Acura RL. Instruction — page 35

ENABLE CONDITIONS

Malfunction Threshold

The diagnosis signal is low for at least 2 seconds.

Diagnosis Details

Conditions for illuminating the MIL

When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the
PCM memory.

Conditions for clearing the MIL

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the
diagnostic runs.

The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by
disconnecting the battery.

DTC P0630 (139): ADVANCED DIAGNOSTICS

DTC P0630: VIN NOT PROGRAMMED OR MISMATCH

Fig. 99: Vehicle Identification Number Output Program

General Description

The powertrain control module (PCM) stores a vehicle identification number (VIN) in the keep-alive
memory and outputs the VIN according to the command from the scan tool.

The VIN for each vehicle is registered to the PCM using the scan tool. The registered VIN is read by the
CPU from the keep alive memory after the ignition is turned on or after the Clear command is executed.

If the VIN is not registered in the keep-alive memory when the ignition is turned on or when the Clear

Condition

State of the engine

Running

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command is executed, it is detected as a VIN unregistered condition and a DTC is stored.

Monitor Execution, Sequence, Duration, DTC Type, OBD Status

MONITOR DESCRIPTION CHART

Enable Conditions

ENABLE CONDITIONS

Malfunction Threshold

The VIN is not registered in the keep-alive memory in the PCM.

Diagnosis Details

Conditions for illuminating the MIL

When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the
PCM memory.

Conditions for clearing the MIL

When the VIN registration is completed, the MIL is cleared.

DTC P0685 (135): ADVANCED DIAGNOSTICS

DTC P0685: POWERTRAIN CONTROL MODULE (PCM) POWER CONTROL CIRCUIT
MALFUNCTION (POWER CONTROL CIRCUIT)

Execution

Continuous

Sequence

None

Duration

1 second or less

DTC Type

One drive cycle, MIL ON

OBD Status

N/A

Condition

Ignition switch

ON

No active DTCs

P0603

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Fig. 100: Powertrain Control Module Power Control Circuit Diagram

General Description

After the ignition switch is turned off, the powertrain control module (PCM) does not shut down
immediately. After finishing a predetermined process according to the request of each device and system,
the power supply is automatically disconnected (self shut-down function). The PCM power is disconnected
by controlling PGM-FI main relay 1 (FI MAIN).

During a normal PCM shut down, the shut down process is executed by the CPU, PGM-FI main relay 1 (FI
MAIN) is turned off, and the voltage to the PCM is turned off to shut down the PCM. When the voltage to
the PCM is turned off and the PCM shuts down without the normal shut down procedure, a malfunction in
the PGM-FI main relay 1 (FI MAIN) control circuit is detected and a DTC is stored.

Monitor Execution, Sequence, Duration, DTC Type, OBD Status

MONITOR DESCRIPTION CHART

Enable Conditions

ENABLE CONDITIONS

Execution

Continuous

Sequence

None

Duration

1 second or less

DTC Type

Two drive cycles, MIL ON

OBD Status

N/A

Condition

Minimum

Maximum

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Page 139 © 2005 Mitchell Repair Information Company, LLC.

Malfunction Threshold

The PCM is shut down without the normal shut down procedure.

Diagnosis Details

Conditions for illuminating the MIL

When a malfunction is detected during the first drive cycle, a Temporary DTC is stored in the PCM
memory. If the malfunction recurs during the next (second) drive cycle, the MIL comes on and the DTC and
the freeze frame data are stored.

Conditions for clearing the MIL

The MIL will be cleared if the malfunction does not recur during three consecutive drive cycles in which the
engine conditions are similar to the first time the malfunction was detected.

The MIL, the DTC, the Temporary DTC, and the freeze frame data can be cleared by using the scan tool
Clear command or by disconnecting the battery.

DTC P0705 (5): ADVANCED DIAGNOSTICS

DTC P0705: SHORT IN TRANSMISSION RANGE SWITCH CIRCUIT (MULTIPLE SHIFT-
POSITION INPUT)

Fig. 101: Transmission Range Switch Circuit Diagram

TRANSMISSION RANGE SWITCH CONTACT POINT INPUT MATRIX

Engine speed

400 rpm

Shift lever position

Input per switch

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics — RL

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Friday, June 05, 2009 2:32:04 PM

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