MPH), the transmission will immediately
substitute second gear for the current gear. If
the gear ratio problem goes away, normal
operation will resume. If three gear ratio
problems are identified in a given key start,
the transmission will go into Limp-in mode.
Possible causes:
Code P0736(50) - Excludes geartrain failures
which should be obvious upon disassembly
> If code P0944(35) is also set, follow diagnostic
procedure for code P0944(35) first
> Valve body - #1 ball check or LR switch valve
sticking - may also set code P0731(51)
> Speed sensor or associated wiring - may also set
codes P0731(51), P0715(56), or P0720(57)
> Failed or slipping LR clutch - may also set code
P0731(51)
– LR seal leakage (Intermittent no drive or
reverse)
– Sticky LR accumulator seals (Intermittent no
drive or reverse)
> Failed reverse clutch (hard code)
– OD/Rev lip seal leakage
– Worn reaction shaft support seal rings
– Snap ring out of position
Code P0731(51) - Excludes geartrain failures
which should be obvious upon disassembly
> If code P0944(35) is also set, follow diagnostic
procedure for code P0944(35) first
> Valve body - #1 ball check or LR switch valve
sticking - may also set code P-0736(56) or have
no Reverse
> Speed sensor or associated wiring - may also set
codes P0736(50), P0715(56), or P0720(57)
> Failed or intermittent slipping UD clutch - may
also set P0732(52), or P0733(53)
– UD seal leakage (intermittent)
– Worn input clutch hub bushing (hard code at
heavy throttle)
– Sticky UD accumulator seals (intermittent)
– Worn reaction shaft support seal rings (hard
code at heavy throttle)
– Solenoid pack (UD pressure in 4th gear)
> Failed or slipping LR clutch - may also set code
P0736(56) or have no Reverse
– LR seal leakage (Intermittent)
– Sticky LR accumulator seals (Intermittent)
Code P0732(52) - Excludes geartrain failures
which should be obvious upon disassembly
> If code P0944(35) is also set, follow diagnostic
procedure for code P0944(35) first
> Failed or slipping 2/4 clutch - may also set code
P0734(54)
– 2/4 seat leakage (intermittent)
– Sticky accumulator seals (intermittent)
> Failed or intermittent slipping UD clutch - may
also set code P0731(51) and/or P0733(53)
– UD seal leakage (intermittent)
– Worn input clutch hub bushing (hard code at
heavy throttle)
– Sticky UD accumulator seals (intermittent)
– Worn reaction shaft support seal rings (hard
code at heavy throttle)
– Solenoid pack (UD pressure in 4th gear)
Code P0733(53) - Excludes geartrain failures
which should be obvious upon disassembly
> If code P0944(35) is also set, follow diagnostic
procedure for code P0944(35) first
> Failed or slipping OD clutch - may also set code
P0734(54)
– OD and Reverse inner and outer lip seal
leakage (usually hard code)
– Sticky OD accumulator seals (intermittent)
– Worn reaction shaft support seal rings (hard
code at heavy throttle)
– Broken OD/UD tapered snap ring - (hard code
at heavy throttle)
> Failed or intermittent slipping UD clutch - may
also set code P0731(51) and/or P0732(52)
– UD seal leakage (intermittent)
– Worn input clutch hub bushing (hard code at
heavy throttle)
– Sticky UD accumulator seals (intermittent)
– Worn reaction shaft support seal rings (hard
code at heavy throttle)
– Solenoid pack (UD pressure in 4th gear)
Code P0734(54) - Excludes geartrain failures
which should be obvious upon disassembly
> If code P0944(35) is also set, follow diagnostic
procedure for code P0944(35) first
> Failed or slipping OD clutch - may also set code
P0733(53)
– OD and Reverse inner and outer lip seal
leakage (usually hard code)
– Sticky OD accumulator seals (intermittent)
– Worn reaction shaft support seal rings (hard
code at heavy throttle)
– Broken OD/UD tapered snap ring - (hard code
at heavy throttle)
> Failed or slipping 2/4 clutch - may also set code
P0732(52)
– 2/4 seal leakage (intermittent)
14
GENERAL INFORMATION
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