ON-BOARD DIAGNOSTIC SYSTEM FUNCTION [ACTIVE BONNET]

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On-board diagnostic function

Malfunction detection function

  • Detects overall malfunctions in the active bonnet-related parts.

Fail-safe function

  • If the active bonnet control module performance/function cannot be maintained for any cause, the fail-safe function stops the active bonnet control and flashes the active bonnet warning light to prevent the active bonnet actuator from deploying accidentally.

Memory function

  • Stores malfunctions in the active bonnet-related parts detected by the malfunction detection function, and the stored malfunction contents are not cleared even if the ignition is switched to LOCK or the negative battery cable is disconnected.

Display Function

  • If the malfunction detection function detects a malfunction, the active bonnet warning light is illuminated to alert the driver. DTCs can be output to the DLC-2 using the external tester communication function.

DTC table

X: Applicable
−: Not applicable

DTC | Active bonnet warning light | System malfunction location | Memory function
--- | --- | --- | ---
Flashing pattern | Order of precedence
B00D2:01 | − | Continuously illuminated | 1 | Active bonnet warning light malfunction | X
B00D2:29 | Active bonnet warning light communication error | X
B1001:11 | 19 |  | 11 | Active bonnet actuator (RH) circuit short to ground | X
B1001:12 | Active bonnet actuator (RH) circuit short to power supply | X
B1001:13 | Active bonnet actuator (RH) circuit open circuit or resistance high | X
B1001:19 | Short circuit in active bonnet actuator (RH) and (LH) circuits | X
B1001:1A | Active bonnet actuator (RH) circuit resistance low | X
B1003:11 | 21 |  | 10 | Active bonnet actuator (LH) circuit short to ground | X
B1003:12 | Active bonnet actuator (LH) circuit short to power supply | X
B1003:13 | Active bonnet actuator (LH) circuit open circuit or resistance high | X
B1003:19 | Short circuit in active bonnet actuator (LH) and (RH) circuits | X
B1003:1A | Active bonnet actuator (LH) circuit resistance low | X
B1011:95 | 58 |  | 5 | Active bonnet control module connector partially disconnected | X
B1193:00 | 13 |  | 3 | Recording of active bonnet control module collision data | X
B1422:11 | 44 |  | 6 | Active bonnet sensor (right) circuit short to ground | X
B1422:13 | Active bonnet sensor (right) circuit open circuit or short to body ground | X
B1422:87 | No reception of active bonnet sensor (right) signal | X
B1422:55 | Active bonnet control module internal malfunction | X
B1422:96 | Active bonnet sensor (right) internal malfunction | X
B1423:11 | 43 |  | 7 | Active bonnet sensor (right, center) circuit short to ground | X
B1423:13 | Active bonnet sensor (right, center) circuit open circuit or short to power supply | X
B1423:87 | No reception of active bonnet sensor (right, center) signal | X
B1423:55 | Active bonnet control module internal malfunction | X
B1423:96 | Active bonnet sensor (right, center) internal malfunction | X
B1424:11 | 46 |  | 8 | Active bonnet sensor (left, center) circuit short to ground | X
B1424:13 | Active bonnet sensor (left, center) circuit open circuit or short to power supply | X
B1424:87 | No reception of active bonnet sensor (left, center) signal | X
B1424:55 | Active bonnet control module internal malfunction | X
B1424:96 | Active bonnet sensor (left, center) internal malfunction | X
B1425:11 | 45 |  | 9 | Active bonnet sensor (left) circuit short to ground | X
B1425:13 | Active bonnet sensor (left) circuit open circuit or short to power supply | X
B1425:87 | No reception of active bonnet sensor (left) signal | X
B1425:55 | Active bonnet control module internal malfunction | X
B1425:96 | Active bonnet sensor (left) internal malfunction | X
U0001:88 | 14 |  | 4 | CAN communication error | X
U0100:68 | Communication error with PCM (vehicle speed signal) | X
U0155:00 | Instrument cluster communication error | X
U3000:49 | 12 |  | 2 | Active bonnet control module internal malfunction | X
U3003:16 | − | Continuously illuminated | 1 | Active bonnet control module power supply voltage decrease (less than 8 V) | X
U3003:17 | Active bonnet control module power supply voltage increase (18 V or more) | X

Snapshot data table

  Note
  • Depending on the output DTC, snapshot data items may not be displayed.

