Honda Ridgeline. Manual — part 16
03
04
−
−
−
−
YES
NO
YES
NO
4-21
IGNITION COIL RELAY 4P SOCKET
IGNITION COIL RELAY 4P SOCKET
MRLY (RED/YEL)
PCM CONNECTOR A (44P)
9. Check for continuity between ignition coil relay 4P
socket terminal No. 3 and body ground.
Repair short in the wire between ignition coil
relay 4P socket terminal No. 3 and the PCM (A6).
Go to step 10.
10. Check for continuity between ignition coil relay 4P
socket terminal No. 3 and PCM connector terminal
A6.
The system is OK at this time. Check for
loose or poor connections at the ignition coil relay
and the PCM (A6).
Repair open in the wire between ignition coil
relay 4P socket terminal No. 3 and the PCM (A6).
Terminal side of female terminals
Terminal side of
female terminals
Terminal side of
female terminals
Is ther e continuity?
Is ther e continuity?
01
02
03
SJC8A00A26100055901MAAT00
−
−
Electrode Gap
Standard (New): 1.0
1.1 mm (0.039
0.043 in.)
Spark Plugs
NGK:
IZFR5K-11
DENSO: SKJ16DR-M11
4-22
Ignition System
Spark Plug Inspection
• Improper gap
• Oil-fouling
• Carbon deposits
• Cracked center
electrode insulator
Worn or deformed
electrodes
Damaged
gasket
Cracked
insulator
A
A
1. Remove the spark plugs and inspect the electrodes
and the ceramic insulator.
• Burned or worn electrodes may be caused by:
– Advanced ignition timing
– Loose spark plug
– Plug heat range too hot
– Insufficient cooling
• Fouled plugs may be caused by:
– Retarded ignition timing
– Oil in combustion chamber
– Incorrect spark plug gap
– Plug heat range too cold
– Excessive idling/low speed running
– Clogged air cleaner element
– Deteriorated ignition coils
2. If the spark plug electrode is dirty or contaminated,
clean the electrode with a plug cleaner.
NOTE:
• Do not use a wire brush or scrape the iridium
electrode since this will damage the electrode.
• When using a sand blaster spark plug cleaner, do
not clean for more than 20 seconds to avoid
damaging the electrode.
3. Replace the spark plug if the gap is out of
specification.
NOTE: Do not adjust the gap of iridium tip plugs.
4. Replace the plug at the specified interval, or when
the center electrode is rounded (A). Use only the
listed spark plugs.
5. Apply a small amount of anti-seize compound to
the plug threads, and screw the plugs into the
cylinder head, finger-tight. Torque them to 18 N·m
(1.8 kgf·m, 13 lbf·ft).
*01
SJC8A00A14100000000DAAT00
4-23
Charging System
Component Location Index
BATTERY
DRIVE BELT
TENSIONER PULLEY
CHARGING SYSTEM INDICATOR
(In the gauge control module)
UNDER-HOOD FUSE/RELAY BOX
(Has built-in ELECTRICAL LOAD
DETECTOR (ELD) UNIT)
ALTERNATOR
AUTO-TENSIONER
Test, page 22-74
Inspection, page 4-31
Replacement, page 4-31
Replacement, page 4-33
Removal and Installation, page 4-34
Overhaul, page 4-36
Inspection, page 4-32
Replacement, page 4-33
SJC8A00A14100000000HBAT01
Symptom
Diagnostic procedure
Also check for
4-24
Charging System
Symptom Troubleshooting Index
Charging system
indicator does not come
on with the ignition
switch ON (II)
Troubleshoot the charging system indicator circuit
(see page 4-26).
Charging system
indicator stays on
1.
2.
3.
Troubleshoot the charging system indicator circuit
(see page 4-26).
Check for a broken drive belt (see page 4-31).
Check the drive belt auto-tensioner (see page 4-32).
Battery discharged
1.
2.
3.
4.
5.
6.
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.
Check for a broken drive belt (see page 4-31).
Check the drive belt auto-tensioner (see page 4-32).
Troubleshoot the alternator and regulator circuit
(see page 4-28).
Check for a poor connection at the battery terminal.
Test the battery (see page 22-74).
Battery overcharged
1.
2.
Troubleshoot the alternator and regulator circuit
(see page 4-28).
Test the battery (see page 22-74).
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