Page 217 of 3870
Fig. 126: Identifying Connectors: C
-214, C
-215
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
CIRCUIT OPERATION
The ABS-ECU is energized by the ignition switch (IG2) through multi-purpose
fuse 13 and the ABS-ECU terminal 20. If the power supply to the ABS-ECU has failed, scan tool (MUT-III Sub
Assembly) will not be able to communicate with it.
TROUBLESHOOTING HINTS (THE MOST LIKELY CAUSES FOR THIS CASE:)
Damaged wiring harness or connector Defective battery Charging system failed Malfunction of the hydraulic unit (integrated with ABS-ECU)
DIAGNOSIS
2004 Mitsubishi Endeavor LS
2004 BRAKES Anti-Lock Braking System (ABS) - Endeavor
Page 218 of 3870
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
MB991970: ABS Check Harness
STEP 1. Measure the voltage at ABS-ECU connector A-02.
1. Disconnect the connector A-02, and connect special tool ABS Check
Harness (MB991970) to the wiring harness-side connector.
2. Turn the ignition switch to the "ON" position.
3. Measure the voltage between terminal 20 and ground. It should measure
approximately 12 volts (battery positive voltage). NOTE: Do not connect special tool ABS Check Harness
(MB991970) to the ABS-ECU.
2004 Mitsubishi Endeavor LS
2004 BRAKES Anti-Lock Braking System (ABS) - Endeavor
Page 219 of 3870
Fig. 127: Measuring Voltage At ABS
-ECU Connector A
-02
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
2004 Mitsubishi Endeavor LS
2004 BRAKES Anti-Lock Braking System (ABS) - Endeavor
Page 220 of 3870
Q: Is battery positive voltage (approximately 12 volts) present?
YES: Go to Step 3 .
NO: Go to Step 2.
STEP 2. Check the following connectors.
AB
S-ECU connector A-02
2004 Mitsubishi Endeavor LS
2004 BRAKES Anti-Lock Braking System (ABS) - Endeavor
Page 221 of 3870
Fig. 128: Checking ABS
-ECU Connector A
-02
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
2004 Mitsubishi Endeavor LS
2004 BRAKES Anti-Lock Braking System (ABS) - Endeavor
Page 222 of 3870
Junction block connectors C-214 and C-215
Fig. 129: Checking Junction Block Connectors C
-214 And C
-215
2004 Mitsubishi Endeavor LS
2004 BRAKES Anti-Lock Braking System (ABS) - Endeavor
Page 223 of 3870
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
Joint connector C-04
Fig. 130: Checking Joint Connector C
-04
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Ignition switch connector C-308
2004 Mitsubishi Endeavor LS
2004 BRAKES Anti-Lock Braking System (ABS) - Endeavor
Page 224 of 3870
Fig. 131: Checking Ignition Switch Connector C
-308
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: An open or short circuit may be present in the power supply line to
the ABS-ECU. Repair the wiring harness between ABS-ECU connector
A-02 terminal 20 and ignition switch connector C-308 terminal 4. Then go
to Ste
p 8 .
2004 Mitsubishi Endeavor LS
2004 BRAKES Anti-Lock Braking System (ABS) - Endeavor