and apply correct
type of THREE
BOND with proper
quantity.
Go to step 12.
12

Check if the car is
fixed.

Same DTC reset again?

1) Clear the memory by
using SSM.
2) Perform the drive
cycle. (Refer to
Chapter 5)

Replace the ECU
with new one.

END

Drive the test
driving cycle.
END

CHAPTER 4: Reading SSM Data:
4.1- SSM Data Monitor for “VVT Adv. Ang. Amount” or “VVT Initial Position Learning Value”.
“VVT Adv. Ang. Amount” for all models
“VVT Initial Position Learning Value” for all models except BRZ
(1). SSMIII
All other models →Each System Check → Engine Control System → Current Data Display &
Save → Normal sampling

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“VVT Adv. Ang. Amount” (L&R)

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“VVT Initial Position Learning Value” (#1 & #2)

(2). SSM4:
Diagnosis → Each System → Engine

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“VVT Adv. Ang. Amount” (R & L)

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“VVT Initial Position Learning Value” (#1 & #2)

4.2- SSM Work Support Reading “VVT Initial Position Learning Value” for BRZ
(1). SSMIII
Inspection of BRZ → Each System Check → Engine Control System → Work Support →
→ VVT Initial Position Learning Value Display

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VVT Initial Position Learning Value Display for BRZ on SSM III

(2). SSM4
Diagnosis → Each System → Engine → Work Support → VVT Initial Position Learning
Value Display

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VVT Initial Position Learning Value for BRZ Using SSM4

CHAPTER 5: Drive Cycle for Duplication Test:

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(1).
(2).
(3).
(4).
(5).

Clear the memory by using the SSM
Start the engine in a warmed up condition (coolant temp. should be more than 160 deg.F.).
Idling the engine for 3 min. or more.
Accelerate to 50 mph.
Keep the acceleration pedal at 0% for 5 sec. then move to 20% and hold for 5 seconds.
Repeat this mode for 20 minutes or more. The vehicle speed should be kept around 50mph while
in this mode.
(The diagnosis process is completed repeatedly during this step. This step requires 2 people. One
person should monitor the diagnostic value while another person is performing the driving cycle
because the diagnostic value cannot be saved).
(6). Foot off accelerator pedal (0%) and decelerate for more than 5 seconds.
(The learning process is completed during this part).
(7). Idle the engine and check the SSM data (Initial position learning value, diagnosis value).
(8). If the SSM shows the data is OK, turn the engine off to finish the procedure.
*Remarks:
+
Acceleration level can be changed depending on the traffic situation.
+
If no diagnosis data is memorized, perform driving cycle again without turning the engine off.
CHAPTER 6: OBD MODE $06 Monitor
Read out diagnosis value of OBD MODE&06 monitor:
Mode$06 stands for “Test result for continuously and non-continuously monitored system supported”
and one of the OBD-II diagnosis modes. It shows diagnosis value “Val.”, threshold, ”Min.”, “Max.”
and diagnosis test result: “Result”.
“MID” stands for OBD Monitor ID and shows items being tested. MID $35 means Right bank [Bank
1] AVCS test and MID $36 means Left bank [Bank 2] AVCS test.
“TID” stands for The Test ID which shows specific test item being run. $8B and $8C are positive and
negative side of the intake AVCS slow response. $8C and $8C are positive and negative side of the
exhaust AVCS slow response.
While the test is not completed, the Result shows “-“. If it is completed, “OK” or “NG” is displayed
and the diagnostic test is repeated.
“Min” and “Max” is threshold of normal range. If the diagnosis value is greater than the threshold,
then “NG” is displayed and MIL is turned on.
The inspection procedure in this bulletin uses the diagnosis value for judgment of the symptom
duplication or completion of the repair because the trouble symptom is intermittent and sometimes
hard to duplicate. Threshold value of the diagnosis value for the judgment is newly setup and smaller
than the criteria of MIL ON. Therefore, it is possible to judge the trouble even though there is no MIL
condition.
For example: the threshold is “4000” deg. in the table described in Chapter 7.3. The judgment criteria
in the troubleshooting in Chapter 4 is “1000”. That means if the diagnosis value “Val.” is greater than
4000, then MIL turns on. However, if the “Val.” is greater than 1000, it should be judged failure of
the AVCS system. The case completely and constantly failure the “Val.” should be greater than 4000,
but in the case of intermittent or slightly failure case, it could be between 1000 and 4000. This strategy is able to catch such cases.
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6.1- SSM III
Each System Check → Engine Control System → OBD System → Result of on-board monitor test
The diagnosis results will be displayed.

