Special Tools
SA9154Z-A Starting and Charging System Tester
Diagnostic Aids
Note:
• A dead battery is usually a symptom of another problem. Fix the problem, do not just charge or change the battery. • Failure to properly understand the battery and its function could lead to a misdiagnosis and unneeded repairs. Refer to
Battery Description and Operation and
Battery Common Causes of Malfunction for more information.
If testing the vehicle with the battery cables still connected, wiggle the SA9154Z-A clips on the terminal. This may cut through any coating or through any oxidation that may be present on the terminal.
Even new terminals contain a protective coating that may insulate or cause a resistance in the test circuit.
Circuit/System Testing
Warning: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.
- Inspect the battery for a cracked, broken, or damaged case, which may be indicated by battery acid leakage.
- Verify the cold cranking amperage (CCA), and reserve capacity (RC) and/or amp hour (AH) rating of the battery to the original battery or original equipment (OE) specification. Refer to Battery Usage.
- Verify that the battery cables are clean and tight. The battery terminal bolts should be torqued as specified in Fastener Tightening Specifications.
- Install the SA9154Z-A and follow directions supplied by the tester.
| ⇒ | If there is any apparent damage, replace the battery. |
| ⇒ | If the battery does not meet or exceed specifications, replace the battery. |
| ⇒ | If the battery cable(s) need to be cleaned, clean as required and tighten as specified. |
| ⇒ | If the battery cable(s) are damaged, replace then tighten as specified. |
| ⇒ | If the tester calls for charging the battery, refer to Battery Charging |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
