SERVICE MANUAL
  Applies to: Hyundai Coupe/Tiburon 1998-2001
GROUP
Engine Electrical System Ignition System
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TROUBLESHOOTING 
IGNITION SYSTEM
Trouble condition
Probable cause
Remedy
Engine will not start or is hard to start. (Cranks OK)
Ignition coil faulty
Inspect ignition coil

Camshaft position sensor faulty
Replace camshaft position sensor

Spark plug cable faulty
Inspect spark plug cable

Spark plugs faulty
Replace plugs

Ignition wiring disconnected or broken
Inspect wiring
Rough idle or stalls
Spark plugs faulty
Replace plugs

Ignition wiring faulty
Inspect wiring

Ignition coil faulty
Inspect ignition coil
Engine hesitates/poor acceleration
Spark plugs faulty
Replace plugs

Ignition wiring faulty
Inspect wiring
Poor mileage
Spark plugs faulty
Replace plugs
CHARGING SYSTEM
Trouble condition
Probable cause
Remedy
Charging warning indicator does not light with ignition switch "ON" and engine off
Fuse blown
Check fuses

Bulb burned out
Replace bulb

Wiring connection loose
Tighten loose connections

Electronic voltage regulator faulty
Replace voltage regulator
Charging warning indicator does not go out with engine running (Battery requires frequent recharging)
Drive belt loose or worn
Adjust tension or replace drive belt

Battery cables loose, corroded or worn
Repair or replace cables

Fuse blown
Check fuses

Fusible link blown
Replace fusible link
Electronic voltage regulator or generator faulty
Test generator

Wiring faulty
Repair wiring
Discharge battery
Drive belt loose or worn
Adjust tension or replace drive belt

Wiring connection loose or open circuit
Tighten loose connection or repair wiring

Fusible link blown
Replace fusible link

Poor grounding
Repair

Electronic voltage regulator or generator faulty
Test generator

Worn battery
Replace battery
Overcharge
Electronic voltage regulator faulty
Replace voltage regulator

Voltage sensing wire faulty
Repair wire
CRUISE CONTROL SYSTEM BEFORE TROUBLESHOOTING

Before commencing troubleshooting, inspect each of the following sections, and if there is an abnormality, carry out a repair.

  1. Check if the installation and connection routes of the cables and vacuum hoses of the cruise vacuum pump assembly, actuator and pulley assembly are all normal.

  1. Check if the pulley assembly and the movement of all cables are all working smoothly.

  1. Check if there is no excessive play or tension in each cable.

SELF-DIAGNOSIS CHECKING

Self-diagnosis checking is performed when there has been an automatic cancellation, without cancel switch operation.

  1. The following methods can be used for checking the diagnosis. Note that the date link connector is located in the fuse box.

    1. If an indicator lamp is used, connect directly between the ground terminal and the terminal for CC of the data link connector. It is possible to discover which circuit is the cause of the cancellation by verifying the indication shown by the indicator lamp with the display patterns shown on the next page.
  1. All diagnostic trouble codes are stored so that it is possible to check if a problem occurred in the past or not until disconnecting the battery terminals, even when the ignition key is turned to OFF.

    CC: Cruise control

Diagnosis display patterns and codes
CODE NO.
DISPLAY PATTERNS
(Use with scan tool)
PROBABLE CAUSE
CHECK ITEMS
01
(Vacuum pump)
Abnormal condition of auto cruise vacuum pump drive system
  1. Vacuum pump assembly
  2. CCM
  3. Relevant wiring
02
(Speed sensor)
Abnormal condition of vehicle speed signal system
  1. Vehicle speed sensor
  2. Relevant wiring
03
(Low speed limit)
Vehicle speed less than 40km/h
|
04
(Redundant brake)
Vehicle speed less than memory speed by 15km/h
|
05
(Control switch)
SET and RESUME switches on simultaneously
|
06
(Control module)
Abnormal condition of CCM
  1. CCM
  2. Relevant wiring
07
(Cancel signal)
Cancel switch ON
  1. Brake switch
  2. P/N position switch
  3. Clutch switch
  4. Relevant wiring
TROUBLESHOOTING PROCEDURES

First, select the applicable malfunction symptom from the Trouble Symptom Charts. Conduct the self-diagnostic test following the directions on the charts. Determine the condition of all function circuits.

