Note. Check the PCM for DTCs and troubleshoot PCM (see GENERAL TROUBLESHOOTING INFORMATION ) or F-CAN loss of communication errors first.
- Check for communication circuit problems using the B-CAN System Diagnostic Test Mode 1 (see «HDS INPUTS AND COMMANDS»(ref-513195-S42634370242012110700000) ).
- Check for DTCs.
- If there are DTCs stored, sort them, and then troubleshoot the DTCs in this order. Battery voltage DTCs Internal error DTCs Loss of communication DTCs NOTE: If DTC B1000 is stored, troubleshoot DTC B1000 first (see «DTC B1000: COMMUNICATION CIRCUIT ERROR (BUS OFF)»(ref-513195-S36525498162012110700000) ). Signal error DTCs
- If no DTCs are retrieved, use the B-CAN System Diagnostic Test Mode 2 to check all inputs related to the failure (see «TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE 1 AND TEST MODE 2 (WITHOUT THE HDS)»(ref-513195-S21301063682012110700000) ).
Loss of Communication DTC cross-reference chart
When an ECU on the CAN circuit is unable to communicate with the other ECUs on the B-CAN and F-CAN circuits, the other control units will set loss of communication DTCs. Use this chart to find the control unit that is not communicating with the other control units on the CAN circuit.
- Find the Transmitting Control Unit that is in the same row as all of the loss of communication DTCs retrieved.
- Do the input test for the transmitting control unit. BUS OFF AND INTERNAL ERROR CODES DTC type Related Unit MICU Gauge Control Module Climate Control Unit Immobilizer-Keyless Control Unit HandsFreeLink Control Unit BUS OFF B1000 B1150 B1200 B1900 U1280 ECU (EEPROM) Error B1002 B1152 Transmitting Control Unit Message Receiving Unit/Loss of Communication DTC MICU Gauge Control Module Climate Control Unit Immobilizer-Keyless Control Unit HandsFreeLink Control Unit MICU RM HLSW B1155 WIPSW B1156 B2969 MICU B1157 DOORSW B1159 DRLOCKSW B1160 B1905 Gauge Control Module VSP/NE B1011 B1205 A/T B1906 ENGTEMP B1206 ILLUMI B1207 PCM ENG B1168 A/T B1169 VSA Modulator-Control Unit VSA/ABS B1170 EPS Control Unit EPS B1183 Motor Control Module (MCM) BATT B1185 SRS unit SRS B1187 TPMS control unit TPMS B1173
DTC Troubleshooting Index
Note. Record all DTCs, and southern by DTC type using the following DTC troubleshooting indexes, then troubleshoot the DTC(s) in this order
- Battery voltage DTCs
- Internal error DTCs
- Loss of communication DTCs (beginning with the lowest number first; for example, if B1011 and B1155 are retrieved, troubleshoot B1011 first).
- Signal error DTCs
| DTC | Description | DTC type |
|---|---|---|
| B1000 | Communication circuit error (BUS Off) | Loss of communication |
| B1002 | MICU internal error (EEPROM error) | Internal error |
| B1011 | MICU lost communication with gauge control module (VSP/NE message) | Loss of communication |
| B1028 (see DTC B1028: REAR WIPER MOTOR (PARK) SIGNAL ERROR ) | Rear wiper motor (Park) signal error | Signal error |
| B1036 | IG1 power supply circuit malfunction | Signal error |
| B1077 (see DTC B1077: WINDSHIELD WIPER MOTOR (PARK) SIGNAL ERROR ) | Windshield wiper motor (Park) signal error | Signal error |
| B1078 (see DTC B1078: DAYTIME RUNNING LIGHT FOR CANADA CIRCUIT MALFUNCTION; DTC B1079: DAYTIME RUNNING LIGHT FOR USA CIRCUIT MALFUNCTION ) | Daytime running light for canada circuit malfunction | Bulb failure |
