Immobilizer-Keyless Control Unit Input Test
WARNING: This page is about a different variant/trim than selected.
NOTE:
- SRS components are located in this area. Before doing repairs or servicing- Refer to: Precautions for SRS components
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For SRS component locations - Refer to the applicable vehicle/year:
- Before testing, make sure the No. A21 (10 A) fuses in the under-hood fuse/relay box is OK.
- Before testing, make sure the No. B5 (7.5 A) fuse in the under-dash fuse/relay box is OK.
1. Turn the ignition switch to LOCK (0).
2. Disconnect the immobilizer-keyless control unit 7P connector .
3. Inspect the connector and socket terminals to be sure they are all making good contact:
- If the terminals are bent, loose, or corroded, repair them as necessary, and recheck the system.
- If the terminals are OK, go to step 4.
4. With the connector still disconnected, perform the following input tests:
- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, go to step 5.
| Cavity | Wire | Terminal name | Test condition | Test: Desired result | Possible cause if desired result is not obtained |
|---|---|---|---|---|---|
| 2 | GRY | S-NET | Jump the SCS line with the HDS, disconnect PCM connector A (51P) - Refer to: How to Troubleshoot the Fuel and Emissions Systems (L4) or How to Troubleshoot the Fuel and Emissions Systems (V6) . | Measure the voltage to ground: There should be about 5 V. |
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| Check for continuity between the terminal and PCM connector A (51P) terminal No. 21: There should be continuity. |
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| Disconnect the battery negative terminal | Measure the resistance between the terminal and body ground: There should be more than 50 kΩ. |
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5. Reconnect the connector to the immobilizer-keyless control unit, and perform the following input tests:
- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, replace the immobilizer-keyless control unit
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NOTE: After replacing the immobilizer-keyless control unit, perform the immobilizer key registration .
| Cavity | Wire | Terminal name | Test condition | Test: Desired result | Possible cause if desired result is not obtained |
|---|---|---|---|---|---|
| 7 | WHT | +B BACK UP | Under all conditions | Measure the voltage to ground: There should be battery voltage. |
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| 6 | BRN | IG1 METER | Ignition switch ON (II) | Measure the voltage to ground: There should be battery voltage. |
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| 1 | BLK | GND | In all ignition switch positions | Measure the voltage to ground: There should be less than 0.2 V. |
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| 3 | LT BLU | K LINE | Ignition ON (II). | Measure the voltage to ground: There should be pulse voltage (digital signal; 8.5 ~ 12 V). |
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