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6 CHECK APP SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 73 and APP sensor terminal 5.
Refer to Wiring Diagram
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK © GO TO 8.
NG © GO TO 7.
7 DETECT MALFUNCTIONING PART
Check the following.
I Harness connectors M161, F68
I Harness for open or short between ECM and accelerator pedal position sensor
© Repair open circuit or short to ground or short to power in harness or connectors.
8 CHECK APP SENSOR
Refer to “Component Inspection”, EC-316.
OK or NG
OK © GO TO 9.
NG © Replace accelerator pedal assembly.
9 CHECK INTERMITTENT INCIDENT
Refer to “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-156.
© IINSPECTION END
SEC901C
Component Inspection
NFEC1442
ACCELERATOR PEDAL POSITION SENSOR
1. Reconnect all harness connectors disconnected.
2. Turn ignition switch “ON”.
3. Check voltage between ECM terminals 73 (APP sensor 1
signal), 74 (APP sensor 2 signal) and engine ground under the
following conditions.
Terminal Accelerator pedal Voltage
73
(Accelerator pedal posi-
tion sensor 1)
Fully released 0.41 - 0.71V
Fully depressed More than 3.7V
74
(Accelerator pedal posi-
tion sensor 2)
Fully released 0.08 - 0.48V
Fully depressed More than 1.8V
4. If NG, replace accelerator pedal assembly.
5. Perform “Accelerator Pedal Released Position Learning”,
EC-71.
6. Perform “Throttle Valve Closed Position Learning”, EC-71.
7. Perform “Idle Air Volume Learning”, EC-71.
DTC P0227, P0228 APP SENSOR
Diagnostic Procedure (Cont’d)
EC-316
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