| B1079 (see DTC B1078: DAYTIME RUNNING LIGHT FOR CANADA CIRCUIT MALFUNCTION; DTC B1079: DAYTIME RUNNING LIGHT FOR USA CIRCUIT MALFUNCTION ) | Daytime running light for USA circuit malfunction | Bulb failure |
| B1127 (see DOORS AUTOMATICALLY RELOCK 30 SECONDS AFTER BEING UNLOCKED WITH THE TRANSMITTER EVEN THOUGH A DOOR HAS BEEN OPENED ) | Driver's door key cylinder switch input circuit malfunction (Simultaneous input of lock and unlock signal) | Signal error |
| B1128 (see DTC B1128: DRIVER'S DOOR REMOTE SWITCH INPUT CIRCUIT MALFUNCTION (SIMULTANEOUS INPUT OF LOCK AND UNLOCK SIGNAL) ) | Driver's door remote switch input circuit malfunction (Simultaneous input of lock and unlock signal) | Signal error |
| B1129 (see DTC B1129: DRIVER'S DOOR LOCK KNOB SWITCH INPUT CIRCUIT MALFUNCTION (SIMULTANEOUS INPUT OF LOCK AND UNLOCK SIGNAL) ) | Driver's door lock knob switch input circuit malfunction-(Simultaneous input of lock and unlock signal) | Signal error |
| B1275 (see DTC B1275: HEADLIGHT OFF POSITION CIRCUIT MALFUNCTION; DTC B1276: HEADLIGHT SWITCH PARKING POSITION CIRCUIT MALFUNCTION; DTC B1277: HEADLIGHT AUTO POSITION CIRCUIT MALFUNCTION; DTC B1278: HEADLIGHT ON POSITION CIRCUIT MALFUNCTION ) | Headlight OFF position circuit malfunction | Signal error |
| B1276 (see DTC B1275: HEADLIGHT OFF POSITION CIRCUIT MALFUNCTION; DTC B1276: HEADLIGHT SWITCH PARKING POSITION CIRCUIT MALFUNCTION; DTC B1277: HEADLIGHT AUTO POSITION CIRCUIT MALFUNCTION; DTC B1278: HEADLIGHT ON POSITION CIRCUIT MALFUNCTION ) | Headlight switch PARKING position circuit malfunction | Signal error |
| B1277 (see DTC B1275: HEADLIGHT OFF POSITION CIRCUIT MALFUNCTION; DTC B1276: HEADLIGHT SWITCH PARKING POSITION CIRCUIT MALFUNCTION; DTC B1277: HEADLIGHT AUTO POSITION CIRCUIT MALFUNCTION; DTC B1278: HEADLIGHT ON POSITION CIRCUIT MALFUNCTION ) | Headlight AUTO position circuit malfunction | Signal error |
| B1278 (see DTC B1275: HEADLIGHT OFF POSITION CIRCUIT MALFUNCTION; DTC B1276: HEADLIGHT SWITCH PARKING POSITION CIRCUIT MALFUNCTION; DTC B1277: HEADLIGHT AUTO POSITION CIRCUIT MALFUNCTION; DTC B1278: HEADLIGHT ON POSITION CIRCUIT MALFUNCTION ) | Headlight ON position circuit malfunction | Signal error |
| B1279 (see DTC B1279: DIMMER SWITCH CIRCUIT MALFUNCTION ) | Dimmer switch circuit malfunction | Signal error |
| B1280 (see DTC B1280: TURN SIGNAL SWITCH CIRCUIT MALFUNCTION ) | Turn signal switch circuit malfunction | Signal error |
| B1281 (see DTC B1281: FRONT WIPER MIST POSITION CIRCUIT MALFUNCTION; DTC B1282: FRONT WIPER INT (AUTO) POSITION CIRCUIT MALFUNCTION; DTC B1283: FRONT WIPER LOW POSITION CIRCUIT MALFUNCTION; DTC B1284: FRONT WIPER HIGH POSITION CIRCUIT MALFUNCTION ) | Front wiper MIST position circuit malfunction | Signal error |
| B1282 (see DTC B1281: FRONT WIPER MIST POSITION CIRCUIT MALFUNCTION; DTC B1282: FRONT WIPER INT (AUTO) POSITION CIRCUIT MALFUNCTION; DTC B1283: FRONT WIPER LOW POSITION CIRCUIT MALFUNCTION; DTC B1284: FRONT WIPER HIGH POSITION CIRCUIT MALFUNCTION ) | Front wiper INT (AUTO) position circuit malfunction | Signal error |
| B1283 (see DTC B1281: FRONT WIPER MIST POSITION CIRCUIT MALFUNCTION; DTC B1282: FRONT WIPER INT (AUTO) POSITION CIRCUIT MALFUNCTION; DTC B1283: FRONT WIPER LOW POSITION CIRCUIT MALFUNCTION; DTC B1284: FRONT WIPER HIGH POSITION CIRCUIT MALFUNCTION ) | Front wiper LOW position circuit malfunction | Signal error |
