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Standard (Reference)

WARNING: This page is about a different car, the 2014 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying DSC HU/CM Connector Terminals
G09785870Courtesy of MAZDA MOTORS CORP.
Terminal Signal name Connected to Measured item Measured terminal (measurement condition) Standard Inspection item(s)
A Ground (system) Ground point Continuity A-ground point Continuity detected
  • Wiring harness (A-ground point)
B Ground (pump motor) Ground point Continuity B-ground point Continuity detected
  • Wiring harness (B-ground point)
C Brake light (vehicles with Mazda Radar Cruise Control (MRCC) system or Smart City Brake Support (SCBS)) Brake light relay(1) or brake light unit(2)(3) Voltage Brake pedal depressed B+
  • Wiring harness (C-Brake light relay terminal D or brake light unit terminal H)
Brake pedal not depressed 1 V or less
D CAN_L CAN module This terminal is used for communication and cannot be used for malfunction determination during terminal voltage inspection. Perform a DTC inspection.
E CAN_H CAN module This terminal is used for communication and cannot be used for malfunction determination during terminal voltage inspection. Perform a DTC inspection.
F CAN2_L SAS control module This terminal is used for communication and cannot be used for malfunction determination during terminal voltage inspection. Perform a DTC inspection.
G CAN2_H SAS control module This terminal is used for communication and cannot be used for malfunction determination during terminal voltage inspection. Perform a DTC inspection.
H - - - - - -
I LR wheel-speed sensor (-) LR ABS wheel-speed sensor Continuity I-LR ABS wheel-speed sensor terminal B Continuity detected
  • Wiring harness (I-LR ABS wheel-speed sensor terminal B)
J RR wheel-speed sensor (-) RR ABS wheel-speed sensor Continuity J-RR ABS wheel-speed sensor terminal B Continuity detected
  • Wiring harness (J-RR ABS wheel-speed sensor terminal B)
K - - - - - -
L LR wheel-speed sensor(+) LR ABS wheel-speed sensor Continuity L-LR ABS wheel-speed sensor terminal A Continuity detected
  • Wiring harness (L-LR ABS wheel-speed sensor terminal A)
M RR wheel-speed sensor (+) RR ABS wheel-speed sensor Continuity M-RR ABS wheel-speed sensor terminal A Continuity detected
  • Wiring harness (M-RR ABS wheel-speed sensor terminal A)
N - - - - - -
O RF wheel-speed sensor (-) RF ABS wheel-speed sensor Continuity O-RF ABS wheel-speed sensor terminal B Continuity detected
  • Wiring harness (0-RF ABS wheel-speed sensor terminal B)
P LF wheel-speed sensor (-) LF ABS wheel-speed sensor Continuity P-LF ABS wheel-speed sensor terminal B Continuity detected
  • Wiring harness (P-LF ABS wheel-speed sensor terminal B)
Q - - - - - -
R RF wheel-speed sensor (+) RF ABS wheel-speed sensor Continuity R-RF ABS wheel-speed sensor terminal A Continuity detected
  • Wiring harness (R-RF ABS wheel-speed sensor terminal A)
S LF wheel-speed sensor (+) LF ABS wheel-speed sensor Continuity S-LF ABS wheel-speed sensor terminal A Continuity detected
  • Wiring harness (S-LF ABS wheel-speed sensor terminal A)
T - - - - - -
U - - - - - -
V - - - - - -
W - - - - - -
X - - - - - -
Y - - - - - -
Z - - - - - -
AA - - - - - -
AB - - - - - -
AC - - - - - -
AD - - - - - -
AE - - - - - -
AF Power supply (system) IG1 relay Voltage Ignition switched ON (engine off). B+
  • Wiring harness (AF-IG1 relay)
Switch the ignition off. 1 V  or less
AG Power supply (solenoid operation) Battery Voltage Under any condition B+
  • Wiring harness (AG-battery)
AH Power supply (pump motor operation) Battery Voltage Under any condition B+
  • Wiring harness (AH-battery)
(1) Vehicles with Smart City Brake Support (SCBS)
(2) Vehicles with Mazda Radar Cruise Control (MRCC) system
(3) Vehicles with Mazda Radar Cruise Control (MRCC) system and Smart City Brake Support (SCBS)
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