DTC P1887 L61
Circuit Description
The torque converter clutch (TCC) pressure release switch is part of the transaxle
fluid pressure (TFP) switch assembly. The FTP switch assembly is mounted to the transaxle
valve body. The TCC pressure release switch is normally closed. The switch signals
the PCM that the TCC is released. This is accomplished by torque converter release
fluid pressure acting on the switch contact, thus opening the switch. When the voltage
is high on the circuit, the PCM recognizes the TCC is no longer engaged. When the
PCM determines the TCC release switch is open, indicating the TCC is not applied,
and the TCC slip speed indicates the TCC is applied, then DTC P1887 sets.
DTC Parameters
DTC P1887 will set if the PCM detects an open in the TCC pressure release (TCC
release fluid present) for 6 seconds twice in one ignition cycle when:
| • | TCC slip speed is -20 to +60 RPM |
| - | MY 2002: 41-407 N·m (30-300 lb ft) |
| - | MY 2003: 41-237 N·m (30-175 lb ft) |
| • | DTC P0716, P0717, P0741, and P0742 have not set |
| • | MY 2003: DTC P1860 has not set |
DTC P1887 diagnostic runs continuously.
DTC P1887 is a type B DTC.
Diagnostic Aids
Inspect the wiring at the PCM, transaxle connector, TFP valve position switch
connector, and all other circuit connecting points for the following conditions:
| • | A broken wire inside the insulation |
When diagnosing for an intermittent short or open condition, massage the wiring
harness while watching the test equipment for a change.
DTC P1887 L81
Circuit Description
The torque converter clutch (TCC) pressure release switch is part of the transaxle
fluid pressure (TFP) switch assembly. The TFP switch assembly is mounted to the transaxle
control valve body. The TCC pressure release switch is normally closed. The switch
signals the TCM that the TCC is released. This is accomplished by torque converter
release fluid pressure acting on the switch contact, thus opening the switch. When
the voltage is high on the circuit, the TCM recognizes the TCC is no longer engaged.
When the TCM determines the TCC release switch is open (indicating the TCC is not
applied) and the TCC slip speed indicates the TCC is applied, then DTC P1887 sets.
DTC Parameters
DTC P1887 will set if the TCM detects an open in the TCC pressure release (TCC
release fluid present) for 6 seconds twice in one ignition cycle when:
| - | MY 2002: 200-7,500 RPM for 5 seconds |
| - | MY 2003: 500-6,500 RPM for 5 seconds |
| - | MY 2002: -20 to +40 RPM |
| - | MY 2003: -20 to +60 RPM |
| • | Transmission fluid temperature is 20-130°C (68-266°F) |
| - | MY 2002: 30-130 N·m (22-96 lb ft) |
| - | MY 2003: 40-130 N·m (30-96 lb ft) |
| • | MY 2002: Ignition 1 is 8-18 volts |
| • | DTC P0716, P0717, P0741, and P0742 have not set |
| • | MY 2003: DTC P1860 has not set |
DTC P1887 diagnostic runs continuously.
DTC P1887 is a type B DTC.
Diagnostic Aids
Inspect the wiring at the TCM, transaxle connector, TFP valve position switch
connector, and all other circuit connecting points for the following conditions:
| • | A broken wire inside the insulation |
When diagnosing for an intermittent short or open condition, massage the wiring
harness while watching the test equipment for a change.
