Sensor MITSUBISHI ENDEAVOR 2004 Service Repair Manual

Fig. 88: G And Yaw Rate Sensor Circuit Diagra
m
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Fig. 89: Identifying Connectors: A
-32, C
-24, C
-04, C
-31, C101, B
-18, C
-36, C
-
214, C
-215

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
CIRCUIT OPERATION
CAUTION: If there is any problem in the CAN bus lines, an
incorrect dia
gnostic trouble code ma
y be set. Prior to
this diagnosis, diagnose the CAN bus lines.

2004 Mitsubishi Endeavor LS
2004 BRAKES Traction Control, Active Skid Control System - Endeavor

The TCL/ASC-ECU gathers information regarding lateral and longitudinal
accelerations and yaw rate, through the CAN bus line from the G and yaw rate
sensor. TCL/ASC DTC SET CONDITIONS The TCL/ASC-ECU activates the G and yaw rate sensor via a CAN bus line in
order to diagnose the sensor whenever the ignition switch is turned on. If the G and
yaw rate sensor does not respond to this request, this DTC will be set. TROUBLESHOOTING HINTS (The most likely causes for these DTC are to set are:)
Current trouble
The CAN bus line is defective. Damaged connector(s) The G and yaw rate sensor is defective. The TCL/ASC-ECU is defective.
Past trouble Carry out diagnosis with particular emphasis on connector(s) or wiring harness
between the TCL/ASC-ECU and the G and yaw rate sensor. For diagnosis
procedures, refer to HOW TO COPE WITH INTERMITTENT MALFUNCTIONS
.
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
STEP 1. Using scan tool MB991958, diagnose the CAN bus line.
CAUTION: To prevent damage to scan tool MB991958,

2004 Mitsubishi Endeavor LS
2004 BRAKES Traction Control, Active Skid Control System - Endeavor

6. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC C1223 set?
YES: Go to Step 3.
NO: The procedure is complete.
STEP 3. Using scan tool MB991958, check data list items 30: Straight G
sensor, 31: Lateral G sensor and 33: Yaw rate G sensor.
1. Connect scan tool MB991958 to the data link connec
tor. 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 Traction Control, Active Skid Control System - Endeavor

2. Turn the ignition switch to the "ON" position.
3. Set scan tool MB991958 to data reading mode for item 30: Straight G
sensor, item 31: Lateral G sensor and item 33: Yaw rate G sensor.
Item 30: Straight G sensor
Acceleration should change within the range of -9.8 -9.8 m/s
2
during running.
Item 31: Lateral G sensor
Acceleration should change within the range of -9.8 -9.8 m/s
2
during running.
Item 33: Yaw late sensor
Angular velocity should change within the range of -50 -50 deg/s
during running.
Q: Does the G and yaw rate sensor output correct acceleration and
angular velocity?
YES: Go to Step 5.
NO: Go to Step 4.
STEP 4. Recheck for diagnostic trouble code after the G and yaw rate
sensor is replaced.
Replace the G and yaw rate sensor, and check whether DTC C1223 is reset.
1. Replace the G and yaw rate sensor.
2. Connect scan tool MB991958 to the data link connec
tor. 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 Traction Control, Active Skid Control System - Endeavor

Fig. 129: Disconnecting Parking Brake Switch Connector C
-34
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
2. Turn the ignition switch to the "ON" position.
Q: Does the brake warning light illuminate?
YES: Go to Step 6.
NO: Check the brake fluid level switch (Refer to BRAKE FLUID
LEVEL SENSOR CHECK
, ) and parking brake switch and replace
them if necessary. Then go to Step 12.
STEP 6. Measure the resistance at combination meter connector C-102.
1. Disconnect brake fluid level switch connector A-04 and parking brake
switch connector
C-34.

2004 Mitsubishi Endeavor LS
2004 BRAKES Traction Control, Active Skid Control System - Endeavor

6. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC C1345 set?
YES: Go to Step 1.
NO: The procedure is complete.
DTC C1361: M/C PRESSURE SNSR. STUCK/LOW GAIN, DTC C1362: M/C PRESSURE SNSR. LOW VOLTAGE,
DTC C1363: M/C PRESSURE SNSR. HIGH VOLTAGE CIRCUIT OPERATION The master cylinder pressure sensor is incorporated in the hydraulic unit. When the
brake pedal is depressed, the sensor detects the fluid pressure in the master cylinder,
and converts it to voltage signal. TCL/ASC DTC SET CONDITIONS This DTC is set if the master cylinder pressure sensor is defective. TROUBLESHOOTING HINTS (The most likely causes for these DTCs are to set are:)
The CAN bus line is defective. Malfunction of the hydraulic unit (integrated with TCL/ASC-ECU)
DIAGNOSIS Required Special Tools:
MB991958: Scan Tool (MUT-III Sub Assembly)
MB991824: Vehicle Communication Interface (V.C.I.) MB991827: MUT-III USB Cable 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.
CAUTION: Whenever the ECU is replaced, ensure that the CAN
bus lines are normal.

