Toyota Sequoia (2005). Manual - part 101

A23476

ECM

EB4

EB4

Female
Connector

Male 
Connector

Knock Sensor

8

3

4

7

8

3

4

7

2

1

2

1

E7

E7

E7

E7

28

21

20

KNK1

EKNK

KNK2

EKN2

29

–

DIAGNOSTICS

ENGINE

DI–207

401

1

Connect hand–held tester, and check knock sensor circuit.

PREPARATION:
(a)

Disconnect the EB4 connector.

(b)

Using lead wires, connect the EB4 connectors as follows.

Male Connector – Female Connector

Terminal 4 – Terminal 8

Terminal 3 – Terminal 7

Terminal 8 – Terminal 4

Terminal 7 – Terminal 3

(c)

Warm up the engine.

(d)

Run the engine at 3,000 rpm for 10 seconds or more.

CHECK:
(a)

Connect the hand–held tester to the DLC3.

(b)

Turn the ignition switch to ON and turn the hand–held tes-
ter ON.

(c)

Select the item: DIAGNOSIS / ENHANCED OBD II / DTC
INFO / CURRENT CODES.

(d)

Read DTCs.
Result :

Display

Proceed to

DTCs same as when vehicle brought in 

P0325, P0327, P0328 

→

 P0325, P0327, P0328 

or 

P0330, P0332, P0333 

→

 P0330, P0332, P0333

A

DTC different from when vehicle brought in 

P0325 

→

 P0330 

or 

P0330 

→

 P0325

B

DTCs different from when vehicle brought in 

P0327, P0328 

→

 P0332, P0333 

or 

P0332, P0333 

→

 P0327, P0328

C

(e)

Reconnect the EB4 connector.

B

Go to step 4.

C

Go to step 5.

A

B17411

KNK1

KNK2

EKN2

EKNK

E7

DI–208

–

DIAGNOSTICS

ENGINE

402

2

Check for open and short in harness and connector between EB4 connector and
ECM (See page 

IN–35

).

NG

Repair or replace harness or connector.

OK

3

Measure voltage between terminals KNK1 and EKNK, KNK2 and EKN2 of ECM.

PREPARATION:
(a)

Disconnect the E7 ECM connector.

(b)

Turn the ignition switch to ON.

CHECK:
(a)

Measure the voltage between the specified ECM termi-
nals.

OK:

Standard:

Tester Connection

Specified Condition

KNK1 (E7–29) – EKNK (E7–28)

4.5 to 5.5 V

KNK2 (E7–21) – EKN2 (E7–20)

4.5 to 5.5 V

(b)

Reconnect the ECM connector.

NG

Replace ECM (See page 

SF–80

).

OK

Check for intermittent problems 
(See page 

DI–11

).

4

Check knock sensor installation.

CHECK:
Check the knock sensor installation.
OK:

Torque: 20 N

⋅

m (204 kgf

⋅

cm, 15 ft

⋅

lbf)

NG

Tighten the sensor.

OK

A23513

Male Connector

EB4

Wire Harness Side:

Front View

–

DIAGNOSTICS

ENGINE

DI–209

403

Replace knock sensor (See page 

SF–66

).

5

Check knock sensor.

PREPARATION:
(a)

Disconnect the EB4 connector.

CHECK:
(a)

Check the resistance between the terminals of the EB4
male connector.

OK:

Standard:

Tester Connection

Specified Condition

EB4 male connector 3 –4

120 to 280 k

Ω

EB4 male connector 7 – 8

120 to 280 k

Ω

(b)

Reconnect the EB4 connector.

OK

Check for intermittent problems 
(See page 

DI–11

).

NG

6

Check for open and short in harness and connector between EB4 connector and
knock sensor (See page 

IN–35

).

HINT:

If DTC P0327 or P0328 has changed to P0332 or P0333, check the knock sensor circuit on the right
bank side.

If DTC P0332 or P0333 has changed to P0327 or P0328, check the knock sensor circuit on the left
bank side.

NG

Repair or replace harness or connector.

OK

Replace knock sensor.

FI7059

FI7060

A00069

G2 and NE Signal Waveforms

20 msec./Division (Idling)

10 msec./Division (Idling)

5 V
/Division

G2

NE

5 V
/Division

G2

NE

DI–210

–

DIAGNOSTICS

ENGINE

404

DTC

P0335

Crankshaft Position Sensor ”A” Circuit

DTC

P0339

Crankshaft Position Sensor ”A” Circuit In-
termittent

CIRCUIT DESCRIPTION

The crankshaft position sensor system consists of a crankshaft position sensor plate and a pick–up coil.
The sensor plate has 32 teeth and is installed on the crankshaft. The pick–up coil is made of an iron core
and magnet. The sensor plate rotates and as each tooth passes through the pick–up coil, a pulse signal is
created. The pick–up coil generates 32 signals for each engine revolution. Based on these signals, the ECM
calculates the crankshaft position and engine RPM. Using these calculations, the fuel injection time and igni-
tion timing are controlled.

DTC No.

DTC Detecting Condition

Trouble Area

P0335

No crankshaft position sensor signal to ECM during crank-

ing (2 trip detection logic)

Open or short in crankshaft position sensor circuit

Crankshaft position sensor

P0335

No crankshaft position sensor signal to ECM with engine

speed 450 rpm or more (1 trip detection logic)

Crankshaft  osition sensor

Signal plate

ECM

P0339

In condition (a), (b) and (c), when no crankshaft position

sensor (NE) signal is input for 0.05 sec. or more. : 

(1 trip detection logic)

(c) Engine revolution 1,000 rpm or more

(d) STA signal is OFF

(e) 3 sec. or more has lapsed after STA signal is switched

from ON to OFF.

Open or short in crankshaft position sensor circuit

Crankshaft position sensor

Signal plate

ECM

Reference: Inspection using the oscilloscope.
The correct waveform is as shown in the illustration.

Tester Connection

Specified Condition

VV1+ (E6–25) – VV1– (E6–24)

VV2+ (E6–18) – VV2– (E6–28)

Correct waveform is as shown

NE+ (E6–21) – NE– (E6–20)

Correct waveform is as shown

DID86–01