240 L4-2.3L SOHC VIN 88 B230F (1986)
Engine Control Module: All Technical Service Bulletins
LH Fuel Injection Control Unit - Exchange
MODEL
GROUP
NUMBER
200/700
28
105
TITLE
EXCHANGE FUEL INJECTION
CONTROL UNITS
1985-90
MARKET
DATE
US and Canada
August 1991
REFERENCE:
TP 31354/2 (ENGLISH); 09/90; LH FUEL INJECTION 2.4
TP 31140/2 (ENGLISH); 09/87; B230F LH FUEL INJECTION 2.2
TP 31454/1 (ENGLISH); 06/89; B230FT LH FUEL INJECTION 2.2
TP 31074/1 (ENGLISH); 11/87; B230F LH FUEL INJECTION 2.2
TP 31361/1 (ENGLISH); 12/88; B23OF LH FUEL INJECTION 2.4
SB 23-204/708; 04/89; COLD START
SB 25-202,/704; 05/91; THROTTLE SWITCH/MECHANISM
SB 28-102; 05/91; E-PROM EXCHANGE
This bulletin supercedes SB 23-138; 01/91.
LH Fuel Injection Control Unit Exchange
The following exchange LH control units have been introduced as spare parts:
LH CONTROL UNITS
Application
M/Y
Production p/n
Exchange p/n
LH 2.2; B230F
1985-88
1389094-2
5003707-6
LH 2.2; B230FT
1985-89
1367487-4
5003765-4
LH 2.4; B230F; 49-state
1989-->
3517407-7
5003782-9
LH 2.4; B230FT; 49-state
1990-->
3517370-7
5003787-8
LH 3.1; B230F; 49-state
1990-->
3517885-4
5003780-3
Note:
To rectify cold start complaints on engines with LH 2.4, complete control units may only be replaced on model years 1989-90 with 3-digit
BOSCH production date codes (see illus.) of 949 or lower. ECU's with a date code of 9SO through 071 must have the E-prom replaced
instead. Refer to service builetin.25-202/704.
The following procedure must be observed when replacing a control unit.
1).
If the cold start kit, p/n 3531106-7, has been installed, IT MUST BE REMOVED prior to installing the exchange control unit. Programming to
improve cold starting is already included in replacement control units.
2).
Make sure that all available diagnostic procedures have been performed, including checks of basic engine parameters such as compression, air and
fuel filters, spark plugs, electrical connectors, etc. Ensure that other possible problem sources have been ruled out. Procedures for fault tracing LH
