Honda 2001 Engine Electrical04-1
Ignition System04-18 		Previous Page Next Page


Ignition System04-18

Component Location Index


1

SPARK PLUG

Inspection, page 04-23

2

IGNITION COIL

Ignition Timing Inspection, page 04-20 Removal/Installation, page 04-21 Troubleshooting, page 04-21




Circuit Diagram04-19


Ignition Timing Inspection04-20

Special Tools Required

DLC pin box 07WAJ-0010100

  1. Start the engine. Hold the engine at 3,000 rpm (min-1) with no load (in Park or Neutral) until the radiator fan comes on, then let it idle.
  2. Check the idle speed (see page 11-148) .
  3. Short the SCS terminal to ground by using the DLC pin box: Connect the DLC pin box (A) to the Data Link Connector (DLC) (16P) (B), then connect the No. 4 and No. 9 terminals on the DLC pin box with a jamper wire (C), and push the switch.


  4. Short the SCS terminal to ground by using the Honda PGM Tester: Connect the Honda PGM tester (A) to the data link connector (16P) (B).


  5. Connect the timing light to the service loop.


  6. Point the light toward the pointers (A) on the chain case. Check the ignition timing under no load conditions: headlights, blower fan, rear window defogger, and air conditioner are not operating.

Ignition Timing:

M/T: 8° ± 2° BTDC (RED mark (B)) during idling
in neutral

A/T: 8° ± 2° BTDC (RED mark (B)) during idling
in [P] or [N]


  1. If the ignition timing differs from the specification, replace the Engine Control Module (ECM)/Powertrain Control Module (PCM) (see page 11-4) .
  2. Disconnect the special tool/Honda PGM Tester and the timing light.

Ignition Coil Removal/Installation04-21

  1. Remove the ignition coil cover (A), then remove the ignition coils (B).


  2. Install the ignition coils in the reverse order of removal.

Ignition Coil Troubleshooting04-21

  1. Remove the four ignition coils (see page 04-21) .
  2. Remove the spark plugs from the cylinder head, and inspect the spark plug (see page 04-23) .

Is the spark plug OK?

Yes : Go to step 3.

No : Replace the spark plug.

  1. Disconnect the four injector connectors (see page 11-117) .
  2. Install the spark plugs on the ignition coils.
  3. Connect the ignition coil connector, and connect the spark plug on the ground.
  4. With the shift lever in [N] or [P] (A/T), turn the ignition switch to start (III), and check the spark.

Does the plug spark?

Yes : Ignition coil is OK.

No : Go to step 7.

  1. Substitute a known-good ignition coil, and recheck the spark.

Does the plug spark?

Yes : Replace the original ignition coil.

No : Go to step 8.

  1. Disconnect the ignition coil 3P connector.
  2. Turn the ignition switch ON (II).
  3. Measure voltage between the ignition coil 3P connector terminal No. 3 and body ground.

IGNITION COIL 3P CONNECTOR


Wire side of female terminals

Is there battery voltage?

Yes : Go to step 11.

No : Repair open in the wire between ignition coil and No. 1 (15A) fuse in the under-dash fuse/relay box.

Ignition Coil Troubleshooting (cont'd)04-22

  1. Turn the ignition switch OFF.
  2. Check for continuity between the ignition coil 3P connector terminal No. 2 and body ground.

IGNITION COIL 3P CONNECTOR


Wire side of female terminals

Is there continuity?

Yes : Go to step 13.

No : Repair open in the wire between the ignition coil and G101.

  1. Disconnect the negative cable from the battery.
  2. Disconnect Engine Control Module (ECM)/Powertrain Control Module (PCM) connector A (31P).
  3. Check for continuity between body ground and following ECM/PCM connector terminal.
  4. A27 (No. 4 ignition coil)
  5. A28 (No. 3 ignition coil)
  6. A29 (No. 2 ignition coil)
  7. A30 (No. 1 ignition coil)

ECM/PCM CONNECTOR A (31P)


Wire side of female terminals

Is there continuity?

Yes : Repair short in the wire between the ECM/PCM and the ignition coil.

No : Go to step 16.

  1. Connect the ignition coil 3P connector terminal No. 1 and body ground with a jumper wire.

IGNITION COIL 3P CONNECTOR


Wire side of female terminals

  1. Check for continuity between body ground and following ECM/PCM connector terminal.
  2. A27 (No. 4 ignition coil)
  3. A28 (No. 3 ignition coil)
  4. A29 (No. 2 ignition coil)
  5. A30 (No. 1 ignition coil)

ECM/PCM CONNECTOR A (31P)


Wire side of female terminals

Is there continuity?

Yes : Substitute a known-good ECM/PCM, and recheck (see page 11-5).

No : Repair open in the wire between the ECM/PCM and the ignition coil.

Spark Plug Inspection04-23

  1. Inspect the electrodes and ceramic insulator.
  2. Burned or worn electrodes may be caused by:
  3. Advanced ignition timing
  4. Loose spark plug
  5. Plug heat range too hot
  6. Insufficient cooling
  7. Fouled plug may be caused by:
  8. Retarded ignition timing
  9. Oil in combustion chamber
  10. Incorrect spark plug gap
  11. Plug heat range too cold
  12. Excessive idling/low speed running
  13. Clogged air cleaner element
  14. Deteriorated ignition coils


  15. Check the electrode gap (A). If the gap is over the standard, adjust the gap with suitable gapping tool.

Electrode Gap:

Standard (New): 1.0 - 1.1 mm
(0.039 - 0.043 in.)


  1. Replace the plug at the specified interval, or if the center electrode is rounded (A). Use only the spark plugs listed below.

Spark Plugs:

ZFR6K-11 (NGK)

KJ20DR-M11 (DENSO)


  1. Apply a small quantity of anti-seize compound to the plug threads, and screw the plugs into the cylinder head finger-tight. Then torque them to 18 N·m (1.8 kgf·m, 13 lbf·ft).

Honda 2001 Engine Electrical04-1
Ignition System04-18 		Previous Page Next Page