2004 Mitsubishi Endeavor LS
2004 BRAKES Traction Control, Active Skid Control System - Endeavor

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
2. Turn the ignition switch to the "ON" position.
3. Diagnose the CAN bus line.
4. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the CAN bus line found to be normal?
YES: Go to Step 2.
NO: Repair the CAN bus line (Refer to DIAGNOSTIC TROUBLE
CODE DIAGNOSIS
or DIAGNOSIS < VEHICLES WITHOUT
ADVANCED AIR BAG
). Then go to Step 2.
STEP 2. Recheck for diagnostic trouble code.
1. Turn the ignition switch to the "ON" position.
2. Erase the DTC.
3. Turn the ignition switch to the "LOCK" (OFF) position.
4. Turn the ignition switch to the "ON" position.
5. Check if the DTC is set.
6. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC C1361, C1362 or C1363 set?
YES: Replace the hydraulic unit (integrated with TCL/ASC-ECU).
NO: The procedure is complete.
DTC C1366: LATERAL G SNSR. STUCK/LOW GAIN, DTC C1371: YAW RATE SNSR. STUCK/LOW GAIN, DTC
C1381: STRAIGHT G SNSR. STUCK/LOW GAIN, DTC C1385: YAW RATE SENSOR, DTC C1386: STRAIGHT G
SENSOR/G PERFORMANCE, DTC C1387: LATERAL G SENSOR/G PERFORMANCE (LATERAL G SENSOR OR
G PERFORMANCE), DTC C1388: YAW RATE SENSOR ACTIVE CHECK, DTC C1389: STRAIGHT G SENSOR
ACTIVE CHECK, DTC C1390: LATERAL G SENSOR ACTIVE CHECK
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 Traction Control, Active Skid Control System - Endeavor

Fig. 143: G And Yaw Rate Sensor Circuit Diagram

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

2004 Mitsubishi Endeavor LS
2004 BRAKES Traction Control, Active Skid Control System - Endeavor

Fig. 144: Identifying Connectors: A
-32, C
-24, C
-04, C
-31, C
-101, B
-18, C
-36,
C-214, C
-215

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
CIRCUIT OPERATION
The G and yaw rate sensor is energized by the ignition switch (IG2) through
multi-purpose fuse 13 and the G and yaw rate sensor terminal 1. The G and
yaw rate sensor out
put si
gnal is sent to the TCL/AS
C-ECU via the
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 Traction Control, Active Skid Control System - Endeavor

CAN bus line.
TCL/ASC DTC SET CONDITIONS These codes are set at the following cases: DTC C1366: LATERAL G-SENSOR (SEIZURE OR ABNORMAL OUTPUT SIGNAL)
Lateral acceleration value from the sensor is abnormal, or the value does not
fluctuate during driving.
DTC C1371: YAW RATE G-SENSOR (SEIZURE, ABNORMAL OUTPUT SIGNAL OR OSCILLATION)
Yaw rate value from the sensor is abnormal, or the value does not fluctuate
during driving.
DTC C1381: STRAIGHT G-SENSOR (SEIZURE OR ABNORMAL OUTPUT SIGNAL)
Longitudinal acceleration value from the sensor is abnormal, or the value does
not fluctuate during driving.
DTC C1385: YAW RATE SENSOR (ABNORMAL OUTPUT OR POOR PERFORMANCE)
The system receives a abnormal flag for at least one second. The system receives a poor performance flag for at least 2.5 seconds.
DTC C1386: STRAIGHT G-SENSOR (LONGITUDINAL OR LATERAL PERFORMANCE DETERIORATED)
The system receives a abnormal flag for at least one second.
DTC C1387: LATERAL G-SENSOR/G PERFORMANCE (LATERAL G-SENSOR OR G PERFORMANCE) <
LONGITUDINAL OR LATERAL PERFORMANCE DETERIORATED >
The system receives a abnormal flag for at least one second. The system receives a poor performance flag for at least 2.5 seconds.
DTC C1388: YAW RATE SENSOR ACTIVE CHECK (ACTIVE CHECK FAILURE)
The system receives a abnormal flag for at least one second. The system receives a poor performance flag for at least 2.5 seconds.
DTC C1389: STRAIGHT G-SENSOR ACTIVE CHECK (ACTIVE CHECK FAILURE)
2004 Mitsubishi Endeavor LS
2004 BRAKES Traction Control, Active Skid Control System - Endeavor