Reminder Systems (MICU and Gauge Control Module) Input Test (2016 2017 2018 2019 2020)
NOTE:
- Before testing, troubleshoot the multiplex integrated control unit first, using B-CAN System Diagnosis Test Mode A .
- Before testing, do the gauge control module self-diagnostic function to make sure the beeper and the indicators in the gauge control module work properly and the F-CAN line are OK.
- Before testing, make sure the No. C16 (10 A) fuse in the under-hood fuse/relay box is OK.
- Before testing, make sure the No. D11 (10 A) fuse in the driver's under-dash fuse/relay box is OK.
MICU
1. Turn the vehicle to the OFF (LOCK) mode.
2. Disconnect driver's under-dash fuse/relay box connectors E, G, H, N, P, and Q
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:
- 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. Reconnect the connectors to the driver's under-dash fuse/relay box, and do 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 | Test condition | Test: Desired result | Possible cause if desired results not obtained |
|---|---|---|---|---|
| G3 | BRN | In all power modes | Measure the voltage to ground: There should be less than 0.2 V. |
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| H1 | BRN | In all power modes | Measure the voltage to ground: There should be less than 0.2 V. |
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| P2 | BLK | In all power modes | Measure the voltage to ground: There should be less than 0.2 V. |
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| N4 | PUR | Driver's door open | Measure the voltage to ground: There should be less than 0.2 V. |
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| Driver's door closed | Measure the voltage to ground: There should be about 5 V. |
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| N2 | RED | Front passenger's door open | Measure the voltage to ground: There should be less than 0.2 V. |
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| Front passenger's door closed | Measure the voltage to ground: There should be about 5 V. |
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| E26 | LT GRN | Left rear door open | Measure the voltage to ground: There should be less than 0.2 V. |
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| Left rear door closed | Measure the voltage to ground: There should be about 5 V. |
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| E43 | BRN | Right rear door open | Measure the voltage to ground: There should be less than 0.2 V. |
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| Right rear door closed | Measure the voltage to ground: There should be about 5 V. |
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| E23 | WHT | Trunk lid open | Measure the voltage to ground: There should be less than 0.2 V. |
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| Trunk lid closed | Measure the voltage to ground: There should be about 5 V. |
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*1: USA and Canada models
*2: Mexico models
| Cavity | Wire | Test condition | Test: Desired result | Possible cause if desired results not obtained |
|---|---|---|---|---|
| Q4 *1 | PUR | Disconnect keyless access/TPMS control unit connector A (32P) | Check for continuity between terminal Q4 and keyless access/TPMS control unit connector A (32P) terminal No. 2: There should be continuity. | An open or high resistance in the wire |
| Q4 *2 | PUR | Disconnect keyless access control unit connector C (24P) | Check for continuity between terminal Q4 and keyless access control unit connector C (24P) terminal No. 6: There should be continuity. | An open or high resistance in the wire |
| P17.P13 | RED.BLK | Combination light switch OFF | Measure the voltage between terminals P17 and P13: There should be less than 0.2 V. |
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| Combination light switch in any position other than OFF | Measure the voltage between terminals P17 and P13: There should be about 5 V. |
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| P19.P13 | PNK.BLK | Combination light switch (PARKING position) ON | Measure the voltage between terminals P19 and P13: There should be less than 0.2 V. |
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| Combination light switch OFF | Measure the voltage between terminals P19 and P13: There should be about 5 V. |
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| P15.P13 | GRN.BLK | Combination light switch (headlight) ON | Measure the voltage between terminals P15 and P13: There should be less than 0.2 V. |
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| Combination light switch OFF | Measure the voltage between terminals P15 and P13: There should be about 5 V. |
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*1: USA and Canada models
*2: Mexico models
Gauge Control Module
5. Turn the vehicle to the OFF (LOCK) mode.
6. Disconnect gauge control module connector A (32P)
.
7. 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 8.
8. With the connector still disconnected, do the following input tests:
- If any test indicates a problem, find and correct the cause, then recheck the system.
- If the input test prove OK, go to step 9.
| Cavity | Wire | Test condition | Test: Desired result | Possible cause if desired result is not obtained |
|---|---|---|---|---|
| A12 | RED | Disconnect the electric parking brake control unit 30P connector. | Check for continuity between terminal No. A12 and electric parking brake control unit 30P connector terminal No. 17: There should be continuity. | An open or high resistance in the wire |
9. Reconnect the connector, and do 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 10.
| Cavity | Wire | Test condition | Test: Desired result | Possible cause if desired results not obtained |
|---|---|---|---|---|
| A1 | PNK | Under all conditions | Measure the voltage to ground: There should be battery voltage. |
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| A2 | TAN | Vehicle ON mode | Measure the voltage to ground: There should be battery voltage. |
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| A16 | BLK | In all power modes | Measure the voltage to ground: There should be less than 0.2 V. |
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10. If multiple failures are found on more than one control unit, replace the driver's under-dash fuse/relay box (includes the MICU). If input failures are related to a particular control unit, replace the gauge control module .