Starting System: Diagnosis Hyundai Tucson I

START TEST

Note. The air temperature must be between 59 and 100°F (15 and 38°C) before testing.

Recommended procedure

1. Use a starter system tester.
2. Connect and operate the equipment in accordance with the manufacturer's instructions.
3. Test and troubleshoot as described.

Alternate Procedure

1. Use the following equipment: Ammeter, 0~400A Voltmeter, 0~20V (accurate within 0.1 volt) Tachometer, 0~1,200 RPM
2. Hook up a voltmeter and ammeter as shown. NOTE: After this test, or any subsequent repair, reset the ECM/PCM to clear any codes.

Check the Starter Engagement

1. Remove the ECM (B+) fuse from the fuse/relay box.
2. Turn the ignition switch to START (III) with the shift lever in N or P position (A/T) or with the clutch pedal depressed (M/T). The starter should crank the engine. If the starter does not crank the engine, go to step 3. If it cranks the engine erratically or too slowly, go to «CHECK FOR WEAR AND DAMAGE»(ref-276687-S02345641662008011000000) .
3. Check the battery, battery positive cable, ground, starter cut relay, and the wire connections for looseness and corrosion. Test again. If the starter still does not crank the engine, go to step 4.
4. Unplug the connector from the starter.
5. Connect a jumper wire from the battery positive (+) terminal to the solenoid terminal. The starter should crank the engine. If the starter still does not crank the engine, remove it, and diagnose its internal problem. If the starter cranks the engine, go to step 6.
6. Check the ignition switch (see INSPECT IGNITION SWITCH).
7. Check the starter relay (see «INSPECTION»(ref-276687-S03585319792008011000000) ).
8. Check the A/T gear position switch (A/T) or the clutch interlock switch (M/T).
9. Check for an open in the wire between the ignition switch and starter.

INSPECT STARTER BRUSH

Brushes that are worn out, or oil-soaked, should be replaced.

Scheme 2

STARTER BRUSH HOLDER TEST

Check that there is no continuity between the (+) brush holder (A) and (-) brush holder (B). If there is continuity, replace the brush holder assembly.

Scheme 3

Scheme 4

1. Slide the overrunning clutch along the shaft. Replace if it does not slide smoothly.
2. Rotate the overrunning clutch (A) both ways. Does it lock in one direction and rotate smoothly in reverse? If it does not lock in either direction or it locks in both directions, replace it.
3. If the starter driver gear (B) is worn or damaged, replace the overrunning clutch assembly: the gear is not available separately. Check the condition of the flywheel or torque converter ring gear if the starter drive gear teeth are damaged.

Scheme 5

Scheme 6

Scheme 7

1. Remove the fuse box cover.
2. Remove the starter relay (A).
3. Inspect the relay continuity. Using an ohmmeter, check that there is continuity between terminals 2 and 4. If there is no continuity, replace the relay. Check that there is no continuity between terminals 1 and 5. If there is continuity, replace the relay.
4. Inspect the relay operation. Apply battery positive voltage across terminals 2 and 4. Using an ohmmeter, check that there is continuity between terminals 1 and 5. If there is no continuity, replace the relay.
5. Install the starter relay.
6. Install the fuse box cover.