J 42000 Battery Tester
Caution: Refer to Battery Disconnect Caution in the Preface section.
Important: The battery test using the J 42000 requires correct connections to the battery terminals. A failure to obtain the correct connections during the test may result in a failed test on a good battery.
Follow these instructions in order to avoid an incorrect diagnosis because of connections:
• | If testing the vehicle with the battery cables still connected, wiggle the J 42000 clips on the terminal bolt. This may cut through any coating or through any oxidation that may be present on the bolt. |
Even new bolts contain a protective coating that may insulate or cause a resistance in the test circuit. |
• | If correct connections to the battery terminal bolts in the vehicle are in doubt, perform the following steps: |
1. | Disconnect the negative battery cable. |
2. | Disconnect the positive battery cable. |
3. | Install the test adapters on the terminals. |
4. | Follow the instructions for an Out-of-Vehicle test. |
• | If the tester displays a REPLACE BATTERY or BAD CELL-REPLACE result for a battery tested in the vehicle with the battery cables connected, perform the following steps: |
1. | Disconnect the negative battery cable. |
2. | Disconnect the positive battery cable. |
3. | Install the tester adapters. |
4. | Follow the instructions for an Out-of-Vehicle testy. |
5. | Replace the battery only if the an Out-of-Vehicle test shows a REPLACE BATTERY or BAD CELL-REPLACE result. This prevents battery replacements that are due only to faulty battery cable connections. |
• | Use the correct terminal adapters. |
Do not use any common bolts or a combination of bolts, of nuts, and or washers as adapters when testing the battery. |
Use the test adapters that are provided with the J 42000 or P/N 12303040 terminal adapters. If the adapters that are provided with the J 42000 require replacement, use P/N 12303040. Any other adapter may not contact the correct areas of the battery terminal, causing a resistance that may result in an invalid battery test result. |
Step | Action | Values | Yes | No | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Caution: Refer to Battery Disconnect Caution in the Preface section. Important: Always write the test code displayed by the tester on the repair order for any warranty purposes. The number is a unique code that describes the test data for a particular battery at a particular time. The test code may occasionally repeat when you retest the same battery. More often, each test will result in a different code. If the battery is replaced due to failing the test, only an Out-of-Vehicle test code is valid for warranty purposes. | ||||||||||
1 | Inspect the battery for a cracked, broken, or damaged case, which may be indicated by battery acid leakage. Is the battery OK? | -- | Go to Step 2 | Go to Step 15 | ||||||
2 | Compare the cold cranking amperage (CCA) and reserve capacity (RC) of the battery to the original battery or original equipment (OE) specification. Refer to Battery Usage . Does the battery meet or exceed the specifications? | -- | Go to Step 3 | Go to Step 15 | ||||||
3 |
Does the negative connector rotate? | -- | Go to Step 4 | Go to Step 5 | ||||||
4 | Use a torque wrench in order to verify the torque to loosen the negative battery terminal bolt. Is the torque above the specified value? | 10 N·m (88 lb in) | Go to Step 9 | Go to Step 8 | ||||||
5 | Attempt to rotate the positive battery cable connector clockwise with light finger pressure. Does the positive connector rotate? | -- | Go to Step 7 | Go to Step 6 | ||||||
6 |
Important: Ensure that all of the electrical loads are turned OFF.
Did the tester pass the battery? | -- | Go to Step 14 | Go to Step 8 | ||||||
7 | Use a torque wrench in order to verify the torque to loosen the positive battery terminal bolt. Is the torque above the specified value? | 10 N·m (88 lb in) | Go to Step 10 | Go to Step 8 | ||||||
8 |
Did you complete the repair? | -- | Go to Step 11 | -- | ||||||
9 |
Did you complete the repair? | Go to Step 10 | -- | |||||||
10 |
Did you complete the repair? | -- | Go to Step 11 | -- | ||||||
11 |
Important: Ensure that both battery cables are disconnected and proper adapters are installed in the battery terminals.
Did the tester pass the battery? | -- | Go to Step 12 | Go to Step 15 | ||||||
12 |
Did you complete this action? | Go to Step 13 | -- | |||||||
13 |
Notice: Refer to Fastener Notice in the Preface section. Are the cable bolts properly tightened? | 15 N·m (11 lb ft) | Battery OK | -- | ||||||
14 |
Did you complete the replacement? | Battery OK | -- | |||||||
15 | Replace the battery. Refer to Battery Replacement . Did you complete the replacement? | -- | Battery OK | -- |