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The ISUZU G-IDSS Domestic Japan 2024 is an advanced diagnostic tool designed for Isuzu vehicles. This version introduces several key features that enhance vehicle maintenance and streamline diagnostics. With improved user interfaces and multi-language support, technicians can efficiently navigate the system. The G IDSS also offers advanced programming capabilities, allowing for precise control updates and accurate diagnostics.
ISUZU G-IDSS Domestic Japan 2024 Diagnostic Software
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Cummins ISB CM550 (1990-94) Fault Code: 516 PID: 91 SPN: 91 FMI: 3 Coolant Level Sensor Circuit

Circuit Description
The coolant level sensor monitors the coolant level within the coolant system and passes
information to the electronic control module (ECM) through the engine harness.

Component Location
The coolant level sensor is located in the radiator top tank or surge tank.

Shop Talk
This is an original equipment manufacturer (OEM)-supplied component and will vary in sensor
location.
1) If a shorting plug is used in the coolant level circuit, verify that it is wired correctly.
2) Inspect the wiring harness between the Weather-Pack four-way connector and the coolant level sensor for damage.
3) Make sure the coolant level sensor is located in the middle of the tank rather than off to
one side where the coolant level can change when the vehicle makes a turn.

Sterling trucks utilize ECM pin A22 for coolant level sensing through a 2-pin sensor.

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