Engine In Limp Home Mode And Mil Activated (30.20/61B)

Publication date: 2006-04-11
Reference number: 30.20/61B

ENGINE IN LIMP HOME MODE AND MIL ACTIVATED

TECHNICAL SERVICE BULLETIN

Reference Number(s): P-B-30.20/61B, Date of Issue: April 11, 2006

MERCEDES-BENZ:	Model 170.466; Model 203.065; Model 211.076; Models 215.374; Model 220.174; Model 230.474
GROUP:	30 - Throttle Control, Speed Control Systems

Superceded Bulletin(s): P-B-30.20/61A, Date of Issue: December 16, 2005

SUBJECT

Model 170.466, Equipped with Engine 112.960 (up to Engine Serial no. 014851)

Model 203.065, Equipped with Engine 112.961 (up to Engine Serial no. 014851)

Model 211.076, Equipped with Engine 113.990 (up to Engine Serial no. 037058)

Models 215.374, Equipped with Engine 113.991 (up to Engine Serial no. 037058)

Model 220.174, Equipped with Engine 113.991 (up to Engine Serial no. 037058)

Model 230.474, Equipped with Engine 113.992 (up to Engine Serial no. 037058)

Engine in Limp Home Mode and MIL Activated

SERVICE INFORMATION

If you receive customer reports in the above model vehicles of the MIL activated and/or engine in limp-home mode due to the following conditions, perform the respective remedy as indicated below.

Condition 1 - Fault codes stored in the ME-SFI control unit. This may be caused by contact problems at the connector between engine wiring harness and throttle valve or air circulation flap.

P2032 and/or P202E (M16/6 Throttle valve actuator: Line transposed) - valid for M112K & M113K
And/or code P208E (M16/7 Recirculating air flap actuator: Line transposed) - valid only for M113K

Condition 2 - Fault code P202E (M16/6 Throttle valve actuator: Line transposed) stored in the ME control unit and MIL stays activated immediately after starting the engine. Valid only for M113K. This may be caused by feedback of voltage supply into the engine control unit via the supercharger clutch.

Condition 1 in M112K : P2032 and/or P202E stored in ME control module of M112K engine Remedy 1a : Use kit part no. A112 141 03 25 valid for engines 112.960/961 (refer to Parts Information table).

Remove the throttle valve from the supercharger. Refer to WIS document AR07.61-P-1401SVK.
Apply contact "Santovac" from kit with paintbrush to the contact pins of the connector at the engine harness; wait approximately 10 minutes to allow it to dry.
From the kit, install throttle valve with wiring adapter and dampening.

Condition 1 in M113K : P2032 and/or P202E and/or P208E stored in ME control module of M113K engine Remedy 1b : For kit part numbers refer to Parts Information table.

Exchange the original throttle valve actuator with the throttle valve actuator from kit A113 141 06 25 or kit A113 141 05 25 (depending on the models) - refer to Remedy for M112K steps 1, 2 and 3.
Remove the original re-circulating air valve. Refer to WIS document AR09.50-P-8843T.
Apply contact "Santovac" from kit with paintbrush to the contact pins of the connector at the engine harness; wait approximately 10 minutes to allow it to dry.
From the kit, install the re-circulating air valve with wiring adapter and dampening.
CAUTION: The re-circulating air valve must be installed parallel/across from the Supercharger to ensure a leak proof connection . Follow steps 5 through 8 below.
Start screws only of the re-circulating air valve first, and then mount the supercharger rigidly.
Tighten front screws of the now aligned re-circulating air valve first.
Remove supercharger again. Refer to WIS document AR09.50-P-4705SVK.
Tighten rear screws of the re-circulating air valve at inter-cooler assembly.

Condition 2 in M113K : P202E stored in ME Control Unit of M113K engine.

Remedy 2 : Install re-circulating air valve wiring harness adapter part number A113 150 08 33.

PARTS INFORMATION

Qty.

Part Name

Part Number

Throttle Valve Actuator (valid for engine 112.960/961 as of engine serial no. 014852)

A112 141 03 25 ⁽¹⁾

Throttle valve actuator (valid for engine 113.992 MY 2002)

A113 141 05 25 ⁽¹⁾

Throttle Valve Actuator (valid for engine 113.990/991 & 992 as of Model Year 2003)

A113 141 06 25 ⁽¹⁾

Recirculated air flap actuator (valid for engine 113.990/991/992 as of Model Year 2003)

A113 141 07 25 ⁽¹⁾

Adapter wiring harness

A113 150 08 33 ⁽¹⁾

⁽¹⁾	Parts are in a critical supply situation and will be limited, please see the PAC weekly status report on parts availability status and delivery expectations. This report is located on the PAC website.

NOTE: The following allowable labor operations should be used when submitting a warranty claim for this repair.

IN CASE OF WARRANTY

Operation: Short test, perform (54-1011)

Throttle valve actuator (after test), replace (07-1488)

Engine compartment panel, bottom - front part, R & R (61-1071)

Engine compartment panel, bottom front, R & R (61-1077)

Ground cable - electrical system battery (separating electrical connectors), R & R (54-7989)

Super charger actuator, R & R/replace if required (09-4792)

WARRANTY INFORMATION

Damage Code	Operation Number	Time (hrs.)	Model Indicator (s)
59029 74	54 1011	0.3 hrs.	G4, M9, N5, P3, R2, T3
	07 1488	0.6 hrs.	G4, P3
	61 1071	0.4 hrs.	T3
	61 1071	0.5 hrs.	M9, N5
	61 1077	0.3 hrs.	R2
	54 7989	0.3 hrs.	T3
	09 4792 * * - includes throttle valve actuator replacement	4.2 hrs.	T3
		5.1 hrs.	M9
		5.2 hrs.	N5, R2