Daewoo NUBIRA, User Manual

Page: 543 / 685

1F – 38 I ENGINE CONTROLS
DAEWOO V–121 BL4
Step No Yes Value(s) Action
11
1. Turn the ignition OFF.
2. Disconnect the Crankshaft Position (CKP) sen-
sor connector.
3. Turn the ignition ON.
4. Measure the voltage between the CKP connec-
tor terminals 1 and 3.
Does the voltage measure near the value specified?
1.08 volts Go toStep 12 Go toStep 13
12 Measure the voltage between the CKP connector
terminals 2 and 3.
Does the voltage measure near the value specified? 1.08 volts Go toStep 19 Go toStep 14
13 Measure the voltage between the CKP connector
terminals 1 and ground.
Does the voltage measure near the value specified? 1.08 volts Go toStep 15 Go toStep 16
14 Measure the voltage between the CKP connector
terminals 2 and ground.
Does the voltage measure near the value specified? 1.08 volts Go toStep 15 Go toStep 17
15 Check for an open or short in the wire between the
CKP connector terminal 3 and ground.
Is the problem found? Go toStep 18 Go toStep 33
16 Check for an open or short in the wire between the
CKP connector terminal 1 and the powertrain control
module (PCM)/engine control module (ECM) con-
nector terminal C6.
Is the problem found? Go toStep 18 Go toStep 33
17 Check for an open or short in the wire between the
CKP connector terminal 2 and the PCM/ECM con-
nector terminal C5.
Is the problem found? Go toStep 18 Go toStep 33
18 Repair the wiring as needed.
Is the repair complete? Go toStep 2
19
1. Disconnect the electronic ignition (EI) system
ignition coil connector to prevent the vehicle
from starting.
2. Measure the voltage at the PCM/ECM connec-
tor terminal C6 by backprobing the PCM/ECM
connector.
Are the voltage readings near the values specified?
1.08 v with igni-
tion ON, 1.20 v
during cranking
Go toStep 20 Go toStep 21
20 Measure the voltage at the PCM/ECM connector
terminal C5 by backprobing the PCM/ECM connec-
tor.
Are the voltage readings near the values specified? 1.08 v with igni-
tion ON, 1.20 v
during cranking
Go toStep 22 Go toStep 21
21 Replace the CKP sensor.
Is the repair complete? Go toStep 2
22
1. Turn the ignition OFF.
2. Disconnect the electrical connector at the EI
system ignition coil.
3. Connect a test light between terminal D of the
EI system ignition coil connector and ground.
4. Turn the ignition ON.
Is the test light on?
Go toStep 23 Go toStep 24