Honda Odyssey 2004. Manual — part 21
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4-4
Starting System
Circuit Diagram
IGNITION SWITCH
BAT
ST
No.41 (120A)
No.42 (50A)
BATTERY
UNDER HOOD FUSE/RELAY BOX
BLU/WHT
BLK/WHT
YEL
BLK
STARTER
S
B
M
SOLENOID
BLK/YEL
WHT
BLK
(Closed : P and N position)
No.13 (7.5A)
BLU/ORN
G101
ST HOT in START (III)
•
•
DRIVER’S
UNDER DASH
FUSE/RELAY BOX
STARTER
CUT
RELAY
TRANSMISSION
RANGE SWITCH
PCM
PGM FI
MAIN RELAY
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Alternate Procedure
YES
NO
YES
NO
YES
NO
4-5
Starter Circuit Troubleshooting
B
A
NOTE:
• Air temperature must be between 59° and 100°F (15°
and 38°C) during this procedure.
• After this test, or any subsequent repair, reset the
powertrain control module (PCM) to clear any
diagnostic trouble codes (DTCs) (see page 11-4).
• The battery must be in good condition and fully
charged.
• If you disconnect the battery, do the PCM idle learn
procedure (see page 11-202).
Recommended Procedure:
• Use a starter system tester.
• Connect and operate the equipment in accordance
with the manufacturer’s instructions.
1. Hook up the following equipment:
• Ammeter, 0
400A around both negative battery
cables
• Voltmeter, 0
20 V (accurate within 0.1 volt)
• Tachometer, 0
1,200 rpm
2. Remove the No. 1 (15A) fuse from the under-hood
fuse/relay box.
3. With the shift lever in P or N, turn the ignition
switch to start (III).
The starting system is OK.
Go to step 4.
4. Check the battery condition. Check electrical
connections at the battery, the negative battery
cable to the body, engine ground cables, and the
starter for looseness and corrosion. Then try
starting the engine again.
Repairing the loose connection fixed the
problem. The starting system is now OK.
If the starter will not crank the engine at all, go
to step 5. If it cranks the engine erratically or too
slowly, go to step 7. If it won’t disengage from the
torque converter ring gear when you release the
key, check for the following until you find the cause.
• Solenoid plunger and switch malfunction
• Dirty drive gear or damaged overrunning clutch.
5. Make sure the transmission is in P or N, then
disconnect the BLK/WHT wire (A) from the starter
solenoid (B). Connect a jumper wire from the
battery positive terminal to the solenoid terminal.
Go to step 6.
Remove the starter, repair or replace as
necessary.
(cont’d)
Did the star ter cr ank the engine nor mally?
Did the star ter cr ank the engine nor mally?
Did the star ter cr ank the engine?
03/07/29 09:07:16 61S0X050_040_0005
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YES
NO
YES
NO
4-6
4-6
Starting System
Starter Circuit Troubleshooting
(cont’d)
Starter Solenoid Test
S
M
6. Check the following items in the order listed until
you find the open circuit.
• Check the BLK/WHT wire and connectors
between the driver’s under-dash fuse/relay box
and the ignition switch, and between the driver’s
under-dash fuse/relay box and the starter.
• Check the ignition switch (see page 22-145).
• Check the transmission range switch and
connector.
• Check the BLU/WHT wire between the starter cut
relay and transmission range switch.
• Substitute a known-good starter cut relay.
7. Check the cranking voltage and current draw.
Go to step 8.
Replace the starter, or remove and
disassemble it, and check for the following until
you find the cause.
• Open circuit in starter armature commutator
segments
• Starter armature dragging
• Shorted armature winding
• Excessive drag in engine
8. Check engine speed during cranking.
Go to step 9.
Remove and disassemble the starter, and
check for the following until you find the cause.
• Excessively worn starter brushes
• Open circuit in commutator brushes
• Dirty or damaged helical spline or drive gear
• Faulty drive gear clutch
9. Remove the starter and inspect its drive gear and
the torque converter ring gear for damage. Replace
any damaged parts.
1. Disconnect the starter cable, BLK/WHT wire and
starter motor wire.
2. Check the hold-in coil for continuity between the
S terminal and the armature housing (ground).
There should be continuity.
• If there is continuity, go to step 3.
• If there is no continuity, replace the solenoid.
3. Check the pull-in coil for continuity between the
S terminal and M terminal. There should be
continuity.
• If there is continuity, the solenoid is OK.
• If there is no continuity, replace the solenoid.
Is cr anking voltage gr eater than or equal to 8.5 V
and cur r ent dr aw less than or equal to 380A?
Is engine speed above 100 r pm?
03/07/29 09:07:17 61S0X050_040_0006
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Specifications:
1.6 kW
80A or less (Electric current),
2,600 rpm or more (Motor-speed)
4-7
Starter Performance Test
12 V
BATTERY
M
S
BODY
(GROUND)
12 V
BATTERY
M
S
BODY
(GROUND)
12 V
BATTERY
M
S
BODY
(GROUND)
A
12 V
BATTERY
STARTER
B
S
M
1. Disconnect the wires from the S terminal and the
M terminal.
2. Make the connections as shown using as heavy a
wire as possible (preferably equivalent to the wire
used for the vehicle). To avoid damaging the starter,
never leave the battery connected for more than
10 seconds.
3. Connect the battery as shown. Be sure to
disconnect the starter motor wire from the solenoid.
If the starter pinion pops out, it is working properly.
4. Disconnect the battery from the M terminal. If the
pinion does not retract, the hold-in coil of the
solenoid is working properly.
5. Disconnect the battery also from the starter body. If
the pinion retracts immediately, it is working
properly.
6. Clamp the starter firmly in a vise.
7. Connect the starter to the battery as shown in the
diagram, and confirm that the motor starts and
keeps rotating.
8. If the electric current and motor speed meet the
specifications when the battery voltage is at 11.5 V,
the starter is working properly.
03/07/29 09:07:18 61S0X050_040_0007
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