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Fig. 84: G
-Sensor Circuit Diagram < AWD >
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Fig. 85: Identifying Connectors A
-02, C
-04, C
-23, C
-214, C
-215
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
CIRCUIT OPERATION The G-sensor detects acceleration or deceleration, and converts it to a voltage signal
to send to the ABS-ECU (terminal 15). ABS DTC SET CONDITIONS These codes are set at the following cases:
DTC C1381:
G-sensor (out
put seized)
CAUTION: If there is any problem in the CAN bus lines, an
incorrect diagnostic trouble code may be set. Prior to
this diagnosis, diagnose the CAN bus lines.
2004 Mitsubishi Endeavor LS
2004 BRAKES Anti-Lock Braking System (ABS) - Endeavor
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When there is no variation in the G-sensor output voltage (G-sensor output
seized)
DTC C1382: G-sensor (low signal voltage problem) When the G-sensor output is lower than 0.5 V (Open circuit in G-sensor
circuit) When the ABS-ECU for AWD has installed incorrectly to the FWD vehicle
DTC C1383: G-sensor (high signal voltage problem) When the G-sensor output voltage is higher than 4.5 V (Open circuit in G-
sensor circuit)
TROUBLESHOOTING HINTS (THE MOST LIKELY CAUSES FOR THESE DTCS ARE TO SET ARE:)
Current trouble
Faulty ABS-ECU (for AWD) installation to the FWD vehicle Malfunction of the G-sensor Damaged wiring harness or connector Malfunction of the hydraulic unit (integrated with ABS-ECU)
PAST TROUBLE Carry out diagnosis with particular emphasis on connector(s) or wiring harness
between the ABS-ECU and the G-sensor. For diagnosis procedures, refer to HOW TO USE TROUBLESHOOTING/ INSPECTION SERVICE POINTS
.
DIAGNOSIS Required Special Tools:
MB991958: Scan Tool (MUT-III Sub Assembly)
MB991824: Vehicle Communication Interface (V.C.I.) MB991827: MUT-III USB Cable MB991910: MUT-III Main Harness A
2004 Mitsubishi Endeavor LS
2004 BRAKES Anti-Lock Braking System (ABS) - Endeavor
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STEP 1. Using scan tool MB991958, diagnose the CAN bus line.
1. Connect scan tool MB991958 to the data link connec
tor. CAUTION: If the ABS-ECU for AWD has installed incorrectly to
FWD vehicle, DTC C1382 is set. Before
troubleshooting, make sure the correct ABS-ECU for
FWD has installed to FWD vehicle.
CAUTION: To prevent damage to scan tool MB991958,
always turn the ignition switch to the
"LOCK" (OFF) position before connecting or
disconnecting scan tool MB991958.
2004 Mitsubishi Endeavor LS
2004 BRAKES Anti-Lock Braking System (ABS) - Endeavor
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Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
2. Turn the ignition switch to the "ON" position.
3. Set scan tool MB991958 to data reading mode for item 30, Straight G
sensor.
Voltage should measure 2.4 - 2.6 volts when the vehicle is stopped at
a level surface. Voltage should change within the range of 1.4 - 3.6 volts during
running.
Q: Is the G-sensor output voltage normal?
YES: It can be assumed that this malfunction is intermittent. Refer to
HOW TO COPE WITH INTERMITTENT MALFUNCTIONS
.
NO: Go to Step 4.
STEP 4. Measure the voltage at A-02 ABS-ECU connector.
1. Park the vehicle on a level surface.
2. Disconnect ABS-ECU connector A-02, and connect ABS Check Harness
(MB991970) between the ABS-ECU side and the wiring harness side
connectors.
3. Turn the ignition switch to the "ON" position.
4. Measure the voltage between terminal 15 and terminal 8.
Volta
ge should measure 2.4 - 2.6 volts. NOTE: Measurement should be made by using the check
connector of special tool ABS check harness
MB991970.
2004 Mitsubishi Endeavor LS
2004 BRAKES Anti-Lock Braking System (ABS) - Endeavor
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Fig. 89: Measuring Voltage At A
-02 ABS
-ECU Connector
Courtes
y of MITSUBISHI MOTOR SALES OF AMERICA
.
2004 Mitsubishi Endeavor LS
2004 BRAKES Anti-Lock Braking System (ABS) - Endeavor
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Q: Is the
G-sensor output voltage normal?
YES: Go to Step 5.
NO: Go to Step 6 .
STEP 5. Measure the voltage at A-02 ABS-ECU connector.
1. Remove the G-sensor, and hold it so that its arrow mark faces down as
shown with G-sensor connector C-23 connected.
Fig. 90: Identifying G
-Sensor Lable
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
2. Turn the ignition switch to the "ON" position.
3. Measure the voltage between terminal 15 and terminal 8.
NOTE: Measurement should be made by using the check
2004 Mitsubishi Endeavor LS
2004 BRAKES Anti-Lock Braking System (ABS) - Endeavor
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Fig. 95: Checking G
-Sensor Connector C
-23
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Check the connectors, for loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Are the connectors and terminals in good condition?
YES: Open or short circuit may be present in the G-sensor power supply
lines. Repair the wiring harness between G-sensor connector C-23
terminal 1 and junction block connector C-215 terminal 2. Then go to Step
13 .
NO: Repair or replace the damaged component(s). Then go to Step 13 .
STEP 9. Check the following connectors.
AB
S-ECU connector A-02
2004 Mitsubishi Endeavor LS
2004 BRAKES Anti-Lock Braking System (ABS) - Endeavor
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Fig. 96: Checking ABS
-ECU Connector A
-02
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
G-sensor connector C-23
2004 Mitsubishi Endeavor LS
2004 BRAKES Anti-Lock Braking System (ABS) - Endeavor
