Electrical/Electronic Components Overview
Locations of electrical/electronic components
1. Automatic transmission control module (TCM) -J17-
^ Checked by On Board Diagnostic (OBD)
^ Do not replace until all mechanical, hydraulic and electrical/electronic components have been found and repaired.
^ Location: Refer to Fig. 4
^ Removing and Installing: Refer to Fig. 5
2. Engine control module
^ Location and Removing and Installing: Refer to Fig. 6
3. Data Link Connector (DLC)
^ Location: Refer to Fig. 9
4. Valve body
^ Location: Refer to Fig. 10
^ The solenoid valves -N88-, -N89-, -N90-, -N91-, -N92-, -N93- and -N94 are attached to the valve body.
^ The valves are checked by On Board Diagnostic (OBD)
5. Conductor strip with integrated transmission fluid temperature sender (ATF) -G93-
^ Location: Refer to Fig. 11
^ Removing and Installing: Refer to Fig. 12
^ -G93- is checked by On Board Diagnostic (OBD)
6. Multifunction Transmission Range -F125-
^ Removing and Installing: Refer to Fig. 13
^ Checked by On Board Diagnostic (OBD)
7. Transmission Vehicle Speed Sensor (VSS) -G38-
^ Location and Removing and Installing: Refer to Fig. 14
^ The connector T2 to wiring harness is white
^ Checked by On Board Diagnostic (OBD)
8. Vehicle Speed Sensor (VSS) -G68-
^ Location and Removing and Installing: Refer to Fig. 15
^ The connector T2 to wiring harness is black
^ Checked by On Board Diagnostic (OBD)
Do not interchange connector T2 for sensors -G38- and-G68-
9. Throttle position (TP) sensor -G69-, or throttle position (TP) sensor -G79-
^ Further information; Refer to Fig. 16
^ Can be checked in On Board Diagnostic (OBD) (signal) and during the electrical check
10. Shift Lock Solenoid -N110-
^ Location: Refer to Fig. 17
^ Removing and installing: Refer to Shift Lever, A/T / Selector Lever, Disassembling and Assembling
^ Can be checked in measured value block and during the electrical check
11. Cruise control switch -E45-
^ Location and Removing and Installing: Refer to Fig. 18
^ Can be checked in measured value block
12. Kick down switch -F8
^ Location for vehicles with accelerator cable: Refer to Fig. 19
^ Location for vehicles with EPC: Refer to Fig. 20
^ Can be checked in measured value block and during the electrical check
13. Brake light switch -F-
^ Location and Removing and Installing: Refer to Fig. 21
^ Can be checked in measured value block and during the electrical check
14. Park/Neutral Position (PNP) Relay -226
^ Location: Refer to Fig. 22
15. Transmission Range (TR) Selector Lever Display -Y5-
^ Location: The selector lever position display is located in the instrument cluster.
16. Throttle Position (TP) Sensor -G69- (for naturally aspirated diesel engine)
^ Further Information: Refer to Fig. 24
^ Can be checked in measured value block
^ Perform electrical check including wiring to automatic transmission control module
17. Engine Speed (RPM) Sensor -G28- (for naturally aspirated diesel engine)
^ Location: Refer to Fig. 25
^ Checked by On Board Diagnostic (OBD)
Fig. 4 - Location of automatic transmission control module (TCM) -J217-
^ The control module is located in the left footwell, on the "A" pillar.
^ If the engine or transmission control module is replaced, the system must be reset.
Fig. 5 - Removing and installing automatic transmission control module (TCM) -217
^ Remove relay plate cover and unhook relay plate.
^ Switch ignition off, release multi-pin connector in direction of arrow and pull out of control module.
^ Remove control module.
Installation is performed in the reverse order.
Fig. 6 - Engine control module
Removing and installing control module
^ Gasoline engine
^ If the engine or transmission control module is replaced, the system must be reset.
^ Refer to: 4 Spd.Automatic Transmission 01P On Board Diagnostic (OBD); Performing On Board Diagnostic (OBD); Initiating basic setting
Fig. 9 - Data Link Connector (DLC) on vehicles from 09.98
^ Location: The Data Link Connector (DLC) can be found behind the cover in the lower steering column trim.
Fig. 10 - Valve body
^ Location: The valve body is bolted to the underside of transmission housing inside the sump.
^ The solenoid valves -N88-, -N89-, -N90-, -N91-, -N92-, -N93- and -N94 are attached to the valve body.
Fig. 11 - Conductor strip with integrated transmission fluid temperature sensor -G93-
^ Location: The conductor strip is installed below the valve body and is covered by the oil sump.
^ The conductor strip can be changed with transmission installed without removing the valve body.
^ Do not kink or damage the conductor strip.
Fig. 12 - Removing and installing conductor strip
^ Separate cable input connector at transmission and remove retaining clip.
^ Drain ATF, remove oil pan and then remove cable guide -1-.
^ Pry conductor strip off solenoid valve in direction of arrow with special tool 3373.
Note: If the locating points are damaged the valve body must be exchanged.
^ Installation is performed in the reverse order.
Fig. 13 - Multi-Function transmission range (TR) switch -F125-
^ Location: The multi-function switch is located on transmission lower section.
Removing and installing multi-function switch
^ Pull connector off multi-function switch.