| B1284 (see DTC B1281: FRONT WIPER MIST POSITION CIRCUIT MALFUNCTION; DTC B1282: FRONT WIPER INT (AUTO) POSITION CIRCUIT MALFUNCTION; DTC B1283: FRONT WIPER LOW POSITION CIRCUIT MALFUNCTION; DTC B1284: FRONT WIPER HIGH POSITION CIRCUIT MALFUNCTION ) | Front wiper HIGH position circuit malfunction | Signal error |
| B1575 (see DTC B1575: AUTO LIGHT SENSOR CIRCUIT MALFUNCTION ) | Auto light sensor circuit malfunction | Signal error |
| B1150 | Communication circuit error (BUS Off) | Loss of communication |
| B1152 (see DTC B1152: GAUGE CONTROL MODULE INTERNAL (EEPROM) ERROR ) | Gauge control module internal (EEPROM) error | Internal error |
| B1155 | Gauge control module lost communication with the MICU unit (headlight switch message) | Loss of communication |
| B1156 (see DTC B1156: GAUGE CONTROL MODULE LOST COMMUNICATION WITH THE MICU (WIPER SWITCH MESSAGE) ) | Gauge control module lost communication with the MICU (wiper switch message) | Loss of communication |
| B1157 (see DTC B1157: GAUGE CONTROL MODULE LOST COMMUNICATION WITH THE MICU (MICU MESSAGE) ) | Gauge control module lost communication with the MICU (MICU message) | Loss of communication |
| B1159 (see DTC B1159: GAUGE CONTROL MODULE LOST COMMUNICATION WITH THE MICU (DOORSW MESSAGE) ) | Gauge control module lost communication with the MICU (DOORSW message) | Loss of communication |
| B1160 (see DTC B1160: GAUGE CONTROL MODULE LOST COMMUNICATION WITH THE MICU (DRLOCKSW MESSAGE) ) | Gauge control module lost communication with the MICU (DRLOCKSW message) | Loss of communication |
| B1168 (see DTC B1168: GAUGE CONTROL MODULE LOST COMMUNICATION WITH THE PCM (ENGINE MESSAGES) ) | Gauge control module lost communication with the PCM (Engine messages) | Loss of communication |
| B1169 (see DTC B1169: GAUGE CONTROL MODULE LOST COMMUNICATION WITH THE PCM (A/T MESSAGE) ) | Gauge control module lost communication with the PCM (A/T messages) | Loss of communication |
| B1170 (see DTC B1170: GAUGE CONTROL MODULE LOST COMMUNICATION WITH THE VSA MODULATOR-CONTROL UNIT (VSA MESSAGE) ) | Gauge control module lost communication with the VSA modulator-control unit (VSA message) | Loss of communication |
| B1173 (see DTC B1173: GAUGE CONTROL MODULE LOST COMMUNICATION WITH TPMS CONTROL UNIT (TPMS MESSAGE) ) | Gauge control module lost communication with TPMS control unit (TPMS message) | Loss of communication |
| B1175 (see DTC B1175: FUEL LEVEL SENSOR (FUEL GAUGE SENDING UNIT) CIRCUIT MALFUNCTION ) | Fuel level sensor (Fuel gauge sending unit) circuit malfunction | Signal error |
| B1176 (see DTC B1176: FUEL LEVEL SENSOR (FUEL GAUGE SENDING UNIT) CIRCUIT SHORT ) | Fuel level sensor (Fuel gauge sending unit) circuit short | Signal error |
| B1178 (see DTC B1178: F-CAN COMMUNICATION CIRCUIT ERROR ) | F-CAN communication circuit error | Loss of communication |
| B1183 (see DTC B1183: GAUGE CONTROL MODULE LOST COMMUNICATION WITH EPS CONTROL UNIT (EPS MESSAGE) ) | Gauge control module lost communication with EPS unit | Loss of communication |
| B1185 (see DTC B1185: GAUGE CONTROL MODULE LOST COMMUNICATION WITH MOTOR CONTROL MODULE (BATT MESSAGE) ) | Gauge control module lost communication with motor control module (BATT message) | Loss of communication |
