Keyless Access/TPMS Control Unit
NOTE:
*: Without auto idle stop system
1. Turn the vehicle to the OFF (LOCK) mode.
2. Disconnect the keyless access/TPMS control unit connectors.
NOTE: All connector views are shown from the wire side of the female terminals.
3. Inspect the connectors and socket terminals to be sure they are all making good contact:
4. With the connectors still disconnected, do the following input tests:
Cavity | Wire | Test condition | Test: Desired result | Possible cause if desired result is not obtained |
C4 | LT BLU | Under all conditions | Check for continuity between terminal C4 and data link connector (DLC) terminal No. 7: There should be continuity. | An open or high resistance in the K-LINE wire |
Check for continuity between terminal C4 and body ground: There should be no continuity. | A short to ground in the K-LINE wire | |||
C6 | ORN | Under all conditions | Check for continuity between terminal C6 and data link connector (DLC) terminal No. 15: There should be continuity. | An open or high resistance in the L-LINE wire |
Check for continuity between terminal C6 and body ground: There should be no continuity. | A short to ground in the L-LINE wire | |||
B10 | BLK | Press the engine start/stop switch button | Measure the voltage to ground: There should be battery voltage. |
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B11 | BRN | Press the engine start/stop switch button | Check for continuity to ground: There should be continuity. |
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C5 | LT GRN | Jump the SCS line with the HDS, disconnect PCM connector A (51P) | Check for continuity between terminal under-dash fuse/relay box connector F (18P) terminal No. 17 and PCM connector A (51P) terminal No. 38: There should be continuity. |
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Disconnect the under-dash fuse/relay box connector M (12P) | Check for continuity between terminal C5 and under-dash fuse/relay box connector M (12P) terminal No. 8: There should be continuity. |
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Check for continuity between terminal C5 and body ground: There should be no continuity. | A short to ground in the SNET wire |
5. Reconnect the connectors, and do the following input tests:
Cavity | Wire | Test condition | Test: Desired result | Possible cause if desired result is not obtained |
A1 | RED | Under all conditions | Measure the voltage to ground: There should be battery voltage. |
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B18 | WHT | Under all conditions | Measure the voltage to ground: There should be battery voltage. |
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A17 | BLK | In all power modes | Measure the voltage to ground: There should be less than 0.2 V. |
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B36 | BLK | In all power modes | Measure the voltage to ground: There should be less than 0.2 V. |
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B30 | YEL | Vehicle ON mode | Measure the voltage to ground: There should be battery voltage. |
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B34 | TAN | Vehicle ON mode | Measure the voltage to ground: There should be battery voltage. |
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B29 | RED | Vehicle ON mode | Measure the voltage to ground: There should be battery voltage. |
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B27 | TAN | Vehicle ON mode | Measure the voltage to ground: There should be battery voltage. |
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C14*4 | WHT | Driver's door outer handle lock button pushed | Measure the voltage to ground: There should be less than 0.2 V. |
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Driver's door outer handle lock button released | Measure the voltage to ground: There should be about 5 V. |
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C13*4 | BLU | Front passenger's door outer handle lock button pushed | Measure the voltage to ground: There should be less than 0.2 V. |
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Front passenger's door outer handle lock button released | Measure the voltage to ground: There should be about 5 V. |
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B1 | YEL | Parking brake pedal pressed | Measure the voltage to ground: There should be less than 0.2 V. |
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Parking brake pedal released | Measure the voltage to ground: There should be about 5 V. |
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C16 | YEL | Tailgate outer handle switch pushed | Measure the voltage to ground: There should be less than 0.2 V. |
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Tailgate outer handle switch released | Measure the voltage to ground: There should be about 5 V. |
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C10 | BLU | Shift lever in P position | Measure the voltage to ground: There should be less than 0.2 V. |
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Shift lever in any position other than P | Measure the voltage to ground: There should be about 5 V. |
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C9*1 | GRN | Shift lever in P position | Measure the voltage to ground: There should be about 5 V. |
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Shift lever in any position other than P | Measure the voltage to ground: There should be less than 0.2 V. |
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B3*3 | LT GRN | Electric steering lock (LOCK) | Measure the voltage to ground: There should be about 5 V. |
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Electric steering lock (UNLOCK) | Measure the voltage to ground: There should be less than 0.2 V. |
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*1: 6-speed A/T
*2: 9-speed A/T
*3: With electric steering lock
*4: With keyless access function
*5: With keyless access function and with power tailgate
*6: With keyless access function and without power tailgate
Electric Steering Lock
NOTE:
6. Turn the vehicle to the OFF (LOCK) mode.
7. Disconnect the electric steering lock 12P connector.
8. Inspect the connector and socket terminals to be sure they are all making good contact:
9. Reconnect the connector, and do the following input tests:
Cavity | Wire | Test condition | Test: Desired result | Possible cause if desired result is not obtained |
3 | RED | Under all conditions | Measure the voltage to ground: There should be battery voltage. |
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12 | TAN | Vehicle ON mode | Measure the voltage to ground: There should be battery voltage. |
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10. If multiple failures are found on more than one control unit, replace the keyless access/TPMS control unit. If input failures are related to a particular control unit, replace the control unit.
Keyless Access System Status Log
If you suspect there is an immobilizer system problem, check the status log in the HDS.
1. Connect the HDS to the data link connector (DLC).
2. Turn the vehicle to the ON mode.
3. On the HDS screen, at SYSTEM SELECTION MENU, enter ONE-PUSH START, then select KEYLESS ACCESS CONTROL UNIT or BACKUP CONTROL UNIT.
NOTE: If the HDS does not communicate, check the keyless access/TPMS control unit power, ground, K-line, and L-line connectors.
4. At KEYLESS ACCESS CONTROL UNIT, enter KEYLESS ACCESS SYSTEM INFORMATION, then select KEYLESS ACCESS STATUS LOG.
5. At BACKUP CONTROL UNIT, enter SYSTEM INFORMATION, then select STATUS LOG.
6. Check the STATUS LOG count. Troubleshoot the status with the highest count first. If no counts are listed, the immobilizer system is OK. Continue with normal symptom troubleshooting.
Status Log (Keyless Access/TPMS Control Unit)
Status Log (Backup Control Unit)
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