Pinpoint Test S: The Reversing Lamps Are On Continuously

S1 DETERMINE THE TRANSMISSION TYPE
- Check the vehicle and determine the type of transmission.
- Is the vehicle equipped with a manual transmission?
- Yes : GO to S2.
- No : GO to S3.
S2 CHECK THE REVERSING LAMP SWITCH
- Key in OFF position.
- Disconnect: Reversing Lamp Switch C1407.
- Key in ON position.
- Do the reversing lamps continue to illuminate?
- Yes : REPAIR circuit 15S-LG3 (GN/YE). TEST the system for normal operation.
- No : INSTALL a new reversing lamp switch. REFER to REVERSING LAMP SWITCH . TEST the system for normal operation.
S3 CHECK CIRCUIT 15S-LG9 (GN/BK) FOR A SHORT TO POWER
- Key in OFF position.
- Disconnect: CJB C270d.
- Key in ON position.
- Do the reversing lamps continue to illuminate?
- Yes : REPAIR the circuit. TEST system for normal operation.
- No : GO to S4.
S4 CHECK THE PCM TRANSMISSION PIDS
- Connect the diagnostic tool.
- Enter the following diagnostic mode on the diagnostic tool: PCM PID.
- Monitor the PCM transmission range PID while moving the transmission shift lever through all the transmission ranges.
- Do the transmission ranges agree with the PIDs?
- Yes : REPAIR or INSTALL a new CJB. TEST the system for normal operation.
- No : REFER to AUTOMATIC TRANSAXLE/TRANSMISSION to continue diagnosis of the transmission.