CAUTION
Because the computer (self-diagnosis) memory data will be erased when the system is unintentionally cancelled during fixed-speed driving, the ignition switch and/or the cruise main switch of the CC system should not be switched OFF, and the battery should not be disconnected.
  1. Make the following preliminary inspections.

    • Check that the installation of the actuator, accelerator cable are correct, and that the cables and links are securely connected.
    • Check that the accelerator pedal moves smoothly.
    • Adjust the cable so there is not excessive tension or excessive play on the accelerator cable.
    • Check that the CCM, actuator, cruise main and control switch and the connector of each cancel switch are connected securely.
  1. Check in the sequence indicated in the Trouble Symptom Chart.

  1. If these checks indicate a normal condition, replace the cruise control module.

TROUBLE SYMPTOM CHARTS
Trouble Symptom 1
Trouble Symptom 2
Trouble symptom
Probable cause
Remedy
The set vehicle speed varies greatly upward or downward "Surging" (repeated alternating acceleration and deceleration) occurs after setting
Malfunction of the vehicle speed sensor circuit
Repair the vehicle speed sensor system, or replace the part

Malfunction of the speedometer cable or speedometer drive gear


Cruise vacuum pump circuit poor contact
Repair the actuator system, or replace the part

Malfunction of the CCM
Replace the CCM
Trouble Symptom 3
Trouble symptom
Probable cause
Remedy
The CC system is not cancelled when the brake pedal is depressed
Damaged or disconnected wiring of the stop lamp switch
Repair the harness or replace the stop lamp switch

Cruise vacuum pump drive circuit short-circuit
Repair the harness or replace the vacuum pump

Malfunction of the CCM
Replace the CCM
Trouble Symptom 4
Trouble symptom
Probable cause
Remedy
The CC system is not cancelled when the shift lever is moved to the "N" position (It is cancelled, however, when the brake pedal is depressed
Damaged or disconnected wiring of inhibitor switch input circuit
Repair the harness or repair or replace the inhibitor switch

Improper adjustment of inhibitor switch


Malfunction of the CCM
Replace the CCM
Trouble Symptom 5
Trouble symptom
Probable cause
Remedy
Cannot decelerate (coast) by using the SET switch
Temporary damaged or disconnected wiring of SET switch input circuit
Repair the harness or replace the SET switch

Actuator circuit poor contact
Repair the harness or replace the actuator

Malfunction of the actuator


Malfunction of the CCM
Replace the CCM
Trouble Symptom 6
Trouble symptom
Probable cause
Remedy
Cannot accelerate or resume speed by using the RESUME switch
Damaged or disconnected wiring, or short circuit, or RESUME switch input circuit
Repair the harness or replace the RESUME switch

Actuator circuit poor contact
Repair the harness or replace the actuator

Malfunction of the actuator

Malfunction of the CCM
Replace the CCM
Trouble Symptom 7
Trouble symptom
Probable cause
Remedy
CC system can be set while driving at a vehicle speed of less than 40km/h (25mph), or there is no automatic cancellation at that speed
Malfunction of the vehicle-speed sensor circuit
Repair the vehicle speed sensor system, or replace the part

Malfunction of the speedometer cable or the speedometer drive gear


Malfunction of the CCM
Replace the CCM
Trouble Symptom 8
Trouble symptom
Probable cause
Remedy
The cruise main switch indicator lamp does not illuminate (But CC system is normal)
Damaged or disconnected bulb of cruise main switch indicator lamp
Repair the harness or replace the part.

Harness damaged or disconnected

Trouble Symptom 9
Trouble symptom
Probable cause
Remedy
Malfunction of control function by ON/OFF switching of idle switch
Malfunction of circuit related to idle switch function
Repair the harness or replace the part

Malfunction of the CCM

Trouble Symptom 10
Trouble symptom
Probable cause
Remedy
Overdrive is not cancelled during fixed speed driving
Malfunction of circuit related to over-drive cancellation, or malfunction of CCM
Repair the harness or replace the part
No shift to overdrive during manual driving