Honda Accord 2008 Manual page 325

07/11/02 08:59:58 61TA0000_110_0006
Fuel and Emissions Systems
General Troubleshooting Information (cont'd)
How to Troubleshoot Circuits at the ECM/
PCM Connectors
NOTE: The ECM/PCM overwrites data and monitors the
EVAP system for up to about 40 minutes after the
ignition switch is turned OFF. Jumping the SCS line
after turning the ignition switch to LOCK (0) cancels this
function. Disconnecting the ECM/PCM during this
function, without jumping the SCS line first, can
damage the ECM/PCM.
1. Jump the SCS line with the HDS.
2. Remove the bolts (D).
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3. Disconnect ECM/PCM connectors A, B, and C.
4. When diagnosis/troubleshooting is done at the
ECM/PCM connector, use the terminal test port (A)
above the terminal you need to check.
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11-6
D
9.8 N·m
(1.0 kgf·m, 7.2 lbf·ft)
C
B
A
A
5. Connect one side of the patch cords (A) terminals to
a commercially available digital multimeter (B),
and connect the other side of the patch cord
terminals to a commercially available banana jack
(Pomona Electronics Tool No. 3563 or equivalent)
(C).
A
B
6. Gently contact the pin probe (male) at the terminal
test port from the terminal side. Do not force the
tips into the terminals.
• For accurate results, always use the pin
probe (male).
• To prevent damage to the connector
terminals, do not insert test equipment
probes, paper clips, or other substitutes as
they can damage the terminals. Damaged
terminals cause a poor connection and an
incorrect measurement.
• Do not puncture the insulation on a wire.
Punctures can cause poor or intermittent
electrical connections.
C
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