Troubleshooting Guide — 15 Engine/Stalls on Deceleration
F2-45flowchart15 ENGINE/STALLS ON DECELERATION
DESCRIPTION:
• Engine unexpectedly stops running during or after deceleration
• Idle condition normal
NOTE
[TROUBLESHOOTING HINTS]
Engine speed drops too much when accelerator is released because of a poor connector connection that has been disconnected by the force of deceleration
1. Idle speed misadjustment
2. Fuel cut control malfunction
15 Engine/Stalls on Deceleration
1
STEP 1: Is idle condition normal? Idle speed: 640—700 rpm {670 ± 30} rpm
No
Adjust or perform troubleshooting No. 8—11 "ROUGH IDLE" (page F2-33)
Yes
2
Go to next step
3
STEP 2: Is "00" displayed on SST with ignition switch ON? (page F2-73)
No
Diagnostic trouble code No. displayed — Check for cause (Refer to specified check sequence) (page F2-74)
Yes
4
"00" displayed — Go to next step
5
STEP 3: Does SST Monitor Light show that switches operate correctly with ignition switch ON? (page F2-92)
No
Light not ON or OFF with specified switch — Check for cause (Refer to specified check sequence) (page F2-93)
No
Light always ON — Check wiring between ECM terminal 1D and Self-Diagnosis Checker
Yes
6
Go to next step
7
STEP 4: Are ECM terminal voltages OK (especially 1R, 2B, 3D, 3U, 3V, 3W, 3X, 3Y, and 3Z)? (page F2-141)
No
Check for cause (page F2-141)
Yes
8
Go to next step
9
STEP 5: Check for poor connection of the following parts: Ignition coil; Ignition control module; Distributor; High-tension lead; Fuel injector; Fuel pump relay; ECM
No
Go to next step
Yes
10
Repair or replace