DTC P0335-62: Crankshaft Position Sensor "A" Signal Compare Failure [11/2021 - ]: Procedure

1. Read the Data List according to the display on the GTS.

   Body Electrical > Power Source Control > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Engine Driving Condition (Line)	Engine state	Stop or Driving	Stop: Engine stopped Driving: Engine running	-

   Body Electrical > Power Source Control > Data List 

   Tester Display
   Engine Driving Condition (Line)

   Body Electrical > Power Source Control > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Engine Speed	Engine speed	0 to 16383.75 rpm	Fluctuates in accordance with actual engine speed	-

   Body Electrical > Power Source Control > Data List 

   Tester Display
   Engine Speed

   OK

   The GTS display changes correctly in response to the engine condition.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

GO TO SFI SYSTEM 

for A25A-FKS: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ]

for T24A-FTS: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ]

Result: 

NG 

See step  2

Pre-procedure1

1. Disconnect the A10 certification ECU (smart key ECU assembly) connector.
2. Disconnect the A20*1 or A19*2 ECM connector.
   1. *1: for A25A-FKS
   2. *2: for T24A-FTS

   Procedure1

3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   FOR A25A-FKS
   
   

   Tester Connection	Condition	Specified Condition
   A10-15 (NE) - A20-16 (NEO)	Always	Below 1 Ω
   A10-15 (NE) or A20-16 (NEO) - Other terminals and body ground	Always	10 kΩ or higher

   FOR T24A-FTS
   
   

   Tester Connection	Condition	Specified Condition
   A10-15 (NE) - A19-19 (NEO)	Always	Below 1 Ω
   A10-15 (NE) or A19-19 (NEO) - Other terminals and body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

   Post-procedure1

4. None

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

Pre-procedure1

1. Connect the A10 certification ECU (smart key ECU assembly) connector.
2. Connect the A20*1 or A19*2 ECM connector.
   1. *1: for A25A-FKS
   2. *2: for T24A-FTS

   Procedure1

3. Using an oscilloscope, check the engine speed input signal waveform at the terminal of the certification ECU (smart key ECU assembly).

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component with harness connected (Certification ECU (Smart Key ECU Assembly))

   OK

   Tester Connection	Condition	Specified Condition
   A10-15 (NE) - Body ground	Engine stopped	No pulse generation
   A10-15 (NE) - Body ground	Engine running	Pulse generation

   Result

   Proceed to
   OK
   NG

   Post-procedure1

4. None

Result: 

OK 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [11/2021 - ] 

Result: 

NG 

GO TO SFI SYSTEM 

for A25A-FKS: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ]

for T24A-FTS: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ]