Honda 2004 Odyssey, Service Manual

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Ignition Timing:
10°
2° BTDC (RED mark (B)) during idling in Park
or Neutral
4-16
Ignition System
Ignition Timing Inspection
A
B
1. Connect the Honda Diagnostic System (HDS) to the
data link connector (DLC) (see step 2 on page 11-3),
and check for DTC’s. If a DTC is present, diagnose
and repair the cause before inspecting the ignition
timing.
2. Start the engine. Hold the engine at 3,000 rpm with
no load shift lever in Park or Neutral, until the
radiator fan comes on, then let it idle.
3. Check the idle speed, and adjust it if necessary (see
page 11-201).
4. Follow the tester’s prompts to get the tester in the
‘‘SCS’’ mode (see the tester operator’s manual).
5. Connect the timing light to the No. 1 ignition coil
wire.
6. Aim the light toward the pointer (A) on the timing
belt cover. Check the ignition timing under a no
load conditions: headlights, blower fan, rear
window defogger, and air conditioner are not
operating.
7. If the ignition timing differs from the specification,
check the cam timing, and the top dead center
(TDC) and crankshaft position (CKP) sensors. If
necessary, substitute a known-good powertrain
control module (PCM) and recheck (see page 11-5).
8. Turn the ignition switch OFF.
9. Disconnect the HDS and the timing light.
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