ONL773LW4 5/21
23
Troubleshooting
Lamp Code Reason For Error
Error Dectection
After Error Detection
13
Oil pressure SW failure or wire disconnected Engine ECU Power ON (EG Start Enable) Go to Low Power Mode
22
Pressure Sensor failure or wire disconnected Engine ECU Power ON (EG Start Enable) Go to Low Power Mode
Engine running
Go to Low Power Mode
33
Pressure Sensor failure or wire disconnected Engine ECU Power ON (EG Start Enable) Go to Low Power Mode
Engine running
Go to Low Power Mode
15
Speed Sensor Failure or wire disconnected
Cranking
Engine doesn’t start
Engine Running
Go to Low Power Mode
04
Actuator drive wire disconnected
Engine ECU Power ON
Lamp action only
Cranking
Engine doesn’t start
Lamp Flashing Pattern when Error has Occurred
Lamp Code Analysis
Before starting the engine:
1. Check all connections before powering the Engine ECU on.
2. When the Engine ECU is powered on (assuming no failures), the lamp will flash one time and then off.
3. If an Engine ECU failure is detected, the lamp will flash one of the codes below.
4. To resolve an Engine ECU failure, turn power off, check and connect wiring connections and power on again.
Lamp Code specifies the pattern of long and short flashes the ECU uses to indicate a particular problem.
The lamp will continue flashing as shown below until the error is resolved.
Case 1. Error Only:
Code: 13: Long, Short, Short, Short
Long
Long
Short
Short
Short
Short
Short
Short
} }
}
1 Cycle
1 Cycle (repeated)
1 Cycle
Short Short Short
Short
Figure 16:
Lamp Codes
Long
Short
Short Short
Case 2. Error combination (when 2 errors occur at the same time):
Code 13: 13 means Long, Short, Short, Short
Code 04: 04 means Short, Short, Short, Short
Updated 11-26-13
