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ABS (ABS/TCS) HU/CM INSPECTION

id041300802700

1. Disconnect the ABS (ABS/TCS) HU/CM connector.

2. Connect the negative battery cable.

3. Attach the tester lead to the ABS (ABS/TCS) HU/CM wiring harness-side connector, then inspect the voltage, continuity, or resistance according to the standard (reference) on the table.

## Terminal Voltage Table (Reference)

Terminal | Signal name | Connected to | Measured item | Measured terminal (measured condition) | Standard | Inspection item (s)
--- | --- | --- | --- | --- | --- | ---
A | RR wheel-speed sensor (signal) | RR ABS wheel-speed sensor | Continuity | A-RR ABS wheel-speed sensor connector terminal A | Continuity detected | • Wiring harness (A-RR ABS wheel-speed sensor connector terminal A)
B | RR wheel-speed sensor (ground) | RR ABS wheel-speed sensor | Continuity | B-RR ABS wheel-speed sensor connector terminal B | Continuity detected | • Wiring harness (B-RR ABS wheel-speed sensor connector terminal B)
C | LR wheel-speed sensor (signal) | LR ABS wheel-speed sensor | Continuity | C-LR ABS wheel-speed sensor connector terminal A | Continuity detected | • Wiring harness (C-LR ABS wheel-speed sensor connector terminal A)
D | RF wheel-speed sensor (ground) | RF ABS wheel-speed sensor | Continuity | D-RF ABS wheel-speed sensor connector terminal B | Continuity detected | • Wiring harness (D-RF ABS wheel-speed sensor connector terminal B)
E | LF wheel-speed sensor (ground) | LF ABS wheel-speed sensor | Continuity | E-LF ABS wheel-speed sensor connector terminal B | Continuity detected | • Wiring harness (E-LF ABS wheel-speed sensor connector terminal B)
F | LR wheel-speed sensor (ground) | LR ABS wheel-speed sensor | Continuity | F-LR ABS wheel-speed sensor connector terminal A | Continuity detected | • Wiring harness (F-LR ABS wheel-speed sensor connector terminal A)
G | RF wheel-speed sensor (signal) | RF ABS wheel-speed sensor | Continuity | G-RF ABS wheel-speed sensor connector terminal A | Continuity detected | • Wiring harness (G-RF ABS wheel-speed sensor connector terminal A)
H | - | - | - | - | - | -
I | LF wheel-speed sensor (single) | LF ABS wheel-speed sensor | Continuity | I-LF ABS wheel-speed sensor connector terminal A | Continuity detected | • Wiring harness (I-LF ABS wheel-speed sensor connector terminal A)
J | - | - | - | - | - | -
K | - | - | - | - | - | -
L | - | - | - | - | - | -
M | - | - | - | - | - | -
N | - | - | - | - | - | -
O | CAN_H | DLC-2 (CAN_H) | Continuity | O-DLC-2 terminal CAN_H | Continuity detected | • Wiring harness (O-DLC-2 terminal CAN_H)
P | TCS OFF switch | TCS OFF switch | Continuity | P-TCS OFF switch | Continuity detected | • Wiring harness (P-TCS OFF switch)
Q | - | - | - | - | - | -
R | CAN_L | DLC-2 (CAN_L) | Continuity | R-DLC-2 terminal CAN_L | Continuity detected | • Wiring harness (R-DLC-2 terminal CAN_L)
S | - | - | - | - | - | -
T | - | - | - | - | - | -
U | - | - | - | - | - | -
V | Vehicle speed output | BCM | Continuity | V-BCM terminal connectro 9B | Continuity detected | • Wiring harness (V-BCM terminal connector9B)
W | - | - | - | - | - | -
X | KLN | DLC-2 (KLN) | Continuity | X-DLC-2 terminal KLN | Continuity detected | • Wiring harness (X-DLC-2 terminal KLN)
Y | - | - | - | - | - | -
Z | Power supply (system) | Ignition switch | Voltage | Ignition switch at ON | B+ | • Wiring harness (Z-ignition switch)
Ignition switch is off. | 1 V or less | -
AA | Power supply (solenoid) | Battery | Voltage | Under any condition | B+ | • Wiring harness (AA-battery)
AB | Power supply (ABS motor operation) | Battery | Voltage | Under any condition | B+ | • Wiring harness (AB-battery)
AC | Ground (ABS system) | Ground point | Continuity | AC-ground point | Continuity detected | • Wiring harness (AC-ground point)
AD | Ground (ABS motor) | Ground point | Continuity | AD-ground point | Continuity detected | • Wiring harness (AD-ground point)