• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
• | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
The starter/generator control module (SGCM) monitors the temperature sensor to determine if the sensor is reading correctly, by comparing it to average of 3 other sensors after 480 minute soak.
The engine is running.
The average (PIMTEMP 1, PIMTEMP 2, APMTEMP) - BOARDTEMP is greater than 30°C (86°F).
• | 50 percent maximum torque limit |
• | APM 50 percent maximum current output |
Return to normal range for 10 seconds.
Possible internal failure at temperature sensor
Hybrid Controls Connector End Views
Caution: To help avoid personal injury, additional precautions must be taken prior to working on the generator control module or the generator starter. After removing the 36V battery cables from the generator battery, remove both engine wiring harness connectors from the generator control module. Wait at least 5 minutes and then remove the generator control module cover. Verify voltage levels at all 36V, 12V, and 3-phase connections, are less than 3 volts using a DMM before proceeding.
⇒ | If only the SGCM board temperature sensor reads high, replace the SGCM. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for SGCM replacement, setup, and programming