2006 MERCEDES-BENZ SPRINTER Service Manual

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Page 2257 of 2305

MERCEDES-BENZ SPRINTER 2006 Service Manual 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 serv

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 Turn the ignition off to the lock position.
Disconnect the TCM C2 harness connector.
Disconnect the Transmission Solenoid harness connector.
NOTE: Check connectors - Clean/repair as necessary.
Measure the resistance of the Sensor Supply Voltage circuit between the TCM
connector and the Transmission Solenoid Assembly connector
Is the resistance above 5.0 ohms?All
Ye s!Repair the Sensor Supply Voltage circuit for an open.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.
No!Go To 3
3 With the DRBIIIt, read DTCs.
NOTE: The vehicle must be driven to at least 32 Km/h (20 MPH) for this DTC
to be displayed as active.
Is the Warm up counter displayed and equal to 0?All
Ye s!Go To 4
No!Go To 12
4 Turn the ignition switch to the lock position
Disconnect the TCM C2 harness connector.
Disconnect the Transmission Solenoid Assembly harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the N3 Input Speed Sensor Signal circuit from the TCM
connector to the Transmission Solenoid Assembly connector.
Is the resistance above 5.0 ohms?All
Ye s!Repair the N3 Input Speed Sensor Signal circuit for an open.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.
No!Go To 5
92
TRANSMISSION - NAG1
N3 INPUT SPEED SENSOR CIRCUIT ÐContinued

Page 2258 of 2305

MERCEDES-BENZ SPRINTER 2006 Service Manual TEST ACTION APPLICABILITY
5 Turn the ignition off to the lock position.
Disconnect the TCM C2 harness connector.
Disconnect the Transmission Solenoid Assembly harness connector.
Note: Check connectors

TEST ACTION APPLICABILITY
5 Turn the ignition off to the lock position.
Disconnect the TCM C2 harness connector.
Disconnect the Transmission Solenoid Assembly harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the Sensor Ground circuit from the TCM C2 harness
connector to the Transmission Solenoid Assembly harness connector.
Is the resistance above 5.0 ohms?All
Ye s!Repair the Sensor Ground circuit for an open.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.
No!Go To 6
6 Turn the ignition off to the lock position.
Disconnect the TCM C2 harness connector.
Disconnect the Transmission Solenoid Assembly harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the N3 Speed Sensor Signal circuit to all other circuits in
the Transmission Solenoid harness connector.
Is the resistance below 5.0 ohms between any other circuit?All
Ye s!Repair the N3 Speed Sensor Signal circuit for a short to other
circuit-s.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.
No!Go To 7
7 Turn the ignition off to the lock position.
Disconnect the TCM C2 harness connector.
Disconnect the Transmission Solenoid Assembly harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance between ground and the N3 Input Speed Sensor Signal
circuit.
Is the resistance Below 5.0 ohms?All
Ye s!Repair the N3 Input Speed Sensor Signal circuit for a short to
ground.
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.
Disconnect the Transmission Solenoid Assembly harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the Sensor Ground circuit to all other circuits in the
Transmission Solenoid harness connector.
Is the resistance below 5.0 ohms between any other circuit?All
Ye s!Repair the Sensor Ground circuit for a short to other circuits.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.
No!Go To 9
93
TRANSMISSION - NAG1
N3 INPUT SPEED SENSOR CIRCUIT ÐContinued

Page 2259 of 2305

MERCEDES-BENZ SPRINTER 2006 Service Manual TEST ACTION APPLICABILITY
9 Turn the ignition off to the lock position.
Disconnect the TCM C2 harness connectors.
Disconnect the Transmission Solenoid Assembly harness connector.
Note: Check connector

Page 2260 of 2305

MERCEDES-BENZ SPRINTER 2006 Service Manual Symptom:
SENSOR SUPPLY VOLTAGE
When Monitored and Set Condition:
SENSOR SUPPLY VOLTAGE
When Monitored: Always monitored with system active at each ignition cycle and no
under-voltage condition exists.

Page 2261 of 2305

MERCEDES-BENZ SPRINTER 2006 Service Manual TEST ACTION APPLICABILITY
3 Turn the ignition off to the lock position.
Disconnect the Transmission Solenoid Assembly harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the

Page 2262 of 2305

MERCEDES-BENZ SPRINTER 2006 Service Manual Symptom:
SHIFT LEVER POSITION INVALID
POSSIBLE CAUSES
CAN BUS CIRCUIT DTC PRESENT
SHIFT LEVER DTCS PRESENT
OPEN CAN BUS CIRCUITS AT SHIFT LEVER
SHIFT LEVER ASSEMBLY
TEST ACTION APPLICABILITY
1NOTE: Lo

Page 2263 of 2305

MERCEDES-BENZ SPRINTER 2006 Service Manual TEST ACTION APPLICABILITY
4 Turn the ignition off to the lock position.
Disconnect the Shift Lever harness connector.
Measure the resistance between the CAN C Bus (+) circuit and the CAN C Bus (-)
cir

Page 2264 of 2305

MERCEDES-BENZ SPRINTER 2006 Service Manual Symptom:
SHIFT PRESSURE SOLENOID CIRCUIT
When Monitored and Set Condition:
SHIFT PRESSURE SOLENOID CIRCUIT
When Monitored: When the solenoid is off, solenoid active with 25-75% duty cycle and/or
the s

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