AUTOMATIC TRANSMISSION
Fault finding - Interpretation of faults
23A
23A - 28V3 MR-372-J84-23A000$405.mif
AJ0 BVA
Vdiag No.: 04, 05AUTOMATIC TRANSMISSION
Fault finding - Interpretation of faults
DF023
PRESENT
OR
STOREDGEARBOX OIL TEMPERATURE SENSOR CIRCUIT
1.DEF: Open circuit or short circuit
NOTESConditions for applying fault finding procedures to stored faults:
The fault is declared present after:
–in the event of open circuit or short circuit+:
–+ after ignition feed,
–oil temperature ≤ - 40 ˚C,
–vehicle speed > 6 mph (10 km/h).
–in the event of short circuit-:
–+ after ignition feed,
–oil temperature > 180 ˚C,
–vehicle speed > 6 mph (10 km/h).
–accelerator pedal > 12.5 % and engine speed > 305 rpm.
(detection time in the event of short circuit- is 10 minutes).
Effect on system:
–in the event of open circuit or short circuit+:
Gear change quality is reduced.
lock-up is inhibited.
–in the event of short circuit-:
The transmission operates as if the temperature had increased.
Customer complaint:
–in the event of open circuit or short circuit+:
If the fault occurs while driving, the transmission engages fixed 5th gear.
Restarting is in 3rd gear.
Gear change quality is reduced.
Fault warning light on
–in the event of short circuit-:
Fault warning light on
Use the Wiring Diagrams Technical Note, SCENIC II ph2.
Check that the coolant temperature (see 13B, Diesel injection, EDC16, CP33 M9R 721 Conformity check)
is ≥ - 40 ˚C (the transmission oil temperature sensor is within its operating range).
If the oil temperature ≤ - 40 ˚C, move on to step 1.
If the oil temperature is ≥ - 40 ˚C, deal with the fault; move on to step 2.
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition, wait 1 minute and carry out a road test followed by another
check with the diagnostic tool.
AJ0_V04_DF023/AJ0_V05_DF023
MR-372-J84-23A000$405.mif
AUTOMATIC TRANSMISSION
Fault finding - Interpretation of faults
23A
23A - 29V3 MR-372-J84-23A000$405.mif
AJ0 BVA
Vdiag No.: 04, 05
DF023
CONTINUED 1
Step 1:
Start the vehicle, check that engine coolant temperature is ≥ 20 ˚C.
If the fault is stored, deal with the other faults displayed on the diagnostic tool. In the absence of faults, end of
fault finding.
If a fault is still present, deal with it, then move on to step 2.
Step 2:
Look for any damage to the harness and check the condition and connection of the automatic transmission
computer and automatic transmission connectors.
If the connection is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Disconnect the connector from component 119, measure the resistance of the oil temperature sensor
(on the connector of component 119) between the following connections:
●Connection code 5BZ,
●Connection code 5BY.
The resistance should be between:
–4.208 ± 0.42 kΩΩ Ω Ω
at 20 ˚C,
–1.947 ± 0.19 kΩΩ Ω Ω
at 40 ˚C,
–0.988 ± 0.09 kΩΩ Ω Ω
at 60 ˚C,
Is the resistance correct?
If YES, contact the Techline.
If NO, move on to step 3.
Stage 3:
Disconnect connector R22 and check continuity and insulation on the following connections:
●Connection code 5BZ,
●Connection code 5BY.
Between components 119 and R22.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Are the continuity and insulation correct?
If YES, move on to step 4.
If NO, replace the external wiring harness on the automatic transmission.
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition, wait 1 minute and carry out a road test followed by another
check with the diagnostic tool.
AUTOMATIC TRANSMISSION
Fault finding - Interpretation of faults
23A
23A - 30V3 MR-372-J84-23A000$405.mif
AJ0 BVA
Vdiag No.: 04, 05
DF023
CONTINUED 2
Stage 4:
Measure the resistance of the oil temperature sensor (on connector R22) between the following connections:
●Connection code 5BZ,
●Connection code 5BY.
The resistance should be between:
–4.208 ± 0.42 kΩΩ Ω Ω
at 20 ˚C,
–1.947 ± 0.19 kΩΩ Ω Ω
at 40 ˚C,
–0.988 ± 0.09 kΩΩ Ω Ω
at 60 ˚C,
Is the resistance correct?
If YES, and if the fault is still present, contact the Techline.
If NO, move on to step 5.
Stage 5:
Drain the automatic transmission (see, MR 370, Mechanical, 23A Automatic transmission, Oil change)
and remove the transmission housing (see, MR 370, Mechanical, 23A Automatic transmission, Hydraulic
distributor).
