Engine Control - DTC Extraction Procedure Changed
83toyota3REFERENCE: ENGINE
NUMBER: 010
DATE: 5-13-83
MODEL: SV
TITLE 2S-E DIAGNOSTIC SYSTEM CHANGES
The method of checking the diagnostic system output codes has been changed through a revised combination meter circuit.
PRODUCTION EFFECTIVE:
From Frame Number Production Date
JT2SV11L*D0011775 February 1983
PART NUMBER INFORMATION:
Previous Part Number New Part Number Part Name
83247-32230 Same Plate sub-assembly combination
Meter circuit w/o tachometer
83247-32250 Same Plate sub-assembly combination
Meter circuit w/tachometer
When diagnosing the EFI system on a vehicle prior to the production modification, remove the 7.5 A CHG fuse in the fuse box of the engine compartment to operate the "CHECK ENGINE" warning light for diagnostic codes.
Note: In the event that there is abnormality in the EFI system, the "CHECK ENGINE" warning light will go on to alert the driver, regardless of this production modification.
Output of Diagnostic Codes
To obtain the output of diagnostic codes prior to the production modifications, proceed as follows:
1. Precheck
(a) Battery voltage above 11 volts
(b) Throttle valve fully closed (throttle position sensor IDL points closed)
(c) Transmission in neutral position
(d) Accessory switches OFF
(e) Engine at normal operating temperature
2. Remove the 7.5 A fuse for CHG
3. Turn the ignition switch to ON. Do not start the engine.
4. Using a service wire, short terminals T-E1 of the check engine connector as illustrated in the repair manual.
5. Read the diagnostic code as indicated by the number of flashes of the "CHECK ENGINE" warning light. Please refer to the CAMRY repair manual (Pub. No. 36210A) for diagnostic code.
The procedure for obtaining diagnostic codes after production modification is the same as above except the 7.5 A charge fuse is not removed.