| B1187 (see DTC B1187: GAUGE CONTROL MODULE LOST COMMUNICATION WITH THE SRS UNIT (SRS MESSAGE) ) | Gauge control module lost communication with the SRS unit (SRS message) | Loss of communication |
MICU
| DTC | Description | DTC type |
|---|---|---|
| B1900 | Communication circuit error (BUS Off) | Loss of communication |
| B1905 (see DTC B1905: IMMOBILIZER UNIT LOST COMMUNICATION WITH MICU (DOOR LOCK SWITCH MESSAGE) ) | Immobilizer unit lost communication with MICU (door lock switch message) | Loss of communication |
| B1906 (see DTC B1906: IMMOBILIZER UNIT LOST COMMUNICATION WITH GAUGE CONTROL MODULE (A/T MESSAGE) ) | Immobilizer unit lost communication with gauge control module (A/T message) | Loss of communication |
IMMOBILIZER-KEYLESS CONTROL UNIT
| DTC | Description | DTC type |
|---|---|---|
| B1775 (see DTC B1775: MICROPHONE INPUT/OUTPUT SHORTED TO POWER (WITHOUT NAVIGATION) ) | Microphone input/output shorted to power | Signal Error |
| B1776 (see DTC B1776: MICROPHONE INPUT/OUTPUT SHORTED TO GROUND OR OPEN (WITHOUT NAVIGATION) ) | Microphone input/output shorted to ground or open | Signal Error |
| B1779 (see DTC B1779: HANDSFREELINK STEERING WHEEL SWITCH FAILURE (WITHOUT NAVIGATION) ) | HandsFreeLink steering wheel switch failure | Signal Error |
| B1780 (see DTC B1780: HANDSFREELINK STEERING WHEEL SWITCH LINE SHORT (WITHOUT NAVIGATION) ) | HandsFreeLink steering wheel switch line short | Signal Error |
| B1792 (see DTC B1792: HANDSFREELINK CONTROL MODULE ERROR (WITHOUT NAVIGATION) ) | HandsFreeLink control module error | Internal Error |
| U1280 | Communication bus line error (BUS-OFF) | Loss of communication |
HANDSFREELINK CONTROL UNIT (WITHOUT NAVIGATION)
| DTC | Detection Item or Symptom | DTC type |
|---|---|---|
| B1200 | Communication bus line error (BUS-OFF) | Loss of communication |
| B1205 (see DTC B1205 OR DTC INDICATOR B: CLIMATE CONTROL UNIT LOST COMMUNICATION WITH GAUGE CONTROL MODULE (VSP/NE MESSAGE); DTC B1206 OR DTC INDICATOR C: CLIMATE CONTROL UNIT LOST COMMUNICATION WITH GAUGE CONTROL MODULE (COOLANT TEMP MESSAGE); DTC B1207 OR DTC INDI ) | Climate control unit lost communication with gauge control module (VSP/NE message) | Loss of communication |
| B1206 (see DTC B1205 OR DTC INDICATOR B: CLIMATE CONTROL UNIT LOST COMMUNICATION WITH GAUGE CONTROL MODULE (VSP/NE MESSAGE); DTC B1206 OR DTC INDICATOR C: CLIMATE CONTROL UNIT LOST COMMUNICATION WITH GAUGE CONTROL MODULE (COOLANT TEMP MESSAGE); DTC B1207 OR DTC INDI ) | Climate control unit lost communication with gauge control module (ECT message) | Loss of communication |
| B1207 (see DTC B1205 OR DTC INDICATOR B: CLIMATE CONTROL UNIT LOST COMMUNICATION WITH GAUGE CONTROL MODULE (VSP/NE MESSAGE); DTC B1206 OR DTC INDICATOR C: CLIMATE CONTROL UNIT LOST COMMUNICATION WITH GAUGE CONTROL MODULE (COOLANT TEMP MESSAGE); DTC B1207 OR DTC INDI ) | Climate control unit lost communication with gauge control module (illumination message) | Loss of communication |
| B1225 (see DTC B1225 OR DTC INDICATOR A AND AUTO: AN OPEN IN THE IN-CAR TEMPERATURE SENSOR CIRCUIT ) | An open in the in-car temperature sensor circuit | Signal error |
| B1226 (see DTC B1226 OR DTC INDICATOR B AND AUTO: A SHORT IN THE IN-CAR TEMPERATURE SENSOR CIRCUIT ) | A short in the in-car temperature sensor circuit | Signal error |