Measure the resistance of the transmission temperature sensor (on the connector of the internal wiring
harness on the transmission) between the following connections:
●Connection code 5BZ,
●Connection code 5BY.
The resistance should be between:
–4.208 ± 0.42 kΩΩ Ω Ω
at 20 ˚C,
–1.947 ± 0.19 kΩΩ Ω Ω
at 40 ˚C,
–0.988 ± 0.09 kΩΩ Ω Ω
at 60 ˚C,
Is the resistance correct?
If YES, move on to step 6.
If NO, replace the internal wiring harness on the automatic transmission.
Stage 6:
Measure the continuity and insulation of the following connections:
●Connection code 5BZ,
●Connection code 5BY.
Between components R22 and the internal connector in the transmission.
Are the continuity and insulation correct?
If YES, contact the Techline.
If NO, replace the wiring harness between connector R22 and the internal connector in the transmission.
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition, wait 1 minute and carry out a road test followed by another
check with the diagnostic tool.
AUTOMATIC TRANSMISSION
Fault finding - Interpretation of faults
23A
23A - 39V3 MR-372-J84-23A000$405.mif
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Vdiag No.: 04, 05
DF085
CONTINUED 2
Stage 3:
Measure the resistance of sequence solenoid valve 1 (on connector R22) between the following connections:
●Connection code 5CX.
●Connection code 5LW.
The resistance must be 28 ΩΩ Ω Ω
± 2.8 ΩΩ Ω Ω
at 20 ˚C.
Is the resistance correct?
If YES, and if the fault is still present, contact the Techline.
If NO, move on to step 4.
Stage 4:
Drain the automatic transmission (see, MR 370, Mechanical, 23A Automatic transmission, Oil change)
and remove the transmission housing (see, MR 370, Mechanical, 23A Automatic transmission, Hydraulic
distributor).
Disconnect the connector of component 754, measure the resistance of sequence solenoid valve 1
(on the connector of the internal wiring harness of the transmission) between the following connections:
●Connection code 5CX.
●Connection code 5LW.
The resistance must be 28 ΩΩ Ω Ω
± 2.8 ΩΩ Ω Ω
at 20 ˚C.
Is the resistance correct?
If YES, move on to step 5.
If NO, move on to step 6.
Stage 5:
Measure the continuity and insulation of the following connections:
●Connection code 5CX.
●Connection code 5LW.
Between components R22 and the internal connector in the transmission.
Are the continuity and insulation correct?
If YES, contact the Techline.
If NO, replace the intermediate wiring harness between connector R22 and the internal connector in the
transmission.
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition, wait 1 minute and carry out a road test followed by another
check with the diagnostic tool.
AUTOMATIC TRANSMISSION
Fault finding - Interpretation of faults
23A
23A - 43V3 MR-372-J84-23A000$405.mif
AJ0 BVA
Vdiag No.: 04, 05
DF086
CONTINUED 2
Stage 4:
Drain the automatic transmission (see, MR 370, Mechanical, 23A Automatic transmission, Oil change)
and remove the transmission housing (see, MR 370, Mechanical, 23A Automatic transmission, Hydraulic
distributor).
Disconnect the connector from component 754, measure the resistance of sequence solenoid valve 2
(on the connector of the internal wiring harness of the transmission) between the following connections:
●Connection code 5CY.
●Connection code 5LW.
The resistance must be 28 ΩΩ Ω Ω
± 2.8 ΩΩ Ω Ω
at 20 ˚C.
Is the resistance correct?
If YES, move on to step 5.
If NO, move on to step 6.
Stage 5:
Measure the continuity and insulation of the following connections:
●Connection code 5CY.
●Connection code 5LW.
Between components R22 and the internal connector in the transmission.
Are the continuity and insulation correct?
If YES, contact the Techline.
If NO, replace the intermediate wiring harness between connector R22 and the internal connector in the
transmission.
Stage 6:
Disconnect the connector from sequence solenoid valve 2, measure the resistance of sequence solenoid
valve 2 between the following connections:
●Connection code 5CY.
●Connection code 5LW.
The resistance must be 28 ΩΩ Ω Ω
± 2.8 ΩΩ Ω Ω
at 20 ˚C.
Is the resistance correct?
If YES, move on to step 7.
If NO, replace the hydraulic distributor.
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition, wait 1 minute and carry out a road test followed by another
check with the diagnostic tool.
AUTOMATIC TRANSMISSION
Fault finding - Interpretation of faults
23A
23A - 47V3 MR-372-J84-23A000$405.mif
AJ0 BVA
Vdiag No.: 04, 05
DF091
CONTINUED 2
Stage 4:
Drain the automatic transmission (see, MR 370, Mechanical, 23A Automatic transmission, Oil change) and
remove the transmission housing (see, MR 370, Mechanical, 23A Automatic transmission, Hydraulic
distributor).
