Toyota Sequoia (2005). Manual - part 99

A21343

I9

I10

I11

I12

I13

I14

I15

I16

Wire Harness Side:

Injector Connector

B17413

E6

#40

#50

#20

#10

#30

#60

#70

#80

E8

–

DIAGNOSTICS

ENGINE

DI–199

393

10

Check for open and short in harness and connector between ignition SW and in-
jector, injector and ECM of misfiring cylinder.

PREPARATION:
(a)

Disconnect the I9, I10, I11, I12, I13, I14, I15 or I16 injector
connector.

(b)

Disconnect the E6 or E8 ECM connector.

CHECK:
Measure the resistance of the wire harness side connectors be-
tween the ECM and injector.
OK:

Standard:

Tester Connection

Specified Condition

Injector (I9–2) – #10 (E6–2)

Below 1 

Ω

Injector (I10–2) – #20 (E6–3)

Below 1 

Ω

Injector (I11–2) – #30 (E6–4)

Below 1 

Ω

Injector (I12–2) – #40 (E6–5)

Below 1 

Ω

Injector (I13–2) – #50 (E6–6)

Below 1 

Ω

Injector (I14–2) – #60 (E6–7)

Below 1 

Ω

Injector (I15–2) – #70 (E8–3)

Below 1 

Ω

Injector (I16–2) – #80 (E8–2)

Below 1 

Ω

Injector (I9–2) or #10 (E6–2) – 

Body ground

10 k

Ω

 or higher

Injector (I10–2) or #20 (E6–3) – 

Body ground

10 k

Ω

 or higher

Injector (I11–2) or #30 (E6–4) – 

Body ground

10 k

Ω

 or higher

Injector (I12–2) or #40 (E6–5) – 

Body ground

10 k

Ω

 or higher

Injector (I13–2) or #50 (E6–6) – 

Body ground

10 k

Ω

 or higher

Injector (I14–2) or #60 (E6–7) – 

Body ground

10 k

Ω

 or higher

Injector (I15–2) or #70 (E8–3) – 

Body ground

10 k

Ω

 or higher

Injector (I16–2) or #80 (E8–2) – 

Body ground

10 k

Ω

 or higher

A21343

I9

I10

I11

I12

I13

I14

I15

I16

Wire Harness Side:

Injector Connector

A21378

I18

Wire Harness Side:
Ignition Switch Connector

IG2

DI–200

–

DIAGNOSTICS

ENGINE

394

PREPARATION:
(a)

Disconnect the I9, I10, I11, I12, I13, I14, I15 or I16 injector
connector.

(b)

Disconnect the I18 ignition switch connector.

CHECK:
Measure the resistance the wire harness side connectors be-
tween the injector and ignition switch.
OK:

Standard:

Tester Connection

Specified Condition

Injector (I9–1) – IG2 (I18–6)

Below 1 

Ω

Injector (I10–1) – IG2 (I18–6)

Below 1 

Ω

Injector (I11–1) – IG2 (I18–6)

Below 1 

Ω

Injector (I12–1) – IG2 (I18–6)

Below 1 

Ω

Injector (I13–1) – IG2 (I18–6)

Below 1 

Ω

Injector (I14–1) – IG2 (I18–6)

Below 1 

Ω

Injector (I15–1) – IG2 (I18–6)

Below 1 

Ω

Injector (I16–1) – IG2 (I18–6)

Below 1 

Ω

Injector (I9–1) or IG2 (I18–6) – 

Body ground

10 k

Ω

 or higher

Injector (I10–1) or IG2 (I18–6) – 

Body ground

10 k

Ω

 or higher

Injector (I11–1) or IG2 (I18–6) – 

Body ground

10 k

Ω

 or higher

Injector (I12–1) or IG2 (I18–6) – 

Body ground

10 k

Ω

 or higher

Injector (I13–1) or IG2 (I18–6) – 

Body ground

10 k

Ω

 or higher

Injector (I14–1) or IG2 (I18–6) – 

Body ground

10 k

Ω

 or higher

Injector (I15–1) or IG2 (I18–6) – 

Body ground

10 k

Ω

 or higher

Injector (I16–1) or IG2 (I18–6) – 

Body ground

10 k

Ω

 or higher

NG

Repair or replace harness or connector.

OK

11

Check injector injection of misfiring cylinder (See page 

SF–29

).

NG

Replace injector.

OK

–

DIAGNOSTICS

ENGINE

DI–201

395

12

Check compression pressure of misfiring cylinder (See page 

EM–3

).

NG

Repair or replace.

OK

13

Check valve clearance of misfiring cylinder (See page 

EM–4

).

NG

Adjust valve clearance.

OK

14

Switch step by number of misfire cylinder (Refer to the result of step 4).

High misfire rate cylinder

Proceed to

1 or 2 cylinders

A

More than 3 cylinders

B

B

Check for intermittent problems 
(See page 

DI–11

).

A

15

Check valve timing (Check for looseness or a jumped tooth of timing belt) 
(See page 

EM–9

).

NG

Adjust valve timing (Repair or replace timing
belt).

OK

DI–202

–

DIAGNOSTICS

ENGINE

396

16

Check fuel pressure (See page 

SF–7

).

NG

Check and repair fuel pump, pressure regulator,
fuel pipe line and filter (See page 

SF–1

).

OK

17

Check intake air temperature and mass air flow rate.

PREPARATION:
(a)

Connect the hand–held tester to the DLC3.

(b)

Turn the ignition switch ON.

CHECK:
Check the intake air temperature.

(1)

When using hand–held tester, enter the following menu: DIAGNOSIS / ENHANCED OBD II /
DATA LIST / ALL / INTAKE AIR.

(2)

Read its value displayed on the hand–held tester.

OK:

Equivalent to ambient temperature

CHECK:
Check the air flow rate.

(1)

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

(2)

Read its value displayed on the hand–held tester.

OK:

Condition

Air Flow Rate (gm/s)

Ignition switch ON (do not start engine)

0

Idling

4 to 6

Running without load (2,500 rpm)

13 to 20

Idling to quickly accelerating

Air flow rate fluctuates

NG

Replace

 mass air flow 

meter.

OK