Page 901 of 3870
Fig. 56: Connecting Special Tool MB991923
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
3. Turn the ignition switch to the "ON" position.
4. Measure the terminal voltage between special tool 18-pin connector
terminal 9 (PCM connector B-18 terminal 9) and ground.
When the brake pedal is depressed, the voltage should measure
battery positive voltage (approximately 12 volts). When the brake pedal is released, the voltage should measure 1 volt
or less.
Fig. 57: Measuring Terminal Voltage
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Auto, Cruise Control System - Endeavor
Page 902 of 3870
5. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage battery positive voltage (approximately 12
volts) when the brake pedal is depressed and 1 volt or less when the brake
pedal is released?
YES : It can be assumed that this malfunction is intermittent. (Refer to
HOW TO COPE WITH INTERMITTENT MALFUNCTIONS
).
Then go to Step 22 .
NO : Replace the PCM. [Refer to POWERTRAIN CONTROL
MODULE (PCM)
]. Then go to Step 22 .
STEP 8. Measure the power supply voltage at stoplight switch connector
C-03 by backprobing.
1. Do not disconnect stoplight switch connector C-03.
2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Auto, Cruise Control System - Endeavor
Page 916 of 3870
Fig. 68: Connecting Special Tool MB991923
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
3. Turn the ignition switch to the "ON" position.
4. Measure the terminal voltage between special tool 23-pin connector
(without red tape) terminal 33 (PCM connector B-19 terminal 33) and
ground.
When the brake pedal is depressed, the voltage should measure
battery positive voltage (approximately 12 volts). When the brake pedal is released, the voltage should measure 1 volt
or less.
2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Auto, Cruise Control System - Endeavor
Page 917 of 3870
Fig. 69: Measuring Terminal Voltage Between Special Tool 23
-
Pin Connector Terminal 33 And Ground
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
5. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage battery positive voltage (approximately 12
volts) when the brake pedal is depressed and 1 volt or less when the brake
pedal is released?
YES : Go to Step 21 .
NO : Go to Step 16.
STEP 16. Check PCM connector B-19 and stoplight switch connector C-03
for loose, corroded or dama
ged terminals, or terminals
pushed back in the
connector.
2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Auto, Cruise Control System - Endeavor
Page 928 of 3870
Fig. 78: Connecting Special Tool MB991923
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
3. Turn the ignition switch to the "ON" position.
4. Measure the terminal voltage between special tool 23-pin connector
(without red tape) terminal 33 (PCM connector B-19 terminal 33) and
ground.
When the brake pedal is depressed, the voltage should measure
battery positive voltage (approximately 12 volts). When the brake pedal is released, the voltage should measure 1 volt
or less.
2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Auto, Cruise Control System - Endeavor
Page 929 of 3870

Fig. 79: Measuring Terminal Voltage
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
5. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage battery positive voltage (approximately 12
volts) when the brake pedal is depressed and 1 volt or less when the brake
pedal is released?
YES : It can be assumed that this malfunction is intermittent. (Refer to
HOW TO COPE WITH INTERMITTENT MALFUNCTIONS
).
Then go to Step 22 .
NO : Replace the PCM. [Refer to POWERTRAIN CONTROL
MODULE (PCM)
]. Then go to Step 22 .
STEP 21. Using scan tool MB991958, read the diagnostic trouble codes.
1. Connect scan tool MB991958 to the data link connector. (Refer to AUTO
-
CRUISE CONTROL SYSTEM DIAGNOSTIC TROUBLESHOOTING STRATEGY
).
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 BODY & ACCESSORIES Auto, Cruise Control System - Endeavor
Page 931 of 3870
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
2. Turn the ignition switch to the "ON" position.
3. Set scan tool MB991958 to read the diagnostic trouble codes.
4. Turn the ignition switch to the "LOCK" (OFF) position.
5. Disconnect scan tool MB991958.
Q: Is DTC 22 set?
YES : Replace the PCM. [Refer to POWERTRAIN CONTROL
MODULE (PCM)
]. Then go to Step 22.
NO : It can be assumed that this malfunction is intermittent. (Refer to
HOW TO COPE WITH INTERMITTENT MALFUNCTIONS
).
Step 22. Using scan tool MB991958, read the diagnostic trouble codes.
1. Connect scan tool MB991958 to the data link connector. (Refer to AUTO
-
CRUISE CONTROL SYSTEM DIAGNOSTIC TROUBLESHOOTING STRATEGY
).
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 BODY & ACCESSORIES Auto, Cruise Control System - Endeavor
Page 933 of 3870

2. Turn the ignition switch to the "ON" position.
3. Set scan tool MB991958 to read the diagnostic trouble codes.
4. Turn the ignition switch to the "LOCK" (OFF) position.
5. Disconnect scan tool MB991958.
Q: Is DTC 22 set?
YES : Replace to Step 1 .
NO : The procedure is complete.
DTC 23: Powertrain Control module (PCM) and Its Related Components DTC SET CONDITIONS This DTC is set when there is a failure in the PCM and its related components. TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
Malfunction of the MFI system. Malfunction of the A/T system. Malfunction of the PCM.
DIAGNOSIS REQUIRED SPECIAL TOOL:
MB991958: Scan Tool (MUT-III sub assembly)
MB991824: V.C.I. MB991827: USB Cable MB991910: Main Harness A
STEP 1. Using scan tool MB991958, read the diagnostic trouble code.
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 BODY & ACCESSORIES Auto, Cruise Control System - Endeavor