How to Solve ISUZU IDSS Scan Tool Does Not Power Up Error

This instruction show you guide on how to solve ISUZU IDSS Scan Tool does not power up error.

Note:

Verify that the scan tool operates properly on another vehicle.

 

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Steps:

1 IDSS interface power-up check

1) Check the LED power lamp of the IDSS interface. Does the LED power lamp illuminate?

 

Yes

=>Go to USB cable connection check.

 

No

=>Go to Smart cable and USB cable inspection.

 

2 USB cable connection check

1) Inspect for poor connections at the USB cable of the computer and IDSS interface.

2) Repair the connections as necessary.

Procedure completion

=>Go to Repair verification.

 

3 Smart cable and USB cable inspection

1) Inspect for poor connections at the smart cable of the DLC and IDSS interface. Is the connection status normal?

2) Inspect for poor connections at the USB cable of the computer and IDSS interface. Is the connection status normal?

3) Are all of the results normal?

Yes

 

=>Go to Fuse inspection.

No

Repair the connections as necessary.

=>Go to Repair verification.

 

4 Fuse inspection

1) Turn OFF the ignition switch.

2) Inspect the METER(+B) 10A fuse for a blowout. Is the result normal?

Yes

=>Go to DLC inspection.

 

No

Replace the fuse. If the fuse blows out again, repair the short to ground in the circuits relating to the METER(+B) 10A fuse.

=>Go to Repair verification.

 

5 DLC inspection

1) Inspect for poor connections at the DLC (C19). Is the connection status normal?

Refer to “RHD DLC” in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to “LHD DLC” in the ETM (wiring diagram). (Open using the ETM viewer.).

 

Yes

=>Go to Inspection for open circuit in DLC battery power supply circuit.

 

No

Repair the connections as necessary.

=>Go to Repair verification.

 

6 Inspection for open circuit in DLC battery power supply circuit

1) Connect a test lamp between the DLC battery power supply circuit (pin 16 of C19) and the body ground. Does the test lamp illuminate?

Refer to “RHD DLC” in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to “LHD DLC” in the ETM (wiring diagram). (Open using the ETM viewer.).

 

Yes

=>Go to Inspection for open circuit in DLC ground circuit.

 

No

Repair the open circuit in the DLC battery power supply circuit.

=>Go to Repair verification.

 

7 Inspection for open circuit in DLC ground circuit

1) Inspect each DLC ground circuit (pins 4 and 5 of C19) for an open circuit or high resistance. Is the result normal?

Refer to “RHD DLC” in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to “LHD DLC” in the ETM (wiring diagram). (Open using the ETM viewer.).

 

Yes

Go to Intermittent conditions of engine.

Refer to “202.Engine 15D.Symptom(4JJ3 with DPD) intermittent conditions of engine”.

 

No

Repair the circuit and clean or tighten the ground terminal as necessary.

=>Go to Repair verification.

 

8 Repair verification

1) Connect the scan tool to the DLC.

2) Power up the scan tool. Does the scan tool power up?

 

Yes

The system is normal.

 

No

=>Go to IDSS interface power-up check.

For more guide about ISUZU,please refer to:ISUZU Trouble Repair.