brake sensor MERCEDES-BENZ SPRINTER 2006 Service Manual

TEST ACTION APPLICABILITY
3 Ignition on, engine not running.
With the DRBIIIt, read ABS DTCs.
Are there any ABS DTCs present?All
Ye s!Refer to the BRAKE category and perform the appropriate
symptom.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.
No!Go To 4
4 Turn the ignition off to the lock position.
Replace the ABS Control Module per the Service Information.
With the DRBIIIt, erase Transmission DTCs.
Road test the Vehicle.
With the DRBIIIt, read Transmission DTCs.
Does the DTC, ABS LR SENSOR MESSAGE, reset?All
Ye s!Replace the Transmission Control Module.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.
No!Test complete.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.
41
TRANSMISSION - NAG1
ABS LR SENSOR MESSAGE ÐContinued

TEST ACTION APPLICABILITY
3 Ignition on, engine not running.
With the DRBIIIt, read ABS DTCs.
Are there any ABS DTCs present?All
Ye s!Refer to the BRAKE category and perform the appropriate
symptom.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.
No!Go To 4
4 Turn the ignition off to the lock position.
Replace the ABS Control Module per the Service Information.
With the DRBIIIt, erase Transmission DTCs.
Road test the Vehicle.
With the DRBIIIt, read Transmission DTCs.
Does the DTC, ABS RF SENSOR MESSAGE, reset?All
Ye s!Replace the Transmission Control Module.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.
No!Test complete.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.
43
TRANSMISSION - NAG1
ABS RF SENSOR MESSAGE ÐContinued

TEST ACTION APPLICABILITY
3 Ignition on, engine not running.
With the DRBIIIt, read ABS DTCs.
Are there any ABS DTCs present?All
Ye s!Refer to the BRAKE category and perform the appropriate
symptom.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.
No!Go To 4
4 Turn the ignition off to the lock position.
Replace the ABS Control Module per the Service Information.
With the DRBIIIt, erase Transmission DTCs.
Road test the Vehicle.
With the DRBIIIt, read Transmission DTCs.
Does the DTC, ABS RR SENSOR MESSAGE, reset?All
Ye s!Replace the Transmission Control Module.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.
No!Test complete.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.
45
TRANSMISSION - NAG1
ABS RR SENSOR MESSAGE ÐContinued

TEST ACTION APPLICABILITY
2 Ignition on, engine not running.
With the DRBIIIt, read Transmission DTCs.
NOTE: If the DTC, CAN BUS CIRCUIT is present, perform diagnostics on
that symptom first.
Is the DTC, CAN BUS CIRCUIT, present?All
Ye s!Refer to the Transmission category and perform the appropriate
symptom.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.
No!Go To 3
3 Ignition on, engine not running.
With the DRBIIIt, read Engine DTCs.
Are there any Engine Temperature Sensor DTCs present?All
Ye s!Refer to the Driveability category and perform the appropriate
symptom.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.
No!Go To 4
4 Replace and program the ECM per the Service Information.
With the DRBIIIt, erase Transmission DTCs.
Start the engine.
With the brakes firmly applied, shift the gear selector into drive.
With the DRBIIIt, read Transmission DTCs.
Did the DTC, ENGINE TEMP MESSAGE, reset?All
Ye s!Replace the Transmission Control Module.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.
No!Test complete.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.
65
TRANSMISSION - NAG1
ENGINE TEMP MESSAGE ÐContinued

TEST ACTION APPLICABILITY
2 Ignition on, engine not running.
With the DRBIIIt, erase Transmission DTCs.
Raise the vehicle on the hoist.
Start the engine.
NOTE: This condition indicates a catastrophic transmission failure.
With the DRBIIItin Sensors, monitor the N2 and N3 Speed Sensors.
Firmly apply the brakes and place the gear selector in Drive (D).
Release the brakes and raise the engine RPM to allow the Transmission to upshift to
the 2-3 and 3-4 shift schedule.
CAUTION: BE SURE TO KEEP HANDS AND FEET CLEAR OF ROTATING
WHEELS.
Did either the N2 or N3 Speed Sensors display a RPM above 7700?All
Ye s!Go To 3
No!Go To 5
3 Remove the Transmission Oil Pan and inspect for debris or a plugged Transmission
Oil Filter.
Is there any debris, plugged Transmission Oil Filter, or signs of an Internal
Transmission problem?All
Ye s!Repair Internal Transmission as necessary. Pay particular atten-
tion to the Electrohydraulic Control unit. Refer to the Service
Information for proper repair procedures.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.
No!Go To 4
4 If there are no possible causes remaining, view repair. All
Repair
Replace the Transmission Control Module.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.
5 The conditions necessary to set this DTC are not present at this time.
Using the schematics as a guide, inspect the wiring and connectors specific to this
circuit.
Wiggle the wires while checking for shorts and open circuits.
NOTE: Check for any Technical Service Bulletins that may apply.
Were there any problems found?All
Ye s!Repair as necessary
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.
No!Test Complete.
81
TRANSMISSION - NAG1
INPUT SENSOR OVERSPEED ÐContinued

