How To Troubleshootin Eps Dtc; Hds Pocket Tester Application; On Dtc Readout - Honda TRX500FM Service Manual

ELECTRIC POWER STEERING (EPS : FPM/FPE models)
HOW TO TROUBLESHOOT EPS DTC
1, Questton the customer about the conditions when the problem occurred. and try to reproduce the same conditions lor
troubleshooting . Find out when the EPS indicator came on, such as during EPS control , after EP$ control, when the vehicle was
al a certain speed, etc.
2. When the EPS indicator does not come on during the lest-ride, but troubleshooting is done based on the DTC, check for loose
connectors, poor terminal contact, etc., in the affected circuil before you start troubleshooting.
3. After troubleshooting, erase the DlC(s) and test-ride the vehicle to be sure that the EPS indicator does not come on.
HDS POCKET TESTER INFORMATION
• The HDS can readout and erase the DIG (without the torque sensor neutral position).
How to connect the HOS Pocket Tester
Turn the ignition switch OFF,
Remove the seat (page 2-4 ),
Remove the OLC [1) from the dummy conneclor [2),
Connect Ihe HDS pockel tesler 10 the OLC,
Turn Ihe ignilion switch ON and engine slop swilch ·0 ", check the DTC and
stored data.
DTC READOUT
NOTE
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If Ihe HoS pocket tester is not available, oTC can be read from the EPS ECU memory by the EPS indicator blinking pattern
(page 24-10).
After pettorn-ling diagnostJc troubleshooting, erase the OTC(s) (page 24-11) and test-ride the vehicle to be sure Ihal the
problem(s) have been removed ,
Start Ihe engine and check the EPS indicator (1),
NOTE
Under normal conditions, the EPS indicalor stays on with the ignition
switch is turned ON until the engine slans, and it goes off after starting
the engine.
If the EPS indicator stays on or blinks wi th the engine running, connect the
HDS pocket tester to the OLC (page 24-10).
Read the OTC, stored data and follow the troubleshooting index
(page 24-16).
To read the OTC without the HoS pocket tester, refer to the following
procedure.
Read ing DTC wi th the EPS indicator
1 Remove the OLC from the dummy connector (page 24-10),
2. Short the OLe [1) terminals using the special tool.
TOOL:
(2] SCS service co nnecto r 070PZ-ZY30100
Connection : Brown/red - Green
3, Turn the ignition switch ON and engine stop switch "0 ", read , note the
EPS Indicator blinks and refer to the troubleshooting index (page 24-16).
24-10
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