Alarm Codes - Honda iST Owner's Manual

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Alarm Codes

Code Category 1 — Actuator Communication Alarm
Control Head lost communication with the ECU on engine
indicated in Code Detail
Possible
Engine control unit failure, communi-
faults
cation cable failure, control head failure
Code Detail 1
Port Engine
Code Detail 2
Stbd Engine
Code Detail 3
Port (Inboard) engine
Code Detail 4
Stbd (Inboard) engine
Code Category 2 / 3 / 4 / 5 / 6 — Control Head handle
sensor fault
Possible
Internal failure in control head –
faults
control head replacement required
Code Detail 1
Port Engine control handle
Code Detail 2
Stbd Engine control handle
Code Detail 3
Port Engine control handle
Code Detail 4
Stbd Engine control handle
Code Category 9 – Low Battery Warning
Battery voltage too low – alternator
Possible faults
failure, battery connections are poor
Code Detail 1
Port Engine
Code Detail 2
Stbd Engine
Code Detail 3
Port (Inboard) engine
Code Detail 4
Stbd (Inboard) engine
Code Category 11 – Throttle actuator position alarm
Throttle actuator is not responding correctly to ECU
command
Throttle Actuator failure, throttle
Possible faults
cable adjustment error
Code Detail 1
Port Engine
Code Detail 2
Stbd Engine
Code Detail 3
Port (Inboard) engine
Code Detail 4
Stbd (Inboard) engine
Code Category 12 – Gear actuator position alarm
Gear actuator is not responding correctly to ECU
command
Gear Actuator failure, "dry shifting"
Possible faults
(shifting without engine running)
Code Detail 1
Port Engine
Code Detail 2
Stbd Engine
Code Detail 3
Port (Inboard) engine
Code Detail 4
Stbd (Inboard) engine
Code Category 13 – Throttle actuator feedback alarm.
Throttle actuator feedback sensor is out of range
Throttle actuator feedback sensor
Possible
failure, ECU failure, wire harness
faults
between ECU and throttle actuator error
Code Detail 1
Port Engine
Code Detail 2
Stbd Engine
Code Detail 3
Port (Inboard) engine
Code Detail 4
Stbd (Inboard) engine
Code Category 14 — Gear actuator feedback alarm
Gear actuator feedback sensor is out of range
Gear actuator feedback sensor failure,
Possible
ECU failure, wire harness between ECU
faults
and throttle actuator error
Code Detail 1
Port Engine
Code Detail 2
Stbd Engine
Code Detail 3
Port (Inboard) engine
Code Detail 4
Stbd (Inboard) engine
Code Category 15 — Loss of tach signal
ECU failure, tach connector failure,
Possible faults
sensor failure on engine
Code Detail 1
Port Engine
Code Detail 2
Stbd Engine
Code Detail 3
Port (Inboard) engine
Code Detail 4
Stbd (Inboard) engine
16

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