Diagnostic procedure
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STEP
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INSPECTION
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ACTION
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|---|---|---|---|
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1
|
VERIFY RELATED SERVICE INFORMATION AVAILABILITY
• Check for related Service Information availability.
• Is any related Service Information available?
|
Yes
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Perform repair or diagnosis according to available Service Information.
• If vehicle is not repaired, go to the next step.
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No
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Go to the next step.
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2
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INSPECT BATTERY
• Turn the ignition switch off.
• Inspect battery.
(See BATTERY INSPECTION.)
• Is battery normal?
|
Yes
|
Replace battery, then go to Step 6.
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No
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Go to the next step.
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3
|
INSPECT GENERATOR TERMINAL FOR POOR INSTALLATION
• Turn the ignition switch off.
• Inspect for looseness of generator terminal B installation nut.
• Is nut loose?
|
Yes
|
Tighten generator terminal B installation nut, then go to Step 6.
|
|
No
|
Go to the next step.
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|
4
|
INSPECT BATTERY POSITIVE TERMINAL FOR POOR INSTALLATION
• Inspect for looseness of battery positive terminal.
• Is terminal loose?
|
Yes
|
Connect battery positive terminal correctly, then go to Step 6.
|
|
No
|
Go to the next step.
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|
5
|
INSPECT BATTERY CHARGING CIRCUIT
• Start the engine.
• Disconnect battery positive terminal.
• Is the engine stalled?
|
Yes
|
Repair or replace harness between generator terminal B and battery positive terminal, then go to the next step.
|
|
No
|
Go to the next step.
|
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6
|
VERIFY TROUBLESHOOTING OF DTC P1634 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PCM memory using the WDS or equivalent.
• Turn the ignition switch off, then start engine.
• Is the same DTC present?
|
Yes
|
Replace the PCM, then go to the next step.
|
|
No
|
Go to the next step.
|
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7
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VERIFY AFTER REPAIR PROCEDURE
• Perform "After Repair Procedure".
(See AFTER REPAIR PROCEDURE [AJ].)
• Is there any DTC present?
|
Yes
|
Go to the applicable DTC inspection.
|
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No
|
Troubleshooting completed.
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