2004 DAEWOO NUBIRA battery

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Page 315 of 2643

DAEWOO NUBIRA 2004  Service Repair Manual ENGINE CONTROLS  1F – 69
DAEWOO V–121 BL4
Fuel Pump Relay Circuit Check (1.8L DOHC)
StepActionValue(s)YesNo
11.  Turn the ignition OFF for 10 seconds.
2.  Turn the ignition ON.
3.  Listen for in

Page 316 of 2643

DAEWOO NUBIRA 2004  Service Repair Manual 1F – 70IENGINE CONTROLS
DAEWOO V–121 BL4
StepNo Yes Value(s) Action
111.  Replace the fuse Ef18 or repair the wire be-
tween the fuel pump relay connector terminal
30 and the battery.
2.  Install

Page 328 of 2643

DAEWOO NUBIRA 2004  Service Repair Manual 1F – 82IENGINE CONTROLS
DAEWOO V–121 BL4
IDLE AIR CONTROL SYSTEM CHECK (1.8L DOHC)
Circuit Description
The Engine Control Module (ECM) controls the engine idle
speed with the Idle Air Control (IAC

Page 331 of 2643

DAEWOO NUBIRA 2004  Service Repair Manual ENGINE CONTROLS  1F – 85
DAEWOO V–121 BL4
IGNITION SYSTEM CHECK (1.4L/1.6L DOHC)
Circuit Description
The Electronic Ignition (EI) system uses a waste spark
method of spark distribution. In this ty

Page 333 of 2643

DAEWOO NUBIRA 2004  Service Repair Manual ENGINE CONTROLS  1F – 87
DAEWOO V–121 BL4
StepNo Yes Value(s) Action
16Check the wire between the CKP sensor connector
terminal 1 and the ECM connector terminal 85 for an
open or short.
Is the pro

Page 334 of 2643

DAEWOO NUBIRA 2004  Service Repair Manual 1F – 88IENGINE CONTROLS
DAEWOO V–121 BL4
IGNITION SYSTEM CHECK (1.8L DOHC)
Circuit Description
The Electronic Ignition (EI) system uses a waste spark
method of spark distribution. In this type of

Page 337 of 2643

DAEWOO NUBIRA 2004  Service Repair Manual ENGINE CONTROLS  1F – 91
DAEWOO V–121 BL4
StepNo Yes Value(s) Action
21Measure the voltage between the CKP sensor con-
nector terminal 2 and ground.
Is the voltage within the value specified?1.3

Page 339 of 2643

DAEWOO NUBIRA 2004  Service Repair Manual ENGINE CONTROLS  1F – 93
DAEWOO V–121 BL4
ENGINE COOLING FAN CIRCUIT CHECK – DUAL FAN
(1.4L/1.6L DOHC)
Circuit Description
The engine cooling fan circuit operates the main cooling
fan and the au