*For more details, see Chapter 6.3 below.

Diagnostic Value

Normal Range
Threshold (MIN)

Threshold (MAX)

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6.2- SSM4
Generic OBDII → Each System → ECM-Engine Control → OBD Mode test result

*For more details, see Chapter 6.3 below.
Normal Range
Diagnostic Value

Threshold (MIN)

Threshold (MAX)

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Check the diagnosis value “Val.” as described the troubleshooting in the 4th chapter. If the value is
greater than 1000 then it judges failure.
(1). Except LEGACY / OUTBACK 2.5L NA, FORESTER 2.5L NA
*Intake AND Exhaust AVCS-equipped models
Diagnosis Value
MID
INTAKE

Right Bank
Bank 1

EXHAUST
INTAKE

Left Bank
Bank 2

EXHAUST

Scaling
ID

TID

Normal Range (Threshold)

Val.

Min.

Max.

Result

+

$35

$8B

$9D

148.5°

0.0°

4000°

OK

-

$35

$8C

$9D

-187.0°

-4000°

0.0°

OK

+

$35

$8D

$9D

157.0°

0.0°

4000°

OK

-

$35

$8E

$9D

-185.5°

-4000°

0.0°

OK

+

$36

$8B

$9D

162.0°

0.0°

4000°

OK

-

$36

$8C

$9D

-154.0°

-4000°

0.0°

OK

+

$36

$8D

$9D

155.0°

0.0°

4000°

OK

-

$36

$8E

$9D

-169.5°

-4000°

0.0°

OK

*Diagnostic values listed here are just examples

(2). LEGACY / OUTBACK 2.5L NA, FORESTER 2.5L NA
* Intake ONLY AVCS equipped models
Diagnosis Value

Right Bank
Bank 1

INTAKE

Left Bank
Bank 2

INTAKE

Normal Range (Threshold)

MID

TID

Scaling
ID

Val.

Min.

Max.

Result

+

$35

$8B

$9D

148.5°

0.0°

4000°

OK

-

$35

$8C

$9D

-187.0°

-4000°

0.0°

OK

+

$36

$8B

$9D

162.0°

0.0°

4000°

OK

-

$36

$8C

$9D

-154.0°

-4000°

0.0°

OK

*Diagnostic values listed here are just examples

CHAPTER 7: AVCS Initial Learning Value
If the “VVT Initial Position Learning Value” is within the normal range, the chain timing is
correct. The normal range is + and – 10deg from the Standard angle.
Normal Range
Model

INTAKE

Standard

EXHAUST

Min.

Max.

Min.

Max.

INTAKE

EXHAUST

LEGACY / OUTBACK

2.5L NA

21.5

41.5

-

-

31.5

-

FORESTER

2.5L NA

21.5

41.5

-

-

31.5

-

FORESTER

2.0L DIT

68.0

88.0

97.0

117.0

78.0

107.0

WRX

2.0L DIT

68.5

88.5

98.5

118.5

78.5

108.5

IMPREZA / XV

2.0L NA

50.5

70.5

79.5

99.5

60.5

89.5

BRZ

2.0L NA

52.0

72.0

78.0

98.0

62.0

88.0

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Model

MY

Description