| B1227 (see DTC B1227 OR DTC INDICATOR C AND AUTO: AN OPEN IN THE OUTSIDE AIR TEMPERATURE SENSOR CIRCUIT ) | An open in the outside air temperature sensor circuit | Signal error |
| B1228 (see DTC B1228 OR DTC INDICATOR D AND AUTO: A SHORT IN THE OUTSIDE AIR TEMPERATURE SENSOR CIRCUIT ) | A short in the outside air temperature sensor circuit | Signal error |
| B1229 (see DTC B1229 OR DTC INDICATOR E AND AUTO: AN OPEN IN THE SUNLIGHT SENSOR CIRCUIT ) | An open in the sunlight sensor circuit | Signal error |
| B1230 (see DTC B1230 OR DTC INDICATOR F AND AUTO: A SHORT IN THE SUNLIGHT SENSOR CIRCUIT ) | A short in the sunlight sensor circuit | Signal error |
| B1231 (see DTC B1231 OR DTC INDICATOR G AND AUTO: AN OPEN IN THE EVAPORATOR TEMPERATURE SENSOR CIRCUIT ) | An open in the evaporator temperature sensor circuit | Signal error |
| B1232 (see DTC B1232 OR DTC INDICATOR H AND AUTO: A SHORT IN THE EVAPORATOR TEMPERATURE SENSOR CIRCUIT ) | A short in the evaporator temperature sensor circuit | Signal error |
| B1233 (see DTC B1233 OR DTC INDICATOR A AND A/C: AN OPEN IN THE AIR MIX CONTROL MOTOR CIRCUIT ) | An open in the air mix control motor circuit | Signal error |
| B1234 (see DTC B1234 OR DTC INDICATOR B AND A/C: A SHORT IN THE AIR MIX CONTROL MOTOR CIRCUIT ) | A short in the air mix control motor circuit | Signal error |
| B1235 (see DTC B1235 OR DTC INDICATOR C AND A/C: A PROBLEM IN THE AIR MIX CONTROL MOTOR CIRCUIT, LINKAGE, DOOR, OR MOTOR ) | A problem in the air mix control motor circuit, linkage, door, or motor | Signal error |
| B1239 (see DTC B1239 OR DTC INDICATOR D AND A/C: AN OPEN OR SHORT IN THE MODE CONTROL MOTOR CIRCUIT ) | An open or short in the mode control motor circuit | Signal error |
| B1240 (see DTC B1240 OR DTC INDICATOR E AND A/C: A PROBLEM IN THE MODE CONTROL MOTOR CIRCUIT, LINKAGE, DOOR, OR MOTOR ) | A problem in the mode control motor circuit, linkage, doors, or motor | Signal error |
| B1241 (see DTC B1241 OR DTC INDICATOR F AND A/C: A PROBLEM IN THE BLOWER MOTOR CIRCUIT ) | A problem in the blower motor circuit | Signal error |
| B2967 (see DTC B2967 OR DTC INDICATOR J AND AUTO: AN OPEN IN THE HUMIDITY SENSOR CIRCUIT ) | An open in the humidity sensor circuit | Signal error |
| B2968 (see DTC B2968 OR DTC INDICATOR K AND AUTO: A SHORT IN THE HUMIDITY SENSOR CIRCUIT ) | A short in the humidity sensor circuit | Signal error |
| B2969 (see DTC B2969: CLIMATE CONTROL UNIT LOST COMMUNICATION WITH MICU (WIPSW MESSAGE) ) | Climate control unit lost communication with MICU (WIPSW message) | Loss of communication |
CLIMATE CONTROL UNIT
Self-diagnostic Function (On-board diagnosis)
By connecting the HDS to the data link connector (DLC), the HDS can retrieve the diagnostic information from the MICU via a diagnostic line called the K-LINE. The K-LINE is a separate communication line from the CAN lines, but it is connected to most of the CAN related ECUs. The MICU is a gateway between the HDS and B-CAN related ECUs, and sends B-CAN diagnostic information to the HDS. When doing a function test with the HDS, the HDS sends an output signal through the K-LINE to the MICU. The MICU either relays the request to another ECU, or commands the function itself.
