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DTC C1148 (41), C1158 (42), C1168 (43), C1178 (44), C1233 (46), C1234 (45), C1235 (47), C1236 (48)

BME040243000204

  Caution

  • When attaching the tester lead to the ABS/TCS HU/CM or ABS HU/CM or the ABS/TCS HU/CM or ABS HU/CM harness connector, the SST (49 G066 001) must be used. (See ABS HU/CM INSPECTION.) (See ABS/TCS HU/CM INSPECTION.)

DTC | C1148 (41), C1234 (45) C1158 (42), C1233 (46) C1168 (43), C1235 (47) C1178 (44), C1236 (48) | RF ABS wheel-speed sensor/sensor rotor LF ABS wheel-speed sensor/sensor rotor RR ABS wheel-speed sensor/sensor rotor LR ABS wheel-speed sensor/sensor rotor
DETECTION CONDITION | • C1148 (41), C1158 (42), C1168 (43), C1178 (44): ABS wheel-speed signal is out of specification when just after vehicle has started move. • C1234 (45), C1233 (46), C1235 (47), C1236 (48): ABS wheel-speed signal malfunction (distortion/sudden change/noise) is detected during driving.
POSSIBLE CAUSE | • Short to ground of ABS wheel-speed sensor(s) circuit • ABS wheel-speed sensor(s) malfunction • Damaged ABS sensor rotor(s) • Incorrect clearance between ABS sensor and sensor rotor

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | VERIFY CURRENT INPUT SIGNAL STATUS IS CONCERN INTERMITTENT OR CONSTANT • Turn ignition key to OFF. • Connect SST (WDS) to DLC-2. • Start engine and drive vehicle. • Access LF WSPD, LR WSPD, RF WSPD and RR WSPD PID using SST (WDS)
• Do vehicle speeds correspond approximately to the four PIDs above?
Yes
Inspect intermittent concern using the same procedure as engine control system.
(See INTERMITTENT CONCERN TROUBLESHOOTING [L3])
(See INTERMITTENT CONCERN TROUBLESHOOTING [AJ])
(See INTERMITTENT CONCERN TROUBLESHOOTING [MZR-CD (RF Turbo)])
No | PID(s) indicates 0 km/h {0 mph} during driving: • Go to next step PID(s) are not equal: • Go to Step 7
2 | INSPECT ABS WHEEL-SPEED SENSOR CIRCUIT FOR SHORT TO GROUND • Turn ignition key to OFF. • Disconnect ABS/TCS HU/CM or ABS HU/CM connector. • Connect SST (adapter harness) to ABS/TCS HU/CM or ABS HU/CM connector (harness side). • Inspect continuity between suspected sensor terminal(s) of SST (adapter harness) and ground(s).

  - RF ABS wheel-speed sensor: G
  - LF ABS wheel-speed sensor: I
  - RR ABS wheel-speed sensor: A
  - LR ABS wheel-speed sensor: C

• Is there continuity?
Yes
Go to next step.
No | Go to Step 4.
3 | INSPECT ABS WHEEL-SPEED SENSOR FOR SHORT TO GROUND • With ignition key at OFF, disconnected suspected sensor connector(s), inspect continuity between suspected sensor terminal(s) 1 (part side) and ground(s). • Is there continuity? | Yes | Replace ABS wheel-speed sensor(s), then go to Step 10.
No | Repair or replace harness (short to ground) between ABS/TCS HU/CM or ABS HU/CM and ABS wheel-speed sensor connector(s), then go to Step 10.
4 | INSPECT ABS WHEEL-SPEED SENSOR • Measure resistance between suspected sensor terminals of SST:

  - RF ABS wheel-speed sensor: G-D
  - LF ABS wheel-speed sensor: E-I
  - RR ABS wheel-speed sensor: A-B
  - LR ABS wheel-speed sensor: C-F

• Is resistance within 1.3-1.7 kilohm?
Yes
Go to Step 6.
No | Go to next step.
5 | INSPECT ABS WHEEL-SPEED SENSOR • With ignition key at OFF and disconnect suspected ABS wheel-speed sensor connector, measure resistance between sensor terminals (part side). • Is resistance within 1.3-1.7 kilohm? | Yes | Repair or replace harness for short to ground circuit between ABS/TCS HU/CM or ABS HU/CM to ABS wheel-speed sensor power circuit and ground circuit, then go to Step 10.
No | Replace ABS wheel-speed sensor, then go to Step 10.
6 | INSPECT SENSOR ROTOR CLEARANCE • Jack-up vehicle and support it with safety stands. • Remove suspected wheel(s). • Inspect clearance between sensor and rotor. • Is clearance within 0.3-1.1 mm {0.12-0.043 in}? | Yes | Go to Step 10.
No | Replace ABS wheel-speed sensor(s), then go to Step 10.
7 | INSPECT ABS WHEEL-SPEED SENSOR OUTPUT PULSE • Start engine and drive vehicle. • Inspect output voltage pattern using an oscilloscope. (See Voltage Pattern Inspection) • Is output voltage pattern okay? | Yes | Go to Step 10.
No | Go to Step 6.
8 | INSPECT SENSOR ROTOR FOR DAMAGE • Jack-up vehicle and support it with safety stands. • Remove suspected wheel(s). • Visually inspect sensor rotor for missing, deformed and obstructed teeth. Number of teeth: 44
• Is sensor rotor okay?
Yes
Go to next step.
No | Replace rotor, then go to Step 10.
9 | INSPECT SENSOR ROTOR CLEARANCE • Inspect clearance between sensor and rotor. • Is clearance within 0.3-1.1 mm {0.12-0.043 in}? | Yes | Go to next step.
No | Replace ABS wheel-speed sensor, then go to next step.
10 | VERIFY TROUBLESHOOTING COMPLETED • Make sure to reconnected all disconnected connectors. • Clear DTC from memory (See Clearing DTCs Procedure) • Start engine and drive vehicle at 10 km/h {6.2 mph} or above.
• Gradually slow down vehicle and stop.
• Is same DTC present?
Yes
Replace ABS/TCS HU/CM or ABS HU/CM, then go to next step.
No | Go to next step.
11 | VERIFY AFTER REPAIR PROCEDURE • Is there any other DTC present? | Yes | Go to applicable DTC inspection.
No | Troubleshooting completed.