Toyota Sequoia (2005). Manual - part 121

A23556

8

J17
J/C

ECM

Combination Meter

SPD

E5

G–O

B

G–O

25

C5

B

–

DIAGNOSTICS

ENGINE

DI–279

473

MONITOR STRATEGY

Related DTCs

P0500

Vehicle speed sensor ”A” pulse input error

Main sensors

Vehicle speed sensor

Required sensors/components

Related sensors

Park/Neutral position switch, Engine coolant tem-

perature sensor, Combination meter

Frequency of operation

Continuous

Duration

500 times

MIL operation

Immediate

Sequence of operation

None

TYPICAL ENABLING CONDITIONS

It

Specification

Item

Minimum

Maximum

The monitor will run whenever this DTC is
not present

See page 

DI–18

Vehicle speed is 9 km/h (5.59 mph) or

more

4 sec.

–

Park/neutral position switch

OFF

TYPICAL MALFUNCTION THRESHOLDS

Detection Criteria

Threshold

Sensor signal

No pulse input

WIRING DIAGRAM

DI–280

–

DIAGNOSTICS

ENGINE

474

INSPECTION PROCEDURE

HINT:
Read freeze frame data using 

the hand−held tester.

 Freeze frame data records the engine conditions when

a malfunction is detected. 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, as well as other
data from the time when a malfunction occurred.

1

Check operation of speedometer.

PREPARATION:
(a)

Connect the hand–held tester to the DLC3.

(b)

Turn the ignition switch to ON and push the hand–held tester main switch ON.

(c)

Start the engine.

(d)

When using hand–held tester, enter the following menu: DIAGNOSIS / ENHANCED OBD II / DATA
LIST / PRIMARY / VEHICLE SPD.

CHECK:
Read the mass air flow rate on the hand–held tester.
RESULT:

Vehicle speed

Proceed to

Vehicle speed remains 0 km/h (0 mph)

A

Vehicle speed is lower than actual speed

A

Vehicle speed is same as actual speed

B

B

Check for intermittent problems 
(See page 

DI–11

).

A

B17411

SPD(+)

E6

E5

E1

AT7809

4 to

 

6 V

Turn the Wheel

3

2

1

I25536

Component Side Connector:

Vehicle Speed Sensor

–

DIAGNOSTICS

ENGINE

DI–281

475

2

Check voltage between terminal SPD and E1 of ECM connector.

PREPARATION:
(a)

Shift the shift lever to neutral.

(b)

Jack up the rear wheel on one side.

(c)

Turn the ignition switch ON.

CHECK:
Measure the voltage between the specified terminal of the E5
and E6 ECM connector when the wheel is turned slowly.
OK:

Standard:

Tester Connection

Specified Condition

SPD (E5–8) – E1 (E6–1)

Generated intermittently

HINT:
The output voltage should fluctuate up and down similarly to the
diagram on the left when the wheel is turned slowly.

OK

Replace ECM (See page 

SF–80

).

NG

3

Check vehicle speed sensor.

PREPARATION:
(a)

Disconnect the vehicle speed sensor connector.

(b)

Connect the battery positive (+) lead to terminal 1 and the
battery negative (–) lead to terminal 2.

(c)

Connect the tester positive (+) lead to terminal 3 and the
tester negative (–) lead to terminal 2.

(d)

Shift the shift lever to N position.

(e)

Rotate the shaft.

CHECK:
Check that there is voltage change between terminals 2 and 3.
OK:

Standard: 0 V to 10 V or more

NG

Replace vehicle speed sensor.

OK

BR3795

OK

NG

Clearance

B17411

SPD(+)

E5

A23540

Wire Harness Side:

Front View

Combination Meter Connector

C5

DI–282

–

DIAGNOSTICS

ENGINE

476

4

Check sensor installation (Vehicle speed sensor).

CHECK:
Check the vehicle speed sensor installation.
OK:

The vehicle speed sensor is installed properly.

NG

Tighten sensor installation bolt.

OK

5

Check for open and short in harness and connector between combination meter
and ECM.

PREPARATION:
(a)

Disconnect the C5 combination meter connector.

(b)

Disconnect the E5 ECM connector.

CHECK:
Check for resistance between the wire harness side connec-
tors.
OK:

Standard (Check for open):

Symbols (Terminal No.)

Specified condition

SPD (E5–8) – C5–25

Below 1 

Ω

Standard (Check for short):

Symbols (Terminal No.)

Specified condition

SPD (E5–8) or C5–25 – Body ground

10 k

Ω

 or higher

NG

Repair or replace harness or connector.

OK

Check combination meter circuit (See page

DI–1632