Scheme 2
Sleep and Wake-Up Mode Test
- Shift to the sleep mode: Close all doors. Turn the ignition switch to LOCK (0), and remove the key, then open and close the driver's door. If the MICU receives no signals from the inputs listed below, it will go into sleep mode in less than 40 seconds. IG1 power supply IG2 power supply B-CAN data Hazard warning switch (OFF) Hatch outer handle switch (OFF) Driver's door key cylinder switch (LOCK/UNLOCK) Driver's door lock switch (LOCK/UNLOCK)
- Confirm the sleep mode: NOTE: Check any official Honda service website for more service information about parasitic draw at the battery. Check the parasitic draw at the battery after 40 seconds; amperage should change to less than 35 mA in less than 50 seconds.
- Shift to the wake up mode: When the ignition switch is turned to ON (II), the MICU, the gauge control module, the immobilizer-keyless control unit, the climate control unit, the HandsFreeLink control unit, and the PCM wake up at the same time without "talking" to each other through the communication lines. When any switch in the multiplex integrated control system is turned on, it wakes up its related control unit which, in turn, wakes up the other units. After confirming the sleep mode, look in the following table for the switch most related to the problem. Operate that switch and see if its control unit wakes up. NOTE: If any control unit is faulty and does not wake up, several circuits in the system malfunction at the same time. Below is a list of the switches and the input signals that wake them up. IG1 power supply IG2 power supply ACC power supply Driver's door lock switch (LOCK/UNLOCK) Driver's door switch (door open) Front passenger's door switch (door open) Left rear door switch (door open) Right rear door switch (door open) Hatch latch switch (hatch open) Driver's door key cylinder switch (LOCK/UNLOCK) Driver's door lock knob switch (LOCK/UNLOCK) Front passenger's door lock knob switch (UNLOCK) Left rear door lock knob switch (UNLOCK) Right rear door lock knob switch (UNLOCK) Audio unit or audio-navigation unit switch (security line disconnected) Hatch outer handle switch (switch pressed) Hazard warning switch (ON) Combination light switch (Parking, Headlight, Passing) Ignition key switch (key inserted) Security hood switch (hood open) B-CAN data Keyless transmitter signals
Scheme 3
Scheme 4
MICU Input Test
Note. Before testing, troubleshoot the multiplex integrated control unit first, using B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ). Before testing, check the No. 1 (15 A), No. 10 (7.5 A), No. 14 (7.5 A), No. 20 (15 A) and No. 22 (7.5 A) fuses in the under-dash fuse/relay box.
Scheme 5
- Turn the ignition switch to LOCK (0).
- Remove the fuse access panel (see «FUSE ACCESS PANEL REMOVAL/INSTALLATION»(ref-513196-S26940559112012110700000) ), and remove the driver's dashboard lower cover (see «FUSE ACCESS PANEL REMOVAL/INSTALLATION»(ref-513196-S26940559112012110700000) ).
- Disconnect under-dash fuse/relay box connectors A, B, K, M, N, and Q. NOTE: All connector views are shown from wire side of female terminals.
- Inspect the connector and socket terminals to make 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 look OK, go to step 5.
