Modification Of Engine Control Module (TS 4-18 07294(R))

WARNING: This page is about the Swift GA, 2D Hatchback, Automatic, which is a different variant/trim than selected.

Publication date: 1970-01-01
Reference number: TS 4-18 07294(R)

MODIFICATION OF ENGINE CONTROL MODULE

TECHNICAL SERVICE BULLETIN

Reference Number(s): TS 4-18 07294(R), Date of Issue:

MODIFICATION OF THE ENGINE CONTROL MODULE (ECM)

Model(s): 1992-93 Suzuki Swift - All Except GT (See Description Below)

Bulletin No.: TS 4-18 07294(R)

Division: Automotive

Category: Technical

Section Title: Engine

CONDITION

Modification of target engine idle speed.

CAUSE

Factory modification.

CORRECTION

When replacing the ECM, use parts as listed in this bulletin.

REVISION

Correction in ECM part number.

This bulletin is to inform you of the modification of the ECM used in the 1993 Swift (except GT). The effective time of this modification varies depending on the vehicle specifications and the plant where the vehicle was produced. The appropriate effective dates are as follows:

December 1992 .. California and Federal specification M/T, produced in Japan. California and Federal specification with A/T, produced in Japan and Canada.

February 1993 .. California and Federal specification with M/T, produced in Canada.

MODIFICATION DETAIL

FOR M/T VEHICLES

The target engine idle speed for the ECM with the A/C OFF has been modified as described below. However, the IAC duty cycle adjustment value has remain unchanged.

FOR A/T VEHICLES

Due to partial modification of the ECM calibration, the IAC duty cycle adjustment value with the A/C off and the gear selector in "Park" or "Neutral" has been changed, as described below. However, the engine idle speed has remained unchanged.

When checking and adjusting the idle speed and IAC duty cycle equipped with the late type ECM, be sure to turn on the headlights.

NOTE: The target idle speed of the M/T vehicle with the A/C off and the IAC duty cycle value of the A/T vehicle with the A/C off will vary depending on whether the ECM installed in the vehicle is an early type or a late type.

INSPECTION AND ADJUSTMENT

M/T VEHICLES

Use the specifications indicated on the vehicle's underhood emission control label for proper engine idle speed adjustment.

A/T VEHICLES

Identify whether the ECM in the vehicle is an early type or a late type by referring to the chart at the end of this bulletin.
Follow the adjustment procedure of the IAC that is appropriate for that ECM.

Fig 1: IAC ADJUSTMENT PROCEDURE

PARTS SUPPLY DATA

PARTS INFORMATION

REF #	PART NAME	LATE PART NO	EARLY PART NO.	#	SUPPLY OF SPARE PARTS
1	ECM (Federal spec. M/T vehicle made in Japan)	3392063E12	(* )3390063810	1	Late only after early stock is depleted.
---	ECM (Federal spec. A/T vehicle made in Japan)	3392063E22	33920 63E23	1	---
---	ECM (Calif. spec. M/T vehicle made in Japan)	3392662E12	(* )3390062810	1	---
---	ECM (Calif. spec. A/T vehicle made in Japan)	3392062E22	33920 62324	1	---
---	ECM (Federal spec. M/T vehicle made in Canada)	3392063E30	(* )3390063820	1	---
---	ECM (Federal spec. A/T vehicle made in Canada)	3392063E40	33920 63E41	1	---
---	ECM (Calif. spec. M/T vehicle made in Canada)	3392063E50	(* )3390063830	1	---
---	ECM (Calif. spec. A/T vehicle made in Canada)	3392063E60	33920 63E62	1	---
INTERCHANGEABILITY (O:OK, X:NO) Early --X- Late Early -O-- Late

NOTE: The mark (* ) attached to the ECM part number means that a late type emission control label is included. When you place an order for these ECM's designated with this mark, the late type ECM is supplied with a late type emission control label. Therefore, if the ECM you're replacing is the early type, replace it with the late type ECM and install the new emission control label included with the new ECM.

Please note that these Emisison Control Labels are not to be supplied "over-the-counter". See Service Administration Bulletin SA-08, "Sale of Emission Control Labels" for more details.

When replacing the early type ECM with the late type, be sure to check the idle speed and IAC duty cycle as described in this bulletin. If any of the readings vary with those listed in this bulletin, follow the adjustment procedure as described in the Service Manual to obtain the values listed in this bulletin.

EARLY/LATE TYPE IDENTIFICATION

To identify the type of ECM that you need, follow these procedures:

M/T VEHICLE

Engine idle speed listed on the emissions label should be 750 +/- 50 rpm.

A/T VEHICLE

Refer to the ECM name plate part number given in the list below. This method is also applicable to the t M/T vehicle whose emission control label is illegible. Refer to Fig 2 for the ECM name plate location.

Fig 2: ECM Name Plate Location

ECM APPLICATION CHART

Vehicle Spec	Vehicle Spec	TRANS	Early Type ECM No.	Late Type ECM No.
Made in Japan	Federal	M/T	33920-63E12	33900-63810
Made in Japan	Federal	A/T	33920-63E22	33920-63E23
---	California	M/T	33920-63E12	33920-62E14
---	California	A/T	33920-63E22	33920-62E24
Made In Canada	federal	M/T	33920-63E30	33920-63E31
MADE In Canada	Federal	A/T	33920-63E40	33920-63E41
---	California	M/T	33920-63E50	33920-63E52
---	California	A/T	33920-63E60	33920-63E62