TEST ACTION APPLICABILITY
7 Turn the ignition off to the lock position.
Disconnect the TCM C1 and C2 harness connector.
Disconnect the Transmission Solenoid Assembly harness connector.
Measure the resistance between the Temp Sensor - P/N Switch circuit and all other
circuits in the TCM C1 and C2 harness connector.
Is the resistance below 5.0 ohms on any circuit?All
Ye s!Repair the Transmission Temp Sensor - P/N Switch circuit for a
short to other circuits.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.
No!Go To 8
8 Turn the ignition off to the lock position.
Disconnect the TCM C2 harness connector.
NOTE: Make sure the Transmission Solenoid Assembly harness connector is
connected or the results of the test will be invalid.
With the brakes firmly applied, place the gear selector in Drive.
Measure the resistance between the Temp Sensor - P/N Switch circuit and the Sensor
Ground circuit in the TCM C2 harness connector.
Is the resistance between 500 and 2500 ohms?All
Ye s!Replace the Transmission Control Module.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.
No!Replace the Temp Sensor - P/N Switch Assembly per the Service
Information.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.
11 9
TRANSMISSION - NAG1
TRANS TEMP SENSOR - P/N SWITCH CIRCUIT ÐContinued

Symptom:
TRANS TEMP SENSOR ERRATIC
When Monitored and Set Condition:
TRANS TEMP SENSOR ERRATIC
When Monitored: When transmission temperature is below 170É C (338É F)
Set Condition: When there is a 10É C (18É F) variation between each transmission
temperature sensor read. If the DTC is reset (after an ignition cycle), the DTC will be set
to Stored (Intermittent) status.
POSSIBLE CAUSES
TRANSMISSION TEMP SENSOR WIRING
TCM - TRANS TEMP SENSOR ERRATIC
TEST ACTION APPLICABILITY
1NOTE: Low fluid level can be the cause of many transmission problems. If
the fluid level is low locate and repair the leak then check and adjust the
fluid level per the service information.
NOTE: Always perform diagnostics with a fully charged battery to avoid
false symptoms.
With the DRBIIIt, read the engine DTCs. Check and repair all engine DTCs prior to
performing transmission symptom diagnostics.
With the DRBIIIt, read and record all Transmission DTCs.
NOTE: Check connectors - Clean/repair as necessary. Poor pin to terminal
connections can set DTCs.
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
Repair as necessary.
Most DTCs set on start up but some must be set by driving the vehicle such that all
diagnostic monitors have run.
Note: Verify flash level of transmission controller. Some problems are
corrected by software upgrades to the transmission controller.
NOTE: Check for any Technical Service Bulletins that may apply.
Perform this procedure prior to Symptom diagnosis.All
Continue
Go To 2
2 Ignition on, engine not running.
With the DRBIIIt, monitor the Transmission Temperature.
With the brakes firmly applied, place the gear selector in Drive.
While monitoring the DRBIIIt, wiggle the wires and connectors from the TCM to the
Transmission Solenoid Assembly.
Did the Transmission Temperature fluctuate while wiggling the wires?All
Ye s!Repair the wiring and/or connectors as necessary.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.
No!Go To 3
120
TRANSMISSION - NAG1

9.0 CONNECTOR PINOUTS
ELECTROHYDRAULIC CONTROL UNIT - BLACKCAV CIRCUIT FUNCTION
1 20BL/DG N3 INPUT SPEED SENSOR
2 16BR/GY MODULATION PRESSURE SOLENOID CONTROL
3 20BL/GY N2 INPUT SPEED SENSOR
4 20GY/BL TEMPERATURE SENSOR-P/N SWITCH
5- -
6 16BK SOLENOID SUPPLY VOLTAGE
7 20BK/BL SENSOR SUPPLY VOLTAGE
8 16WT/BL 2-3 SOLENOID CONTROL
9 16YL 3-4 SOLENOID CONTROL
10 16BK/RD SHIFT PRESSURE SOLENOID CONTROL
11 16YL/BL TCC SOLENOID CONTROL
12 20PK SENSOR GROUND
13 16WT 1-2/4-5 SOLENOID CONTROL
SHIFTER ASSEMBLY - BLACKCAV CIRCUIT FUNCTION
1- -
2 20GY/DG/RD LAMP DRIVER
3 20BL/DG K-ABS/SHIFTER ASSEMBLY
4 18BR GROUND
5 20BK/BL/RD BRAKE LAMP SWITCH
6 20DG/WT CAN C BUS (+)
7 20DG CAN C BUS (-)
8 18BK/DG TRANSMISSION RELAY OUTPUT
9 16WT/BL/RD FUSED IGNITION SWITCH OUTPUT (RUN-START)
10 16WT/RD BACK-UP LAMP
TRANSMISSION CONTROL MODULE C1 - BLACKCAV CIRCUIT FUNCTION
1 20BL K-TCM/RADIO
2- -
3- -
4- -
5- -
6- -
7- -
8- -
9- -
10 - -
23 - -
24 - -
25 - -
26 - -
27 - -
28 - -
29 16BK/DG TRANSMISSION RELAY OUTPUT
30 18BR GROUND
C
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N
N
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C
T
O
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P
I
N
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131
CONNECTOR PINOUTS