ZDX V6-3.7L (2010)
Data Link Connector: Testing and Inspection
DLC Circuit Troubleshooting
NOTE: If you suspect the HDS or the HDS DLC cable may be the source of the communication problem, verify that they are working properly by
connecting them to a known-good, like vehicle and system, and checking for communication problems.
1. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
2. Connect the HDS to the DLC See: Testing and Inspection/Initial Inspection and Diagnostic Overview.
3. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, and read the HDS.
Does the HDS identify the vehicle?
YES -
Go to step 5.
NO -
Go to step 4.
4. Try to start the engine.
Does the engine start and idle smoothly?
YES -
Go to step 30.
NO -
Go to the PCM power and ground circuit troubleshooting See: Testing and Inspection/Component Tests and General Diagnostics/PCM Power and
Ground Circuit Troubleshooting.
5. Check for Pending or Confirmed DTCs in the PGM-FI system with the HDS.
Are any Pending or Confirmed DTCs indicated?
YES -
Go to the indicated DTC's troubleshooting.
NO -
-
If the HDS does not communicate with the SRS, go to step 6.
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If the HDS does not communicate with the VSA system, go to step 8.
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If the HDS does not communicate with the SH-AWD system, go to step 10.
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If the HDS does not communicate with the TPMS, go to step 12.
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If the HDS does not communicate with the IMMOBI (immobilizer) system, go to step 14.
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If the HDS does not communicate with the DRIVING SUPPORT system, go to step 16.
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If the HDS does not communicate with the ACTIVE DAMPER system, go to step 18.
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If the HDS does not communicate with the ONE PUSH START system, go to step 20.
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If the HDS does not communicate with the BODY ELECTRICAL system, go to step 22.
6. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
7. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, and watch the SRS indicator.
Does the SRS indicator come on and go off?
YES -
Go to step 24.
