Chrysler Conquest 1988 Service Manual page 849

FUEL (EC3 SYSTEM
- Service Adiustment Procedures
14-55
ECI SYSTEM CHECK PROCEDURE CHART
(Use Harness Connector - MD998452)
STEP 1 (Connect white color connectors labeled "CHECKER" of harness connector to ECI checker)
ECI Checker
Operation ECU Test
Check Item Terminal # Condition Specification
Select Check Checked
Switch
Switch
1 Power supply 51 Ignition switch IIV - 13v
"LOCK" + "ON"
"A"
2 ignition pulse 1 Ignition switch "LOCK" -+ "START" 4v - IOV
3 Intake air 5 Ignition switch 0°C (32°F)
3.4V - 3.6V
temperature sensor "LOCK" + "ON"
20°C (68°F) 2.5V - 2.7V
40°C (104°F) 1.7v - 1.9v
80°C (176°F) 0.6V - 0.8V
4 Engine coolant 6 Ignition switch 0°C (32°F) 3.4V - 3.6V
temperature sensor
"LOCK" + "ON"
20°C (68°F)
2.5V - 2.7V
40°C (104°F) 1.5v - 1.7v
80°C (176°F) 0.5v - 0.7v
5 Power supply for 10
Ignition switch
4.5v - 5.5v
sensor "LOCK" + "ON"
6 Throttle position 15 Ignition switch Accelerator fully closed
0.4v - 0.7v
sensor
"LOCK" --> "ON"
(Warm engine) Accelerator fully opened
4.5v - 5.5V
7 Motor position 3 Ignition switch After 15 seconds 0.8V - 1.2V
sensor "LOCK" --f "ON"
8 Idle position switch 7 Ignition switch Accelerator fully closed
OV - 0.6V
"LOCK" -+ "ON"
Accelerator fully opened 8V - 13V
9 Cranking signal 55 Ignition switch Over 8V
n LOCK" + "START"
10 Vehicle speed sensor
reed switch
19 Start engine and operate vehicle slowly in 1 st or OV - 0.6V
DRIVE range
(pul&es)
Ove! 2V
11 Air conditioner switch 56 Ignition switch $irir;;ditioner switch
OV - 0.6V
"LOCK" -+ "ON"
+ir,n$tioner switch IIV - 13v
12 Inhibitor switch 58 Ignition switch
At "P" or "N" range OV - 0.6V
"LOCK" + "ON"
At "D" range IIV - 13v
NOTE
*I : ON means compressor clutch engaged.