CAUTION! Injury hazard from pinching and crushing, in extreme cases extremities can even be severed when caught in the mechanism. Do not allow any body parts to be in the general area of the moving components.

Preparation for Test: 1. Review 12, 20, 21, 31, 2. Check fuses, ok, 3. Ignition ON. 4. Connect the Hand-Held Tester (HHT) to X11/4, according to diagram, see section 0. 5. Voltage supply for the control module and CAN wiring ok, refer to DM, Body and Accessories, Volume 2, section 7.1, >23 6. All CAN wiring must be contacted. The diagnostic trouble codes (DTC's) can only be read out and erased via the Hand-Held-Tester. The DTC's from one system can be stored in other control modules, therefore the DTC memory from other control modules that are relevant to the system being checked should also be readout. While performing the DTC readout, it is possible that DTCs may appear that are not relevent to the system being checked, meaning that all stored DTCs in that particular control module are being displayed. DTC's which are not relevant to the system being checked may also be stored in the respective system's DTC memory. Note regarding DTC's Current DTC's are highlighted in black on the display. Additional detailed fault information based on fault type is displayed with nearly all DTC's such as: > resistance too great < resistance too low + short circuit to positive (POS) - short circuit to ground (GND) -//- open circuit A single DTC may also have additional information such as a readout of repeated faults. Repeated faults Counting of a faults (e.g.): 4 = intermittant fault (fault occurred 4 times).

Test equipment; See MBUSA Standard Service Equipment Program

Description	Brand, model, etc.
Digital multimeter	Fluke models 23, 77 III, 83, 85, 87

DTC	Possible cause	Test step/Remedy 1)
	Left front ESA control module (N32/1)	N32/1
	Left front ESA control module (N32/1), low voltage	D.M., Body and Accessories, Volume 2.1, section 7.1, >23
	Left front ESA control module (N32/1), excess voltage	D.M., Body and Accessories, Volume 2.1, section 7.1, >23
	Left front seatback release microswitch (S91/3) signal > 25 secs or wiring (Model 208 up to 6/98 only) Left front seatback release microswitch (S91/3) or left front hibernation microswitch (S91/1s2) signal > 25 secs or wiring (Model 208 as of 06/98 only)	23 19.0 23 20.0
	Left front ESA motor group (with memory), fore/aft motor (M27m1) (Hall sensor defective) or wiring	23 2.0
	Left front ESA motor group (with memory), raise/lower motor (M27m3) (Hall sensor defective) or wiring	23 5.0
	Left front ESA motor group (with memory), rear raise/lower motor (M27m2) (Hall sensor defective) or wiring	23 8.0
	Left front ESA motor group (with memory), head restraint raise/lower motor (M27m4) (Hall sensor defective) or wiring	23 14.0
	Left front ESA motor group (with memory), backrest fore/aft motor (M27m5) (Hall sensor defective) or wiring	13 11.0
Model 208	Left front ESA control module (N32/1)	N32/1
	Left front ESA control module (N32/1) does not communicate with front driver-side door control module (N69/1)	D.M., Body and Accessories, Volume 2.1, section 7.1, >23
Model 208	Left front ESA control module (N32/1) does not communicate with electronic ignition lock control module (N73)	D.M., Body and Accessories, Volume 2.1, section 7.1, >23
Model 208	Left front ESA control module (N32/1) does not communicate with PSE control module (A37)	D.M., Body and Accessories, Volume 2.1, section 7.1, >23
Model 208	Left front ESA control module (N32/1) does not communicate with electronic ignition lock control module (N73)	D.M., Body and Accessories, Volume 2.1, section 7.1, >23
	Backrest fore/aft switch (S91/2s5), memory button 3 (S91/2s8) or memory store button switch (S91/2s9) binding or wiring	23 10.0, 17.0
	Front raise lower switch (S91/2s3), headrest raise lower/switch (S91/2s4) or memory button 2 switch (S91/2s7) signal > 25 secs or wiring	23 4.0, 13.0, 17.0
	Rear raise /lowerswitch (S91/2s2), fore/aft switch (S91/2s1) or memory button 1 switch (S91/2s6) signal > 25 secs or wiring	23 1.0, 7.0, 17.0
	Right front seat ESA control module with memory (N32/2)	N32/2
	Right front seat ESA control module with memory (N32/2), low voltage	D.M., Body and Accessories, Volume 2.1, section 7.1, >23
	Right front seat ESA control module with memory (N32/2) excess voltage	D.M., Body and Accessories, Volume 2.1, section 7.1, > 23
Model 208	Right front seatback release microswitch (S92/3) signal > 25 secs or wiring (Model 208 up to 6/98 only) Left front seatback release microswitch (S92/3) or right front hibernation microswitch (S92/1s2) signal > 25 secs or wiring (Model 208 as of 06/98 only)	23 19.0 23 20.0
	Fore/aft motor (M28m1) (Hall sensor defective) or wiring	23 2.0
	Front raise/lower motor (M28m3) (Hall sensor defective) or wiring	23 5.0
	Rear raise/lower motor (M28m2) (Hall sensor defective) or wiring	23 8.0
	Head restraint raise/lower motor (M28m4) (Hall sensor defective) or wiring	13 14.0
	Backrest fore/aft motor (M28m5) (Hall sensor defective) or wiring	13 11.0
Model 208	Right front ESA control module (N32/2)	N32/2
	Right front ESA control module (N32/2) does not communicate with front passenger-side door control module (N69/2)	D.M., Body and Accessories, Volume 2.1, section 7.1, > 23
Model 208	Right front ESA control module (N32/2) does not communicate with electronic ignition lock control module (N73)	D.M., Body and Accessories, Volume 2.1, section 7.1, > 23
Model 208	Right front ESA control module (N32/2) does not communicate with PSE control module (A37)	D.M., Body and Accesssories, Volume 2.1, section 7.1, >23
Model 208	Right front ESA control module (N32/2) does not communicate with electronic ignition lock control module (N73)	D.M., Body and Accessories, Volume 2.1, section 7.1, > 23
	Backrest fore/aft switch (S92/2s5), memory button 3 (S92/2s8) or memory store button switch (S92/2s9) binding or wiring	23 10.0, 17.0
	Front raise lower switch (S92/2s3), headrest raise lower/switch (S92/2s4) or memory button 2 switch (S92/2s7) binding or wiring	23 4.0, 13.0, 17.0
	Rear raise /lowerswitch (S92/2s2), fore/aft switch (S92/2s1) or memory button 1 switch (S92/2s6) binding or wiring	23 1.0, 7.0, 17.0

1) Observe Preparation for Test, see 22.