Snapshot data item | Unit | Data contents | Corresponding data monitor items
--- | --- | --- | ---
DHS_T_TIME | hh:mm:ss | Time when first malfunction occurs (Accumulated IG-ON time*1) • Accumulated IG-ON time until active bonnet control module detects first malfunction (See Snapshot counter pattern.) | −
FAULT_CNT | − | Number of malfunction detected | −
FIRST_DET_IG | hh:mm:ss | Time when initial malfunction occurs (IG-ON counter) • Elapsed time from when the ignition was switched ON until active bonnet control module detects first malfunction (See Snapshot counter pattern.) | −
LAST_CLR | hh:mm:ss | Repair time for last malfunction (Accumulated IG-ON time*1) • Accumulated IG-ON time until active bonnet control module detects last malfunction is repaired (See Snapshot counter pattern.) | −
LAST_CLR_IG | hh:mm:ss | Repair time for last malfunction (IG-ON counter) • Elapsed time from when the ignition was switched ON until active bonnet control module detects last malfunction repair (See Snapshot counter pattern.) | −
LAST_DET | hh:mm:ss | Time when last malfunction occurs (Accumulated IG-ON time*1) • Accumulated IG-ON time until active bonnet control module detects last malfunction (See Snapshot counter pattern.) | −
LAST_DET_IG | hh:mm:ss | Time when last malfunction occurs (IG-ON counter) • Elapsed time from when the ignition was switched ON until active bonnet control module detects last malfunction (See Snapshot counter pattern.) | −

*1 :Accumulated time during IG-ON while active bonnet control module records

Snapshot counter pattern

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Snapshot verification time period | FAULT_CNT | FIRST_DET_IG | LAST_CLR | LAST_CLR_IG | LAST_DET | LAST_DET_IG | DHS_T_TIME
--- | --- | --- | --- | --- | --- | --- | ---
Number of malfunction detected | Time when initial malfunction occurs (IG-ON counter) | Repair time for last malfunction (Accumulated IG-ON time) | Repair time for last malfunction (IG-ON counter) | Time when last malfunction occurs (Accumulated IG-ON time) | Time when last malfunction occurs (IG-ON counter) | Time when first malfunction occurs (Accumulated IG-ON time)
1 | 1 | Tig1 | − | − | Tb1 | Tig1 | Tb1
2 | 2 | Tig1 | Tb4 | Tig4 | Tb3 | Tig3 | Tb1
3 | 2 | Tig1 | Tb4 | Tig4 | Tb3 | Tig3 | Tb1
4 | 3 | Tig1 | Tb4 | Tig4 | Tb5 | Tig5 | Tb1
5 | 3 | Tig1 | Tb6 | Tig6 | Tb5 | Tig5 | Tb1

PID/data monitor function

  • With the PID/data monitor function, input/output signal monitor items set in the active bonnet control module can be selected and read out in real-time.
  • Use the Mazda Modular Diagnostic System (M-MDS) to read the PID/data monitor.

PID/data monitor table

PID name (definition) | Unit/Operation | Operation Status (Reference) | Terminal
--- | --- | --- | ---
DHS_WL (Active bonnet warning light condition) | Lamp_Off/Lamp_On | • Active bonnet warning light is not illuminated: Lamp_Off • Active bonnet warning light is illuminated: Lamp_On | 2M, 2O
RES_ACTU1 (Active bonnet actuator (RH) resistance) | ohm | Continuous: 1.63―7.60 ohm | 1A, 1C
RES_ACTU2 (Active bonnet actuator (LH) resistance) | ohm | Continuous: 1.63―7.60 ohm | 1G, 1E
RES_PCD_BAR (Partially disconnected detection bar resistance (All connector total)) | ohm | • Connector connected: 100 ohms or less • Connector partially disconnected: 20 kilohms or more | 1a, 1b, 2a, 2b, 3a, 3b
VPWR_IGA (IG1 voltage value) | V | • Ignition is switched ON: B+ • Ignition is switched to LOCK: 1.0 V or less | 3A