Engine Cranks Slowly |
Diagnostic Instructions |
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Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
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Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
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Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Reference Information |
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Circuit Testing
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Connector Repairs
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Testing for Intermittent Conditions and Poor Connections
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Wiring Repairs
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Circuit/System Verification |
1. |
Ignition OFF, measure and record the battery voltage at the C1 terminals. The voltage should be between 12.0-15.0 V. |
2. |
If not within the specified range, refer to Battery Inspection/Test. |
3. |
Remove the drive belts. Refer to one of the following: |
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Drive Belt Replacement for the 2.0L engine |
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Drive Belt Tensioner Replacement for the 2.0L engine |
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Drive Belt Replacement for the 2.0L (Diesel) engine |
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Drive Belt Tensioner Replacement for the 2.0L (Diesel) engine |
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Drive Belt Tensioner Replacement for the 2.8L, 3.0L, 3.2L, or 3.6L engine |
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Drive Belt Replacement for the 2.8L, 3.0L, 3.2L, or 3.6L engine |
4. |
Ignition ON, attempt to start the engine. Make sure the crankshaft is rotating normally. |
5. |
If the engine cranks normal, inspect the engine and belt drive system for mechanical binding, seized engine, or seized generator. |
6. |
Verify that a test lamp illuminates between the M64 starter motor B+ terminal A X2 and ground. |
7. |
If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. |
8. |
Test for less than 0.5 V between the positive battery cable and terminal A X2 at the M64 starter motor as ignition is switched to start position. |
9. |
If greater than the specified value, replace the positive battery cable. |
10. |
Test for less than 0.5 V between the negative battery cable and the M64 Starter Motor case as ignition is switched to start position. |
11. |
If greater than the specified value, replace the negative battery cable. |
12. |
If all circuits test normal, replace the M64 Starter Motor. |
Repair Instructions |
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Battery Positive Cable Replacement
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Battery Negative Cable Replacement (Gasoline)
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Starter Replacement (2.0L Diesel) Starter Replacement (LAU/A28NER) Starter Replacement (LDE/A16XER, LLU/A16LET, 2H0/A18XER) Starter Replacement (LHU/A20NFT)
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