Detroit Diesel Single Ecm Troubleshooting Manual

Section 16.3
Troubleshooting Flash Code 16

1. Detroit Diesel Ecm Repair
2. Detroit Diesel Single Ecm Troubleshooting Manual Diagram
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Diesel Single Ecm Troubleshooting Manualdetroit diesel single ecm troubleshooting manual is universally compatible later than any devices to read. EBookLobby is a free source of eBooks from different categories like, computer, arts, education and business. There are several sub-categories to choose from which allows you to download from the. Jun 13, 2019 If the resistance is less than or equal to 5 Ω, refer to '22.3.10 Check ECM Connectors'. If the resistance is greater than 5 Ω or open, the signal line (#417) or return line (#952) are open, repair the open. Refer to '22.3.15 Verify Repairs'. Section 22.3.10 Check ECM Connectors. Perform the following steps to check the ECM connectors:.

The following procedures will troubleshoot Flash Code 16.

Section 16.3.1
Sensor Check

Perform the following steps to check the sensor.

1. Turn ignition OFF.
2. Disconnect Coolant Level Sensor (CLS) connector and install a jumper between sockets A and B of the CLS harness connector.
3. Attempt to start and run engine at idle.
4. Read DDR for active codes.
   1. If active code 111/3 and any other codes except code 111/4 are logged, refer to '16.3.2 Signal Circuit Check' .
   2. If active code 111/4 and any other codes are logged, refer to '16.3.4 Signal Short to Ignition Check' .
5. Stop engine.

Section 16.3.2
Signal Circuit Check

Detroit Diesel Ecm Repair

Perform the following steps to check the signal circuit.

1. Turn ignition OFF.
2. Disconnect the CLS.
3. Disconnect the vehicle harness connector.
4. Measure resistance between socket H3 (#115) on the vehicle harness connector and A (#115 signal) of the CLS connector.
   1. If the resistance measurement is less than or equal to 5 Ω, refer to '16.3.3 Ground Circuit Check' .
   2. If the resistance measurement is greater than 5 Ω, or the signal line #115 is open, repair the open. Refer to '16.3.7 Verify Repairs' .

Section 16.3.3
Ground Circuit Check

Perform the following steps to check the ground circuit.

1. Measure resistance between cavity B (battery ground) of the CLS connector and battery ground.
   1. If the resistance measurement is less than or equal to 5 Ω, refer to '16.3.4 Signal Short to Ignition Check' .
   2. If the resistance measurement is greater than 5 Ω, or open, the ground circuit is open. Repair and refer to '16.3.7 Verify Repairs' .

Section 16.3.4
Signal Short to Ignition Check

Perform the following steps to check for a signal short to ignition.

1. Disconnect the vehicle harness connector at the ECM.
2. Remove the jumper wire at the CLS harness connector.
3. Turn ignition ON.
4. Measure voltage at cavity A (#115 signal) of the CLS connector and battery ground. See Figure 'Coolant Level Sensor and Circuits' .
   1. If the voltage measurement is less than or equal to 6 volts, refer to '16.3.5 ECM Connectors Check' .
   2. If the voltage measurement is greater than 6 volts, the CLS signal line (#115) is shorted to the 12/24 volt DC line. Repair the short or replace the #115 wire. Refer to '16.3.7 Verify Repairs' .

   Figure 1. Coolant Level Sensor and Circuits

Section 16.3.5
ECM Connectors Check

Perform the following steps to check the ECM connectors.

1. Inspect terminals at the vehicle harness connector (both the sensor and harness side) for bent, corroded and unseated pins or sockets. Check terminal and pin H3 at the ECM and all terminals and pins in the CLS connector. See Figure 'Vehicle Harness Connector' .
   1. If terminals and connectors are not damaged, replace the CLS. Refer to '16.3.7 Verify Repairs' . If this is a repeated failure of the CLS, refer to '16.3.6 Alternator Ground Check' .
   2. If terminals and connectors are damaged, repair both. Refer to '16.3.7 Verify Repairs' .

   Figure 2. Vehicle Harness Connector

Section 16.3.6
Alternator Ground Check

Perform the following steps to check the alternator ground.

1. Connect all connectors.
2. Remove alternator belt or disable alternator from charging.
3. Start and run the engine.
4. Read logged codes.
   1. If no codes are logged, repair the alternator ground circuit. Refer to '16.3.7 Verify Repairs' .
   2. If codes are logged, replace CLS. Refer to '16.3.7 Verify Repairs' .

Section 16.3.7
Verify Repairs

Detroit Diesel Single Ecm Troubleshooting Manual Diagram

All the mods 3 changelog. Perform the following steps to verify the repairs.

1. Turn ignition OFF.
2. Reconnect all connectors.
3. Turn ignition ON.
4. Clear DDR codes.
5. Start and run the engine for one minute.
6. Stop the engine.
7. Check DDR for codes.
   1. If no codes are displayed, troubleshooting is complete.
   2. If code 111/3 is not logged, and other codes are logged, refer to '9.1 First Step for Diagnosing a Fault Within the DDEC System' .
   3. If code 111/3 is logged, and other codes are logged, refer to '16.3.1 Sensor Check' , and perform tasks.

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