^ Remove bolt and retainer.
^ Place drip tray under the transmission.
^ Remove multi-function switch.
^ Always replace O-ring.
Installation is performed in the reverse order.
^ Tighten bolt to - 10 Nm -
^ Check ATF level and top off.
Fig. 14 - Transmission vehicle speed sensor (VSS) -G38-
^ Location: The transmission speed sensor is located on top of transmission.
Removing and installing transmission speed sensor
^ Pull white connector off sensor.
^ Remove bolt and pull sensor out.
^ Always replace O-ring.
Installation is performed in the reverse order.
^ Tighten bolt to tightening torque - 10 Nm -
Fig. 15 - Vehicle speed sensor (VSS) -G68-
^ Location: The vehicle speed sensor is located on front of transmission.
Removing and installing vehicle speed sensor
^ Pull black connector off sensor.
^ Remove bolt and pull sender out.
^ Always replace O-ring.
Installation is performed in the reverse order.
^ Tighten bolt to tightening torque - 10 Nm
Fig. 16 - Throttle Position(TP) sensor -G69- or throttle position (TP) sensor -G79-
^ The automatic transmission control module (TOM) -J217- requires a "throttle valve or accelerator position signal" for the speed required by the driver.
^ This signal is sent from the relevant potentiometer that normally belongs to the engine management system.
^ The signal is transmitted on vehicles without data bus via wiring. On vehicles with data bus, the signal comes from the data bus.
^ The signal can only be read-out in measured value block.
^ Refer to: 4 Spd. Automatic Transmission 01P On Board Diagnostic (OBD), Performing On Board Diagnostic (OBD); Read Measuring Value Block
^ Locations: The potentiometer is part of the throttle valve control module -J338-. It is located on the throttle valve housing/intake manifold.
^ The throttle position (TP) sensor -G79- -arrow- is part of the electronic power control (EPC) and is located on the pedal.
For On Board Diagnostic (OBD):
^ The signal can only be read in the measured value block. The wire (on vehicles without data bus) is checked during the electrical check.
^ If the throttle valve potentiometer or throttle position (TP) sensor are displayed as faulty, in addition the engine control module On Board Diagnostic (OBD) must always be performed.
^ The automatic transmission control module (TCM) -J217- must be brought to its basic setting after any of the following has been carried out:
^ Replacing of throttle valve control module,
^ Adjustment or replacement of throttle position (TP) sensor -G69-,
^ Replacing of throttle position (TP) sensor -G79-,
^ Open circuit in power supply.
Fig. 17 - Shift Lock Solenoid -N110-
^ Location: The shift lock solenoid is located on selector lever (arrow).
^ Removing and installing selector lever lock solenoid: Refer to Shift Lever, A/T / Selector Lever, Disassembling and Assembling
Fig. 18 - Cruise control system switch -E45
^ Location: The cruise control switch is located on the left-hand steering column switch.
Fig. 19 - Kick down switch -F8- on vehicles with accelerator cable
^ Location: Kick down switch (arrow) is integrated into accelerator cable and is located on bulkhead in engine compartment.
For On Board Diagnostic (OBD):
^ The kick down switch signal is transmitted from the engine control module to the automatic transmission control module.
^ Removing and installing kick down switch
^ First remove the accelerator cable. Remove and install the kick down switch. Then reinstall cable and adjust.
Note: The point at which the kick down switch operates must be clearly noticeable before the full throttle limit stop is reached.
Fig. 20 - Kick down switch -F8- for vehicles with EPC
^ Location: The kick down switch is integrated into accelerator pedal position sender (arrow), which is located near the accelerator pedal.
For On Board Diagnostic (OBD):
^ On vehicles without Data bus the signal is received via a wire from the engine control module.
^ On vehicles with data bus, the automatic transmission control module receives the kick-down signal from the data bus.
Fig. 21 - Brake light switch -F-
^ Location: Brake light switch (arrow) is located on pedal cluster.
Fig.22 - Park/Neutral Position (PNP) Relay -J226-
^ Location: Relay located on additional relay carrier behind instrument panel, center.
^ The relay can be marked with number "150" or "175" (arrow).
Fig. 24 - Throttle position (TP) sensor -G69- (for naturally aspirated diesel engine)
^ Location: The throttle position (TP) sensor can be found near the injection pump control lever.
Adjusting:
^ Set throttle position (TP) sensor to specified voltage display by turning against injection pump control lever (Refer to Measured value, block).
Checking:
^ Perform electrical check.
The basic setting of the automatic transmission control module (TCM) -J217- must be adapted to the throttle position (TP) sensor -G69- after any of the following has been carried out:
^ Engine replacement
^ Replacement or adjustment of throttle position (TP) sensor
^ Replacement of diesel engine injection pump
^ Modifications to control lever, adjustments to residual pressure or top speed adjustment screw
^ Replacement of automatic transmission control module
Fig. 25 - Engine speed (RPM) sensor -G28- (for naturally aspirated diesel engine)
^ Location: The engine speed sensor is located on top of transmission.
Removing and Installing engine speed sensor
^ - Pull connector off sensor
^ - Remove bolt and pull sensor out.
^ - Always replace O-ring.
Installation is performed in the reverse order.
^ - Tighten bolt to 10 Nm.