Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Manual - part 1244

6E1–52

RODEO Y22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

4. Case DTC stored at PCM

Record the DTC and the freeze frame data and flash
it.
After reappear the trouble from the freeze frame data.
Check power supply circuits, ground circuits, and
signal circuit.

CHECK POINT:

D

Which is mechanical trouble or electrical trouble.

D

Snapshot the engine data at the Tech 2. And
observe variation of the any data, faulty data, fixed
data and  etc.

5. Case DTC did not store at PCM

CHECK POINT:

D

Which is mechanical trouble or electrical trouble.

D

Snapshot the engine data at the Tech 2. And
observe variation of the any data, faulty data, fixed
data and  etc.

CHECK POINT:

1. A systematic error is caused by a low accuracy of

electric items.

2. A random error is caused by electric trouble. It is

disturbance and mechanical trouble.

3. A fixed error is caused by broken electric item,

open circuit, short circuit.

System Check at the Tech 2

 

Step

Action

Value(s)

Yes

No

1

1. Ignition “On”, engine “Off”.
2. Check the check engine lamp.

Did it turm on?

—

Go to 

Step 2

Go to 

“No

Malfunction

Indicator

Lamp”

2

1. Ignition “Off”.
2. Install Tech 2
3. Ignition “On”, engine “Off”.
4. Indicate the engine data at Tech 2

The engine data is illuminate on Tech 2

—

Go to 

Step 4

Go to 

Step 3

3

1. Ignition “Off”.
2. Discconnect the PCM.
3. Check the class2 data circuit for a open, a short to

ground or short to voltage.

4. Checke the power supply cirucit at the DLC for a

open, a short to ground or short to voltage.

If the problelm is found, repair as necessary.

Was a problem found?

—

Verify Repair

Go to 

Step 4

4

1. Ignition “On”, engine “On”.

Did it run and keep running?

—

Go to 

Step 4

Go to 

“Engine

Cranke But

Will Not Run”

5

1. Turn on Tech 2 and select Model year and this

engine after selected “Powertrain”.

2. Select menu item “F0:Diagnostic Trouble Code” on

Tech 2.

3. Select menu item “F0:Read DTC info Priority” on

Thch 2.

Is Tech2 illuminated any DTCs?

—

Go to 

Step 6

—

6

1. Check DTC type which is current, history or

intermittent.

Is the DTC current?

—

Go to 

Step 8

Go to 

Step 7

6E1–53

RODEO Y22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

System Check at the Tech 2

  (Cont'd)

Step

No

Yes

Value(s)

Action

7

1. Record the DTC and the freeze frame data.
2. Flash the DTC.
3. Check trouble setteing condition at the freeze frame

data.

4. Reappear the trouble from the freeze frame data.
5. Select menu item “F2:DTC Info.” On the DTC.
6. Select menu item “F4:Not Run Since Code Cleared”

on the DTC.

7. Check DTC id not illuminated on the svreen.( When

the action is completed, the PCM checked relevant
failure.)

8. Select menu item “F0:Read DTC info by Priority”

and check DTC.

Was the DTC illuminated on the Tech 2?

—

Go to 

Step 8

Go to

“General

decription 5.

Case DTC

did not store

at PCM” in

this chapter

8

1. Turn on Tech 2 and select Model year and this

engine after selcted “Powertrain”.

2. Select menu item “F0:Diagnostic Trouble Code” on

Tech 2.

3. Select menu itme “F2:DTC Information”.
4. Select menu itme “F2:Last Test Failed”.
5. As obderve the Tech2 screen, vibrate relevant

sensor body, connector, harness and actuator.

If the screen is shaded, the vibrated point is breaking.

Was a problem found?

—

Verify Repair

Go to 

Step 9

9

1. Turn on Tech 2 and select Model year and this

engine after selected “Powertrain”.

2. Select menu item “F3:Miscellaneous Tests” on

Tech 2.

3. Select menu itme relevant sensor, actuator and

parts.

4. If a relevant part is not fined on the screen, go to

step 10.

5. After a test executed, If a problem is found, repair as

necessary.

Was problem found?

—

Verify Repair

Go to 

Step 10

10

1. Turn on Tech 2 and selct Model year and this engine

after selected “Powertrain”.

2. Select menu item “F1:Data Display” on Tech 2.
3. Select menu item “F0:Engine Data” or ”F1:O2

sensor Data”.

4. Ignition “On”, engine “On”. And keep idling speed.
5. As observe the Tech 2 screen, Vibrate relevant

sensor body.

connector, harness and actuator.
If the screen is shaded, the vibrated point is braking.

Was a problem found?

—

Verify Repair

Go to 

step 11

6E1–54

RODEO Y22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

System Check at the Tech 2

  (Cont'd)

Step

No

Yes

Value(s)

Action

11

1. Turn on Tech 2 and select Model year and this

engine agter selected “Powertrain”.

2. Select menu item “F1:Date Display” on Tech2.
3. Select menu itne “F0:Engine Data” or “F1:O2

sensor Data”.

4. Ignition “On”, engine “On”. And keep idling speed.

(Warm it enough temprature.)

5. Using Tech 2, Start snapshot data.
6. Few minutes later, run up engine unitl 2500rpm for

engine data recording.

7. Terminat snapshot, and reappear the engine data.
8. Compare specified value with it, and reappear the

engine data.

9. If a problem was found, check the error which is

systematic error, random error fixed error.

D

A systematic error is caused by a low accuracy
of electric items. So a lot of cases will be
replaced it.

D

A randonm error id caused by electric trouble,
it is disturbance and mechanical trouble. In
this case, check out applied voltage to electric
itme exitence of EMI(electromagnetic
interference) parts, elctrical interference,
fitting of non genuine parts and mechanical
parts.

D

A fixed error is caused by broken electric item,
open circuit, short circuit. For example when
ECT sensor circuit was open ciruit, it is
illuminated -40

°

C on Tech 2.

10.If a problem was found, repair as neceesaary.

Was a problem found?

—

Verify Repair

Go to 

Step 12

12

1. Countercheck mechanical of the engine. Refer to

engine work shop manual.

2. If a problem was found, repair as necessary.

Was a problem found?

—

Verify Repair

Go to 

Step 13

13

1. Countercheck this check table.
2. When this table is not found a trouble, check

following point.

D

Physical/Visual check

D

Theh 2 data

D

Freeze fram data

D

Conceivable circuit

3. If a problem was found, repair as necessary.

Was a problem found?

—

Verify Repair

—

6E1–55

RODEO Y22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

Plotting Graph Flow Chart (Plotting graph after obtaining vehicle information)

060RX041