P1284-00, P1285-00 and P1286-00 are output	B

   HINT: 

   If the malfunction occurred for one cylinder or multiple cylinders can be determined based on the stored DTCs.

Result: 

B 

See step  6

Result: 

A 

See step  3

1. Disconnect the ECM connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (for TMMC Made)

   Tester Connection	Condition	Specified Condition
   B94-16 (#1D+) - B94-17 (#1D-)	20°C (68°F)	1.34 to 1.64 Ω
   B94-11 (#2D+) - B94-10 (#2D-)	20°C (68°F)	1.34 to 1.64 Ω
   B94-12 (#3D+) - B94-13 (#3D-)	20°C (68°F)	1.34 to 1.64 Ω
   B94-15 (#4D+) - B94-14 (#4D-)	20°C (68°F)	1.34 to 1.64 Ω
   B94-16 (#1D+) or B94-17 (#1D-) - Body ground and other terminals	Always	1 MΩ or higher
   B94-11 (#2D+) or B94-10 (#2D-) - Body ground and other terminals	Always	1 MΩ or higher
   B94-12 (#3D+) or B94-13 (#3D-) - Body ground and other terminals	Always	1 MΩ or higher
   B94-15 (#4D+) or B94-14 (#4D-) - Body ground and other terminals	Always	1 MΩ or higher

   Standard Resistance (for TMC Made)

   Tester Connection	Condition	Specified Condition
   B50-16 (#1D+) - B50-17 (#1D-)	20°C (68°F)	1.34 to 1.64 Ω
   B50-11 (#2D+) - B50-10 (#2D-)	20°C (68°F)	1.34 to 1.64 Ω
   B50-12 (#3D+) - B50-13 (#3D-)	20°C (68°F)	1.34 to 1.64 Ω
   B50-15 (#4D+) - B50-14 (#4D-)	20°C (68°F)	1.34 to 1.64 Ω
   B50-16 (#1D+) or B50-17 (#1D-) - Body ground and other terminals	Always	1 MΩ or higher
   B50-11 (#2D+) or B50-10 (#2D-) - Body ground and other terminals	Always	1 MΩ or higher
   B50-12 (#3D+) or B50-13 (#3D-) - Body ground and other terminals	Always	1 MΩ or higher
   B50-15 (#4D+) or B50-14 (#4D-) - Body ground and other terminals	Always	1 MΩ or higher

   HINT: 

   • The standard values shown are direct fuel injector assembly resistance values.
   • If the measured resistance value differs from the other cylinders and the injector resistance is normal, check the related cylinder as a poorly connected connector is suspected.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

See step  5

Result: 

NG 

See step  4

Refer to INSPECTION [11/2021 - ]

Result

Result: 

OK 

REPAIR OR REPLACE HARNESS OR CONNECTOR (DIRECT FUEL INJECTOR ASSEMBLY - ECM) 

Result: 

NG 

See step  5

Refer to REMOVAL [11/2021 - ]

HINT: 

Perform "Inspection After Repair" after replacing the direct fuel injector assembly.

Refer to INITIALIZATION [11/2021 - ]

Result

Result: 

NEXT 

See step  7

Refer to REMOVAL [11/2021 - ]

Result

Result: 

NEXT 

See step  7

1. Clear the DTCs.

   Powertrain > Engine > Clear DTCs 

2. Turn the ignition switch off and wait for at least 30 seconds.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  8

1. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
2. Read the DTCs.

   Powertrain > Engine > Trouble Codes 

   OK

   DTCs are not output.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

END