Honda Civic. Manual — part 356

2006-08 ELECTRICAL

Charging System (K20Z3) - Civic (All Except Si)

COMPONENT LOCATION INDEX

2008 Honda Civic GX

2006-08 ELECTRICAL Charging System (K20Z3) - Civic (All Except Si)

2008 Honda Civic GX

2006-08 ELECTRICAL Charging System (K20Z3) - Civic (All Except Si)

Fig. 1: Locating Charging System Components (K20Z3)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

SYMPTOM TROUBLESHOOTING INDEX

SYMPTOM TROUBLESHOOTING INDEX

Symptom

Diagnostic procedure

Charging system indicator does not
come on with the ignition switch
ON (II)

TROUBLESHOOT THE CHARGING
SYSTEM INDICATOR CIRCUIT

Charging system indicator stays on

1. Check for PGM-FI DTCs (see

GENERAL
TROUBLESHOOTING
INFORMATION ).

2. Troubleshoot the charging system

indicator circuit (see CHARGING
SYSTEM INDICATOR CIRCUIT
TROUBLESHOOTING ).

3. Check for a broken drive belt (see

DRIVE BELT INSPECTION ).

4. Check the drive belt auto-tensioner

(see DRIVE BELT AUTO-
TENSIONER INSPECTION ).

Battery discharged

1. Check for excessive parasitic

electrical current draw with the
ignition switch off, and the key
removed. The multiplex control unit
may take up to 10 minutes to turn off
(sleep mode) for some models.

2. Check for a broken drive belt (see

DRIVE BELT INSPECTION ).

3. Check the drive belt auto-tensioner

(see DRIVE BELT AUTO-
TENSIONER INSPECTION ).

2008 Honda Civic GX

2006-08 ELECTRICAL Charging System (K20Z3) - Civic (All Except Si)

CIRCUIT DIAGRAM

4. Troubleshoot the alternator and

regulator circuit (see
ALTERNATOR AND
REGULATOR CIRCUIT
TROUBLESHOOTING ).

5. Check for a poor connection at the

battery terminal.

6. Test the battery (see BATTERY

TEST ).

Battery overcharged

1. Troubleshoot the alternator and

regulator circuit (see
ALTERNATOR AND
REGULATOR CIRCUIT
TROUBLESHOOTING ).

2. Test the battery (see BATTERY

TEST ).

2008 Honda Civic GX

2006-08 ELECTRICAL Charging System (K20Z3) - Civic (All Except Si)

Fig. 2: Charging System - Circuit Diagram
Courtesy of AMERICAN HONDA MOTOR CO., INC.

CHARGING SYSTEM INDICATOR CIRCUIT TROUBLESHOOTING

1. Turn the ignition switch ON (II).

Does the charging system indicator come on?

2008 Honda Civic GX

2006-08 ELECTRICAL Charging System (K20Z3) - Civic (All Except Si)