Disconnect the connector from component 754, measure the resistance of the LS pressure regulation solenoid
valve (on the connector of the internal wiring harness of the transmission) between the following connections:
●Connection code 5BU.
●Connection code 5LW.
The resistance must be 5.3 ΩΩ Ω Ω
± 0.5 ΩΩ Ω Ω
at 20 ˚C.
Is the resistance correct?
If YES, move on to step 5.
If NO, move on to step 6.
Stage 5:
Measure the continuity and insulation of the following connections:
●Connection code 5BU.
●Connection code 5LW.
Between components R22 and the internal connector in the transmission.
Are the continuity and insulation correct?
If YES, contact the Techline.
If NO, replace the intermediate wiring harness between connector R22 and the internal connector in the
transmission.
Stage 6:
Disconnect the connector from resistance of the LS pressure regulation solenoid valve measure the LS
pressure regulation solenoid valve between the following connections:
●Connection code 5BU.
●Connection code 5LW.
The resistance must be 5.3 ΩΩ Ω Ω
± 0.5 ΩΩ Ω Ω
at 20 ˚C.
Is the resistance correct?
If YES, move on to step 7.
If NO, replace the hydraulic distributor.
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition, wait 1 minute and carry out a road test followed by another
check with the diagnostic tool.
AUTOMATIC TRANSMISSION
Fault finding - Interpretation of faults
23A
23A - 51V3 MR-372-J84-23A000$405.mif
AJ0 BVA
Vdiag No.: 04, 05
*EVS2 = sequence solenoid valve 2DF097
PRESENT
OR
STORED
CONVERTER lock-up
1.DEF: CONVERTER LOCK-UP CONTROL
NOTESOrder of priority in the event of more than one fault:
If there is a combination of the following faults:
–DF097 "Converter lock-up",
–DF086 "Sequence solenoid valve circuit "EVS2*""
–DF306 "Lock-up/brake 1 solenoid valve circuit",
deal first with faults DF086 "Sequence solenoid valve "EVS2*"" and DF306 "Lock-
up/brake 1 solenoid valve circuit".
Conditions for applying fault finding procedures to stored faults:
The fault is declared present after:
If in lock-up:
Lever in Manual position,
and difference in *slippage speed ≥ 40 + Vehicle speed / 2 for a certain time,
and EVS2* solenoid valve control status > 95 %.
In the event of slippage:
Lever in Manual position,
and difference in slippage speed ≥ 40 + slippage speed setpoint for a certain time,
and EVS2* solenoid valve control status > 95 %.
*slippage = engine speed - turbine speed
Effect on system:
Increase in oil temperature.
–In the event of engagement fault, lock-up inhibited.
–In the event of slippage fault, lock-up slippage inhibited.
Customer complaint:
Warning light on.
Use the Wiring Diagrams Technical Note, SCENIC II ph2.
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition, wait 1 minute and carry out a road test followed by another
check with the diagnostic tool.
AJ0_V04_DF097/AJ0_V05_DF097
AUTOMATIC TRANSMISSION
Fault finding - Interpretation of faults
23A
23A - 53V3 MR-372-J84-23A000$405.mif
AJ0 BVA
Vdiag No.: 04, 05
DF097
CONTINUED 2
Stage 3:
Measure the resistance of sequence solenoid valve 2 (on connector R22) between the following connections:
●Connection code 5CY.
●Connection code 5LW.
The resistance must be 28 ΩΩ Ω Ω
± 2.8 ΩΩ Ω Ω
at 20 ˚C.
Is the resistance correct?
If YES, and if the fault is still present, contact the Techline.
If NO, move on to step 4.
Stage 4:
Drain the automatic transmission (see, MR 370, Mechanical, 23A Automatic transmission, Oil change) and
remove the transmission housing (see, MR 370, Mechanical, 23A Automatic transmission, Hydraulic
distributor).
Disconnect the connector from component 754, measure the resistance of sequence solenoid valve 2
(on the connector of the internal wiring harness of the transmission) between the following connections:
●Connection code 5CY.
●Connection code 5LW.
The resistance must be 28 ΩΩ Ω Ω
± 2.8 ΩΩ Ω Ω
at 20 ˚C.
Is the resistance correct?
If YES, move on to step 5.
If NO, move on to step 6.
Stage 5:
Measure the continuity and insulation of the following connections:
●Connection code 5CY.
●Connection code 5LW.
Between components R22 and the internal connector in the transmission.
Are the continuity and insulation correct?
If YES, contact the Techline.
If NO, replace the intermediate wiring harness between connector R22 and the internal connector in the
transmission.
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition, wait 1 minute and carry out a road test followed by another
check with the diagnostic tool.