- With the connectors still disconnected, 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 6 . Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained A25 RED VSA modulator-control unit 47P connector disconnected Check for continuity between terminal A25 and VSA modulator-control unit 47P connector terminal No. 10: There should be continuity. An open in the K-LINE wire B27 RED EPS control unit connector C (16P) disconnected Check for continuity between terminal B27 and EPS control unit connector C (16P) terminal No. 16: There should be continuity. An open in the K-LINE wire Q2 BLU Under all conditions Check for continuity between terminal Q2 and data link connector (DLC) (16P) terminal No. 7: There should be continuity. An open in the K-LINE wire Q2 BLU Immobilizer-keyless control unit 7P connector disconnected Check for continuity between terminal Q2 and immobilizer-keyless control unit 7P connector terminal No. 5: There should be continuity. An open in the K-LINE wire Q2 (1) BLU Audio-Navigation unit connector A (24P) disconnected Check for continuity between terminal Q2 and audio-navigation unit connector A (24P) terminal No. 3: There should be continuity. An open in the K-LINE wire Q2 (2) BLU Audio unit connector A (24P (17P (3) )) disconnected Check for continuity between terminal Q2 and audio unit connector A (24P(17P (3) )) terminal No. 3 (No. 6 (3) ): There should be continuity. An open in the K-LINE wire Q2 (5) BLU TPMS control unit 20P connector disconnected Check for continuity between terminal 0.2 and TPMS control unit 20P connector terminal No. 7: There should be continuity. An open in the K-LINE wire Q2 BLU SRS unit connector A (39P) disconnected Check for continuity between terminal Q2 and SRS unit connector A (39P) terminal No. 18: There should be continuity. An open in the K-LINE wire Q3 GRN Immobilizer-keyless control unit 7P connector disconnected Check for continuity between terminal Q3 and immobilizer-keyless control unit 7P connector terminal No. 4: There should be continuity. An open in the B-CAN wire Q3 GRN Gauge control module 32P connector disconnected Check for continuity between terminal Q3 and gauge control module 32P connector terminal No. 17: There should be continuity. An open in the B-CAN wire Q3 GRN Climate control unit 36P connector disconnected Check for continuity between terminal Q3 and climate control unit 36P connector terminal No. 6: There should be continuity. An open in the B-CAN wire Q3 (4) GRN HandsFreeLink control unit 28P connector disconnected Check for continuity between terminal Q3 and HandsFreeLink control unit 28P connector terminal No. 18: There should be continuity. An open in the B-CAN wire A25 RED Disconnect VSA modulator-control unit 47P connector Check for continuity to ground: There should be no continuity. A short to ground in the K-LINE wire B27 RED Disconnect EPS control unit connector C(16P) Check for continuity to ground: There should be no continuity. A short to ground in the K-LINE wire Q2 BLU Disconnect these connectors: Immobilizer-keyless control unit 7P connector TPMS control unit 20P connector (5) Audio-Navigation unit connector A (24P) (1) Audio unit connector A (24P) (2) Audio unit connector A (17P) (2) (3) SRS unit connector A (39P) Check for continuity to ground: There should be no continuity. A short to ground in the K-LINE wire Q3 GRN Disconnect these connectors: Immobilizer-keyless control unit 7P connector Gauge control module 32P connector Climate control unit 36P connector HandsFreeLink control unit 28P connector (4) Check for continuity to ground: There should be no continuity. A short to ground in the B-CAN wire (1) With navigation (2) Without navigation (3) DX model (4) Without navigation, with HandsFreeLink (5) With TPMS
- Reconnect the connectors to the 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 7 . Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained N2 BLK In all ignition switch positions Measure the voltage to ground: There should be less than 0.2 V. Poor ground(G501) An open or high resistance in the wire K10 BLK In all ignition switch positions Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G502) An open or high resistance in the wire Q9 BLK In all ignition switch positions Measure the voltage to ground: There should be less than 0.2 V. Poor ground(G501) An open or high resistance in the wire M16 BLK In all ignition switch positions Measure the voltage to ground: There should be less than 0.2 V. Poor ground(G502) An open or high resistance in the wire N1 PNK Under all conditions Measure the voltage to ground: There should be battery voltage. Faulty under-dash fuse/relay box An open or high resistance in the wire M18 PUR Ignition switch ACCESSORY (I) Measure the voltage to ground: There should be battery voltage. Faulty under-dash fuse/relay box An open or high resistance in the wire K8 RED Ignition switch ON (II) Measure the voltage to ground: There should be battery voltage. Faulty under-dash fuse/relay box An open or high resistance in the wire Q8 LT BLU Ignition switch ON (II) Measure the voltage to ground: There should be battery voltage. Faulty under-dash fuse/relay box An open or high resistance in the wire Q14 RED Ignition switch ON (II) Measure the voltage to ground: There should be battery voltage. Faulty under-dash fuse/relay box An open or high resistance in the wire
- If multiple failures are found on more than one control unit, replace the under-dash fuse/relay box (includes the MICU). USA model (see «REMOVAL AND INSTALLATION»(ref-513189-S16875978532012110700000) ) Canada model (see «CANADA MODEL»(ref-513189-S10776284102012110700000) ) If input failures are related to a particular control unit, replace the control unit.