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Isuzu US-IDSS 2024 Diagnostic is a comprehensive tool for the effective maintenance and repair of Isuzu vehicles. It integrates advanced diagnostic features to assist technicians in identifying and resolving issues promptly. This system supports a wide range of Isuzu models, ensuring compatibility with both US and Canadian specifications. Its capabilities include vehicle recognition, fault code analysis, and real-time data access to streamline the diagnostic process.
Isuzu US-IDSS 2024 Diagnostic
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CAT 3406E (Prefix 1MM or 2WS) Fault Code: 00 PID: SPN: 171 FMI: 3 Ambient Air Temperature voltage high

The ECM detects the following conditions:

•The signal voltage from the ambient air temperature sensor is greater than 4.92 VDC for more than eight seconds.
•The “Allow Idle Shutdown Override” parameter is programmed to “Outside Temperature Based” or “J1587 Outside Temperature Based”.
•The ECM has been powered for at least two seconds.

Probable Causes:

1) ECM Connection/Harness
2) If code 232-3 or 232-4 (5 Volt Supply voltage codes) are active, troubleshoot those instead
3) Temperature sensor failure
4) Temperature sensor harness
5) ECM Failure

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