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EFI system (5S-FE)

Specifications

Component Item Specification
Fuel pressure regulator Fuel pressure, at no vacuum 2.7 – 3.1 kg/cm² (38 – 44 psi, 265 – 304 kPa)
Cold start injector Resistance 2 – 4 Ω
Fuel leakage One drop or less per minute
Injector Resistance Approx. 13.8 kΩ
Injection volume 45 – 55 cc (2.7 – 3.4 cu in.)/15 sec.
Difference between each injector 5 cc (0.31 cu in.) or less
Fuel leakage One drop or less per minute
Throttle body Throttle body fully closed angle 6°

Throttle position sensor (M/T)

Throttle opening angle (from Vertical) Clearance between stop screw and lever IDL – E1 PSW – E1
— 0.50 mm (0.020 in.) Continuity No continuity
— 0.90 mm (0.035 in.) No continuity No continuity
Throttle valve fully opened — No continuity Continuity
71° — No continuity No continuity
81° — No continuity Continuity
7.5° or less — Continuity No continuity

Throttle position sensor (A/T)

Clearance between stop screw and lever Between terminals Resistance
0 mm (0 in.) VTA – E2 0.2 – 0.8 kΩ
0.50 mm (0.020 in.) IDL – E2 2.3 kΩ or less
0.70 mm (0.028 in.) IDL – E2 Infinity
Throttle valve fully opened position VTA – E2 3.3 – 10 kΩ
— VC – E2 3 – 7 kΩ

Component Item Specification
ISC valve Resistance, +B – ISCC or ISCO 19.3 – 22.3 Ω
Cold start injector time switch Resistance, STA – STJ, below 30°C (68°F) 20 – 40 Ω
Resistance, STA – STJ, above 40°C (104°F) 40 – 60 Ω
Resistance, STA – Ground 20 – 80 Ω
Fuel pressure VSV Resistance 33 – 39 Ω
EGR VSV Resistance 33 – 39 Ω
Water temp. sensor Resistance, at –20°C (–4°F) 10 – 20 kΩ
Resistance, at 0°C (32°F) 4 – 7 kΩ
Resistance, at 20°C (68°F) 2 – 3 kΩ
Resistance, at 40°C (104°F) 0.9 – 1.3 kΩ
Resistance, at 60°C (140°F) 0.4 – 0.7 kΩ
Resistance, at 80°C (176°F) 0.2 – 0.4 kΩ
Intake air temp. sensor Resistance, at –20°C (–4°F) 10 – 20 kΩ
Resistance, at 0°C (32°F) 4 – 7 kΩ
Resistance, at 20°C (68°F) 2 – 3 kΩ
Resistance, at 40°C (104°F) 0.9 – 1.3 kΩ
Resistance, at 60°C (140°F) 0.4 – 0.7 kΩ
Resistance, at 80°C (176°F) 0.2 – 0.4 kΩ
EGR gas temp. sensor (CALIF. only) Resistance, at 50°C (112°F) 69.40 – 88.50 kΩ
Resistance, at 100°C (212°F) 11.89 – 14.37 kΩ
Resistance, at 150°C (302°F) 2.79 – 3.59 kΩ

ECU

Hint

  • Perform all voltage and resistance measurements with the computer connected.
  • Verity that the battery voltage is 11 V or above with the ignition switch is ON.

Voltage

Terminals Condition STD voltage (V)
+B, +B1 – E1 IG SW ON 10 – 14
BATT – E1 — 10 – 14
M/T: IDL – E1 IG SW ON, Throttle valve open 8 – 14
M/T: PSW – E1 IG SW ON, Throttle valve fully closed (Throttle opener must be cancelled first) 4.5 – 5.5
A/T: IDL – E2 IG SW ON, Throttle valve open 8 – 14
A/T: VTA – E2 IG SW ON, Throttle valve fully closed (Throttle opener must be cancelled first) 0.8 – 1.2
A/T: VTA – E2 IG SW ON, Throttle valve fully open 3.2 – 4.2
PIM – E2 IG SW ON 3.3 – 3.9
VC – E2 IG SW ON 4.5 – 5.5
No.10, No.20 – E01, E02 IG SW ON 10 – 14

Voltage (cont'd)

Terminals Condition STD voltage (V)
THA – E2 IG SW ON, Intake air temp. 20°C (68°F) 1.7 – 3.1
THW – E2 IG SW ON, Coolant temp. 80°C (176°F) 0.3 – 0.8
STA – E1 Cranking 6 – 14
IGT – E1 Cranking or idling 0.8 – 1.2
ISCC, ISCO – E1 IG SW ON 8 – 14
W – E1 No trouble ("CHECK" engine warning light off) and engine running 8 – 14
A/C – E1 IG SW ON, Air conditioning ON 8 – 14
A/T: ACT – E1 IG SW ON, Air conditioning ON 4.5 – 5.5
T – E1 IG SW ON, Check connector TE1 – E1 not connected 10 – 14
T – E1 IG SW ON, Check connector T – E1 connected 1 or less
NSW – E1 IG SW ON, Neutral start switch P or N range 0 – 2
NSW – E1 IG SW ON, Ex. neutral start switch P or N range 6 – 14
B/K – E1 Stop light SW ON (Brake pedal depressed) 10 – 14

Resistance

Terminals Condition STD resistance (Ω)
M/T: IDL – E1 Throttle valve fully open Infinity
M/T: IDL – E1 Throttle valve fully closed (Throttle opener must be cancelled first) 0
M/T: PSW – E1 Throttle valve fully open 0
M/T: PSW – E1 Throttle valve fully closed (Throttle opener must be cancelled first) Infinity
A/T: IDL – E2 Throttle valve fully open Infinity
A/T: IDL – E2 Throttle valve fully closed (Throttle opener must be cancelled first) 2,300 or less
A/T: VTA – E2 Throttle valve fully open 3,300 – 10,000
A/T: VTA – E2 Throttle valve fully closed (Throttle opener must be cancelled first) 200 – 800
A/T: VC – E2 — 3,000 – 7,000

Resistance (cont'd)

Terminals Condition STD resistance (Ω)
THA – E2 Intake air temp. 20° (68°F) 2,000 – 3,000
THW – E2 Coolant temp. 80° (176°F) 200 – 400
G, NE – G– — 140 – 180
ISCC, ISCO – +B, +B1 — 19.3 – 22.3

Fuel cut rpm (w/ Vehicle speed 0 km/h and coolant temp. 80°C (176°F))

  • Fuel cut rpm: 1,600 rpm
  • Fuel return rpm: 1,500 rpm

Torque specifications

Part tightened kg-cm ft-lb N·m
Fuel line, Union bolt type 300 22 29
Fuel line, Flare nut type 310 22 30
Fuel pump x Fuel tank 35 30 in.-lb 3.4
Fuel sender gauge x Fuel tank 15 13 in.-lb 1.5
Fuel evaporation bent tube x Fuel tank 15 13 in.-lb 1.5
Fuel tank filler pipe x Fuel tank 35 30 in.-lb 3.4
Fuel tank band x Body 300 22 29
No.2 center crossmember x Body 300 22 29
Cold start injector x Intake manifold 95 82 in.-lb 9.3
Cold start injector pipe x Cold start injector 180 13 18
Cold start injector pipe x Delivery pipe 180 13 18
Fuel pressure regulator x Delivery pipe 55 48 in.-lb 5.4
Fuel return pipe x Fuel pressure regulator 180 13 18
Fuel pulsation damper x Delivery pipe 350 25 34
Delivery pipe x Cylinder head 130 9 13
Throttle body x Intake manifold 195 14 19